Hi everyone,
I noticed today the following error messages in /var/log/kern.log :
Jun 5 00:26:48 localhost kernel: [ 0.000000] MTRR default type: uncachable
Jun 5 00:26:48 localhost kernel: [ 0.000000] MTRR fixed ranges enabled:
Jun 5 00:26:48 localhost kernel: [ 0.000000] 00000-9FFFF write-back
Jun 5 00:26:48 localhost kernel: [ 0.000000] A0000-BFFFF uncachable
Jun 5 00:26:48 localhost kernel: [ 0.000000] C0000-D3FFF write-protect
Jun 5 00:26:48 localhost kernel: [ 0.000000] D4000-DFFFF uncachable
Jun 5 00:26:48 localhost kernel: [ 0.000000] E0000-E3FFF write-protect
Jun 5 00:26:48 localhost kernel: [ 0.000000] E4000-E7FFF write-through
Jun 5 00:26:48 localhost kernel: [ 0.000000] E8000-EBFFF write-protect
Jun 5 00:26:48 localhost kernel: [ 0.000000] EC000-EFFFF write-through
Jun 5 00:26:48 localhost kernel: [ 0.000000] F0000-FFFFF write-protect
Jun 5 00:26:48 localhost kernel: [ 0.000000] MTRR variable ranges enabled:
Jun 5 00:26:48 localhost kernel: [ 0.000000] 0 base 000000000
mask E00000000 write-back
Jun 5 00:26:48 localhost kernel: [ 0.000000] 1 base 200000000
mask FC0000000 write-back
Jun 5 00:26:48 localhost kernel: [ 0.000000] 2 base 0C0000000
mask FC0000000 uncachable
Jun 5 00:26:48 localhost kernel: [ 0.000000] 3 disabled
Jun 5 00:26:48 localhost kernel: [ 0.000000] 4 disabled
Jun 5 00:26:48 localhost kernel: [ 0.000000] 5 disabled
Jun 5 00:26:48 localhost kernel: [ 0.000000] 6 disabled
Jun 5 00:26:48 localhost kernel: [ 0.000000] 7 disabled
Jun 5 00:26:48 localhost kernel: [ 0.000000] x86 PAT enabled: cpu
0, old 0x7040600070406, new 0x7010600070106
Jun 5 00:26:48 localhost kernel: [ 0.000000] original variable MTRRs
Jun 5 00:26:48 localhost kernel: [ 0.000000] reg 0, base: 0GB,
range: 8GB, type WB
Jun 5 00:26:48 localhost kernel: [ 0.000000] reg 1, base: 8GB,
range: 1GB, type WB
Jun 5 00:26:48 localhost kernel: [ 0.000000] reg 2, base: 3GB,
range: 1GB, type UC
Jun 5 00:26:48 localhost kernel: [ 0.000000] total RAM covered: 8192M
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 64K num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 128K num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 256K num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 512K num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 1M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 2M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 4M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 8M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 16M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 128K num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 256K num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 512K num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 1M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 2M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 4M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 8M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 16M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 256K num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 512K num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 1M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 2M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 4M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 8M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 16M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 512K num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 1M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 2M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 4M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 8M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 16M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 1M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 2M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 4M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 8M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 16M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 2M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 4M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 8M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 16M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 4M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 8M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 16M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
chunk_size: 8M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
chunk_size: 16M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
chunk_size: 16M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:26:48 localhost kernel: [ 0.000000] gran_size: 2G
chunk_size: 2G num_reg: 2 lose cover RAM: 2G
Jun 5 00:26:48 localhost kernel: [ 0.000000] mtrr_cleanup: can not
find optimal value
Jun 5 00:26:48 localhost kernel: [ 0.000000] please specify
mtrr_gran_size/mtrr_chunk_size
when trying to append some commands, e.g.:
enable_mtrr_cleanup mtrr_spare_reg_nr=1 mtrr_gran_size=32M mtrr_chunk_size=128M
or
enable_mtrr_cleanup mtrr_spare_reg_nr=0
it doesn't make any change
this would yield the following result:
Jun 5 00:20:47 localhost kernel: [ 0.000000] MTRR default type: uncachable
Jun 5 00:20:47 localhost kernel: [ 0.000000] MTRR fixed ranges enabled:
Jun 5 00:20:47 localhost kernel: [ 0.000000] 00000-9FFFF write-back
Jun 5 00:20:47 localhost kernel: [ 0.000000] A0000-BFFFF uncachable
Jun 5 00:20:47 localhost kernel: [ 0.000000] C0000-D3FFF write-protect
Jun 5 00:20:47 localhost kernel: [ 0.000000] D4000-DFFFF uncachable
Jun 5 00:20:47 localhost kernel: [ 0.000000] E0000-E3FFF write-protect
Jun 5 00:20:47 localhost kernel: [ 0.000000] E4000-E7FFF write-through
Jun 5 00:20:47 localhost kernel: [ 0.000000] E8000-EBFFF write-protect
Jun 5 00:20:47 localhost kernel: [ 0.000000] EC000-EFFFF write-through
Jun 5 00:20:47 localhost kernel: [ 0.000000] F0000-FFFFF write-protect
Jun 5 00:20:47 localhost kernel: [ 0.000000] MTRR variable ranges enabled:
Jun 5 00:20:47 localhost kernel: [ 0.000000] 0 base 000000000
mask E00000000 write-back
Jun 5 00:20:47 localhost kernel: [ 0.000000] 1 base 200000000
mask FC0000000 write-back
Jun 5 00:20:47 localhost kernel: [ 0.000000] 2 base 0C0000000
mask FC0000000 uncachable
Jun 5 00:20:47 localhost kernel: [ 0.000000] 3 disabled
Jun 5 00:20:47 localhost kernel: [ 0.000000] 4 disabled
Jun 5 00:20:47 localhost kernel: [ 0.000000] 5 disabled
Jun 5 00:20:47 localhost kernel: [ 0.000000] 6 disabled
Jun 5 00:20:47 localhost kernel: [ 0.000000] 7 disabled
Jun 5 00:20:47 localhost kernel: [ 0.000000] x86 PAT enabled: cpu
0, old 0x7040600070406, new 0x7010600070106
Jun 5 00:20:47 localhost kernel: [ 0.000000] original variable MTRRs
Jun 5 00:20:47 localhost kernel: [ 0.000000] reg 0, base: 0GB,
range: 8GB, type WB
Jun 5 00:20:47 localhost kernel: [ 0.000000] reg 1, base: 8GB,
range: 1GB, type WB
Jun 5 00:20:47 localhost kernel: [ 0.000000] reg 2, base: 3GB,
range: 1GB, type UC
Jun 5 00:20:47 localhost kernel: [ 0.000000] total RAM covered: 8192M
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] invalid
mtrr_gran_size or mtrr_chunk_size, will find optimal one
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 64K num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 128K num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 256K num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 512K num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 1M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 2M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 4M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 8M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 16M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 128K num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 256K num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 512K num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 1M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 2M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 4M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 8M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 16M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 256K num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 512K num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 1M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 2M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 4M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 8M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 16M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 512K num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 1M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 2M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 4M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 8M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 16M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 1M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 2M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 4M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 8M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 16M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 2M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 4M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 8M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 16M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 4M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 8M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 16M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
chunk_size: 8M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
chunk_size: 16M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
chunk_size: 16M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
chunk_size: 32M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
chunk_size: 64M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
chunk_size: 128M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
chunk_size: 256M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
chunk_size: 512M num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
chunk_size: 1G num_reg: 4 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
chunk_size: 2G num_reg: 5 lose cover RAM: -0G
Jun 5 00:20:47 localhost kernel: [ 0.000000] gran_size: 2G
chunk_size: 2G num_reg: 2 lose cover RAM: 2G
Jun 5 00:20:47 localhost kernel: [ 0.000000] mtrr_cleanup: can not
find optimal value
Jun 5 00:20:47 localhost kernel: [ 0.000000] please specify
mtrr_gran_size/mtrr_chunk_size
Is this some kind of kernel BUG due to the negative value (- 0G) ?
MTRR seems to be a topic that is not widely discussed or thoroughly
understood when using google to find answers.
cat /proc/mtrr
reg00: base=0x000000000 ( 0MB), size= 8192MB, count=1: write-back
reg01: base=0x200000000 ( 8192MB), size= 1024MB, count=1: write-back
reg02: base=0x0c0000000 ( 3072MB), size= 1024MB, count=1: uncachable
Many thanks in advance
Kind Regards
Matt
P.S.: I'm not subscribed to the list so please CC me when needed
Hi,
On 5 June 2013 02:08, Matt <[email protected]> wrote:
> Hi everyone,
>
>
> I noticed today the following error messages in /var/log/kern.log :
>
>
> Jun 5 00:26:48 localhost kernel: [ 0.000000] MTRR default type: uncachable
> Jun 5 00:26:48 localhost kernel: [ 0.000000] MTRR fixed ranges enabled:
> Jun 5 00:26:48 localhost kernel: [ 0.000000] 00000-9FFFF write-back
> Jun 5 00:26:48 localhost kernel: [ 0.000000] A0000-BFFFF uncachable
> Jun 5 00:26:48 localhost kernel: [ 0.000000] C0000-D3FFF write-protect
> Jun 5 00:26:48 localhost kernel: [ 0.000000] D4000-DFFFF uncachable
> Jun 5 00:26:48 localhost kernel: [ 0.000000] E0000-E3FFF write-protect
> Jun 5 00:26:48 localhost kernel: [ 0.000000] E4000-E7FFF write-through
> Jun 5 00:26:48 localhost kernel: [ 0.000000] E8000-EBFFF write-protect
> Jun 5 00:26:48 localhost kernel: [ 0.000000] EC000-EFFFF write-through
> Jun 5 00:26:48 localhost kernel: [ 0.000000] F0000-FFFFF write-protect
> Jun 5 00:26:48 localhost kernel: [ 0.000000] MTRR variable ranges enabled:
> Jun 5 00:26:48 localhost kernel: [ 0.000000] 0 base 000000000
> mask E00000000 write-back
> Jun 5 00:26:48 localhost kernel: [ 0.000000] 1 base 200000000
> mask FC0000000 write-back
> Jun 5 00:26:48 localhost kernel: [ 0.000000] 2 base 0C0000000
> mask FC0000000 uncachable
> Jun 5 00:26:48 localhost kernel: [ 0.000000] 3 disabled
> Jun 5 00:26:48 localhost kernel: [ 0.000000] 4 disabled
> Jun 5 00:26:48 localhost kernel: [ 0.000000] 5 disabled
> Jun 5 00:26:48 localhost kernel: [ 0.000000] 6 disabled
> Jun 5 00:26:48 localhost kernel: [ 0.000000] 7 disabled
> Jun 5 00:26:48 localhost kernel: [ 0.000000] x86 PAT enabled: cpu
> 0, old 0x7040600070406, new 0x7010600070106
> Jun 5 00:26:48 localhost kernel: [ 0.000000] original variable MTRRs
> Jun 5 00:26:48 localhost kernel: [ 0.000000] reg 0, base: 0GB,
> range: 8GB, type WB
> Jun 5 00:26:48 localhost kernel: [ 0.000000] reg 1, base: 8GB,
> range: 1GB, type WB
> Jun 5 00:26:48 localhost kernel: [ 0.000000] reg 2, base: 3GB,
> range: 1GB, type UC
> Jun 5 00:26:48 localhost kernel: [ 0.000000] total RAM covered: 8192M
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 64K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 128K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 128K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] gran_size: 2G
> chunk_size: 2G num_reg: 2 lose cover RAM: 2G
> Jun 5 00:26:48 localhost kernel: [ 0.000000] mtrr_cleanup: can not
> find optimal value
> Jun 5 00:26:48 localhost kernel: [ 0.000000] please specify
> mtrr_gran_size/mtrr_chunk_size
>
>
>
> when trying to append some commands, e.g.:
>
> enable_mtrr_cleanup mtrr_spare_reg_nr=1 mtrr_gran_size=32M mtrr_chunk_size=128M
>
> or
>
> enable_mtrr_cleanup mtrr_spare_reg_nr=0
>
> it doesn't make any change
>
>
> this would yield the following result:
>
>
> Jun 5 00:20:47 localhost kernel: [ 0.000000] MTRR default type: uncachable
> Jun 5 00:20:47 localhost kernel: [ 0.000000] MTRR fixed ranges enabled:
> Jun 5 00:20:47 localhost kernel: [ 0.000000] 00000-9FFFF write-back
> Jun 5 00:20:47 localhost kernel: [ 0.000000] A0000-BFFFF uncachable
> Jun 5 00:20:47 localhost kernel: [ 0.000000] C0000-D3FFF write-protect
> Jun 5 00:20:47 localhost kernel: [ 0.000000] D4000-DFFFF uncachable
> Jun 5 00:20:47 localhost kernel: [ 0.000000] E0000-E3FFF write-protect
> Jun 5 00:20:47 localhost kernel: [ 0.000000] E4000-E7FFF write-through
> Jun 5 00:20:47 localhost kernel: [ 0.000000] E8000-EBFFF write-protect
> Jun 5 00:20:47 localhost kernel: [ 0.000000] EC000-EFFFF write-through
> Jun 5 00:20:47 localhost kernel: [ 0.000000] F0000-FFFFF write-protect
> Jun 5 00:20:47 localhost kernel: [ 0.000000] MTRR variable ranges enabled:
> Jun 5 00:20:47 localhost kernel: [ 0.000000] 0 base 000000000
> mask E00000000 write-back
> Jun 5 00:20:47 localhost kernel: [ 0.000000] 1 base 200000000
> mask FC0000000 write-back
> Jun 5 00:20:47 localhost kernel: [ 0.000000] 2 base 0C0000000
> mask FC0000000 uncachable
> Jun 5 00:20:47 localhost kernel: [ 0.000000] 3 disabled
> Jun 5 00:20:47 localhost kernel: [ 0.000000] 4 disabled
> Jun 5 00:20:47 localhost kernel: [ 0.000000] 5 disabled
> Jun 5 00:20:47 localhost kernel: [ 0.000000] 6 disabled
> Jun 5 00:20:47 localhost kernel: [ 0.000000] 7 disabled
> Jun 5 00:20:47 localhost kernel: [ 0.000000] x86 PAT enabled: cpu
> 0, old 0x7040600070406, new 0x7010600070106
> Jun 5 00:20:47 localhost kernel: [ 0.000000] original variable MTRRs
> Jun 5 00:20:47 localhost kernel: [ 0.000000] reg 0, base: 0GB,
> range: 8GB, type WB
> Jun 5 00:20:47 localhost kernel: [ 0.000000] reg 1, base: 8GB,
> range: 1GB, type WB
> Jun 5 00:20:47 localhost kernel: [ 0.000000] reg 2, base: 3GB,
> range: 1GB, type UC
> Jun 5 00:20:47 localhost kernel: [ 0.000000] total RAM covered: 8192M
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] invalid
> mtrr_gran_size or mtrr_chunk_size, will find optimal one
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 64K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 128K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 128K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] gran_size: 2G
> chunk_size: 2G num_reg: 2 lose cover RAM: 2G
> Jun 5 00:20:47 localhost kernel: [ 0.000000] mtrr_cleanup: can not
> find optimal value
> Jun 5 00:20:47 localhost kernel: [ 0.000000] please specify
> mtrr_gran_size/mtrr_chunk_size
>
>
>
>
>
> Is this some kind of kernel BUG due to the negative value (- 0G) ?
>
> MTRR seems to be a topic that is not widely discussed or thoroughly
> understood when using google to find answers.
>
> cat /proc/mtrr
> reg00: base=0x000000000 ( 0MB), size= 8192MB, count=1: write-back
> reg01: base=0x200000000 ( 8192MB), size= 1024MB, count=1: write-back
> reg02: base=0x0c0000000 ( 3072MB), size= 1024MB, count=1: uncachable
>
I also seems to suffer from the same issue on 3.9.5:
in my situation it looks even weirder:
rathamahata@piledriver ~ $ cat /proc/mtrr
reg00: base=0x000000000 ( 0MB), size= 2048MB, count=1: write-back
reg01: base=0x080000000 ( 2048MB), size= 256MB, count=1: write-back
reg02: base=0x08f800000 ( 2296MB), size= 8MB, count=1: uncachable
reg03: base=0x0b0000000 ( 2816MB), size= 256MB, count=1: write-combining
reg04: base=0x0c0000000 ( 3072MB), size= 256MB, count=1: write-combining
rathamahata@piledriver ~ $ free -m
total used free shared buffers cached
Mem: 7370 745 6624 0 34 241
-/+ buffers/cache: 470 6900
Swap: 3659 0 3659
rathamahata@piledriver ~ $
Hi Sergey,
Hi List, Hi Yinghai Lu,
the following patches
http://marc.info/?l=linux-kernel&m=137080807327118&w=2
http://marc.info/?l=linux-kernel&m=137080805927115&w=2
"fixed" it for me and it works again
meanwhile I also tried out 3.9.5 & 3.8.13 and I got the same "BAD"
result on 3.9.5 whereas with 3.8.13 it worked fine
result of 3.10-rc5 + patches:
[ 0.000000] MTRR default type: uncachable
[ 0.000000] MTRR fixed ranges enabled:
[ 0.000000] 00000-9FFFF write-back
[ 0.000000] A0000-BFFFF uncachable
[ 0.000000] C0000-D3FFF write-protect
[ 0.000000] D4000-DFFFF uncachable
[ 0.000000] E0000-E3FFF write-protect
[ 0.000000] E4000-E7FFF write-through
[ 0.000000] E8000-EBFFF write-protect
[ 0.000000] EC000-EFFFF write-through
[ 0.000000] F0000-FFFFF write-protect
[ 0.000000] MTRR variable ranges enabled:
[ 0.000000] 0 base 000000000 mask E00000000 write-back
[ 0.000000] 1 base 200000000 mask FC0000000 write-back
[ 0.000000] 2 base 0C0000000 mask FC0000000 uncachable
[ 0.000000] 3 disabled
[ 0.000000] 4 disabled
[ 0.000000] 5 disabled
[ 0.000000] 6 disabled
[ 0.000000] 7 disabled
[ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
[ 0.000000] original variable MTRRs
[ 0.000000] reg 0, base: 0GB, range: 8GB, type WB
[ 0.000000] reg 1, base: 8GB, range: 1GB, type WB
[ 0.000000] reg 2, base: 3GB, range: 1GB, type UC
[ 0.000000] total RAM covered: 8192M
[ 0.000000] Found optimal setting for mtrr clean up
[ 0.000000] gran_size: 64K chunk_size: 64K num_reg: 4 lose cover RAM: 0G
[ 0.000000] New variable MTRRs
[ 0.000000] reg 0, base: 0GB, range: 2GB, type WB
[ 0.000000] reg 1, base: 2GB, range: 1GB, type WB
[ 0.000000] reg 2, base: 4GB, range: 4GB, type WB
[ 0.000000] reg 3, base: 8GB, range: 1GB, type WB
cat /proc/mtrr
reg00: base=0x000000000 ( 0MB), size= 2048MB, count=1: write-back
reg01: base=0x080000000 ( 2048MB), size= 1024MB, count=1: write-back
reg02: base=0x100000000 ( 4096MB), size= 4096MB, count=1: write-back
reg03: base=0x200000000 ( 8192MB), size= 1024MB, count=1: write-back
reg04: base=0x0d0000000 ( 3328MB), size= 256MB, count=1: write-combining
which is the same like on 3.8.13
Thanks !
Matt
On Mon, Jun 10, 2013 at 12:01 PM, Sergey Meirovich
<[email protected]> wrote:
> Hi,
>
> On 5 June 2013 02:08, Matt <[email protected]> wrote:
>> Hi everyone,
>>
>>
>> I noticed today the following error messages in /var/log/kern.log :
>>
>>
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] MTRR default type: uncachable
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] MTRR fixed ranges enabled:
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] 00000-9FFFF write-back
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] A0000-BFFFF uncachable
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] C0000-D3FFF write-protect
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] D4000-DFFFF uncachable
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] E0000-E3FFF write-protect
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] E4000-E7FFF write-through
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] E8000-EBFFF write-protect
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] EC000-EFFFF write-through
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] F0000-FFFFF write-protect
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] MTRR variable ranges enabled:
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] 0 base 000000000
>> mask E00000000 write-back
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] 1 base 200000000
>> mask FC0000000 write-back
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] 2 base 0C0000000
>> mask FC0000000 uncachable
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] 3 disabled
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] 4 disabled
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] 5 disabled
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] 6 disabled
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] 7 disabled
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] x86 PAT enabled: cpu
>> 0, old 0x7040600070406, new 0x7010600070106
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] original variable MTRRs
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] reg 0, base: 0GB,
>> range: 8GB, type WB
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] reg 1, base: 8GB,
>> range: 1GB, type WB
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] reg 2, base: 3GB,
>> range: 1GB, type UC
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] total RAM covered: 8192M
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 64K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 128K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 128K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] gran_size: 2G
>> chunk_size: 2G num_reg: 2 lose cover RAM: 2G
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] mtrr_cleanup: can not
>> find optimal value
>> Jun 5 00:26:48 localhost kernel: [ 0.000000] please specify
>> mtrr_gran_size/mtrr_chunk_size
>>
>>
>>
>> when trying to append some commands, e.g.:
>>
>> enable_mtrr_cleanup mtrr_spare_reg_nr=1 mtrr_gran_size=32M mtrr_chunk_size=128M
>>
>> or
>>
>> enable_mtrr_cleanup mtrr_spare_reg_nr=0
>>
>> it doesn't make any change
>>
>>
>> this would yield the following result:
>>
>>
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] MTRR default type: uncachable
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] MTRR fixed ranges enabled:
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] 00000-9FFFF write-back
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] A0000-BFFFF uncachable
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] C0000-D3FFF write-protect
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] D4000-DFFFF uncachable
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] E0000-E3FFF write-protect
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] E4000-E7FFF write-through
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] E8000-EBFFF write-protect
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] EC000-EFFFF write-through
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] F0000-FFFFF write-protect
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] MTRR variable ranges enabled:
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] 0 base 000000000
>> mask E00000000 write-back
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] 1 base 200000000
>> mask FC0000000 write-back
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] 2 base 0C0000000
>> mask FC0000000 uncachable
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] 3 disabled
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] 4 disabled
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] 5 disabled
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] 6 disabled
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] 7 disabled
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] x86 PAT enabled: cpu
>> 0, old 0x7040600070406, new 0x7010600070106
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] original variable MTRRs
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] reg 0, base: 0GB,
>> range: 8GB, type WB
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] reg 1, base: 8GB,
>> range: 1GB, type WB
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] reg 2, base: 3GB,
>> range: 1GB, type UC
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] total RAM covered: 8192M
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] invalid
>> mtrr_gran_size or mtrr_chunk_size, will find optimal one
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 64K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 128K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 128K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] gran_size: 2G
>> chunk_size: 2G num_reg: 2 lose cover RAM: 2G
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] mtrr_cleanup: can not
>> find optimal value
>> Jun 5 00:20:47 localhost kernel: [ 0.000000] please specify
>> mtrr_gran_size/mtrr_chunk_size
>>
>>
>>
>>
>>
>> Is this some kind of kernel BUG due to the negative value (- 0G) ?
>>
>> MTRR seems to be a topic that is not widely discussed or thoroughly
>> understood when using google to find answers.
>>
>> cat /proc/mtrr
>> reg00: base=0x000000000 ( 0MB), size= 8192MB, count=1: write-back
>> reg01: base=0x200000000 ( 8192MB), size= 1024MB, count=1: write-back
>> reg02: base=0x0c0000000 ( 3072MB), size= 1024MB, count=1: uncachable
>>
>
> I also seems to suffer from the same issue on 3.9.5:
> in my situation it looks even weirder:
> rathamahata@piledriver ~ $ cat /proc/mtrr
> reg00: base=0x000000000 ( 0MB), size= 2048MB, count=1: write-back
> reg01: base=0x080000000 ( 2048MB), size= 256MB, count=1: write-back
> reg02: base=0x08f800000 ( 2296MB), size= 8MB, count=1: uncachable
> reg03: base=0x0b0000000 ( 2816MB), size= 256MB, count=1: write-combining
> reg04: base=0x0c0000000 ( 3072MB), size= 256MB, count=1: write-combining
> rathamahata@piledriver ~ $ free -m
> total used free shared buffers cached
> Mem: 7370 745 6624 0 34 241
> -/+ buffers/cache: 470 6900
> Swap: 3659 0 3659
> rathamahata@piledriver ~ $
Hi Matt,
On 10 June 2013 18:41, Matt <[email protected]> wrote:
> Hi Sergey,
>
> Hi List, Hi Yinghai Lu,
>
>
> the following patches
>
> http://marc.info/?l=linux-kernel&m=137080807327118&w=2
> http://marc.info/?l=linux-kernel&m=137080805927115&w=2
>
> "fixed" it for me and it works again
>
> meanwhile I also tried out 3.9.5 & 3.8.13 and I got the same "BAD"
> result on 3.9.5 whereas with 3.8.13 it worked fine
>
>
> result of 3.10-rc5 + patches:
3.10-rc5 with patches has curred error messages in dmesg but MTRRs
still do not cover my entire memory (7748Mb) or anything close to it
("total RAM covered: 2936M").Unfortunately, I don't have anything
other to compare to because this system started straight with 3.9.X
rathamahata@piledriver ~ $ free -m
total used free shared buffers cached
Mem: 7748 1264 6483 0 56 513
-/+ buffers/cache: 695 7053
Swap: 3659 0 3659
rathamahata@piledriver ~ $
...
[ 0.000000] e820: last_pfn = 0x23f000 max_arch_pfn = 0x400000000
[ 0.000000] MTRR default type: uncachable
[ 0.000000] MTRR fixed ranges enabled:
[ 0.000000] 00000-9FFFF write-back
[ 0.000000] A0000-BFFFF write-through
[ 0.000000] C0000-D2FFF write-protect
[ 0.000000] D3000-DFFFF uncachable
[ 0.000000] E0000-FFFFF write-protect
[ 0.000000] MTRR variable ranges enabled:
[ 0.000000] 0 base 000000000000 mask FFFF80000000 write-back
[ 0.000000] 1 base 000080000000 mask FFFFC0000000 write-back
[ 0.000000] 2 base 0000B7800000 mask FFFFFF800000 uncachable
[ 0.000000] 3 base 0000B8000000 mask FFFFF8000000 uncachable
[ 0.000000] 4 disabled
[ 0.000000] 5 disabled
[ 0.000000] 6 disabled
[ 0.000000] 7 disabled
[ 0.000000] TOM2: 000000023f000000 aka 9200M
[ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
[ 0.000000] original variable MTRRs
[ 0.000000] reg 0, base: 0GB, range: 2GB, type WB
[ 0.000000] reg 1, base: 2GB, range: 1GB, type WB
[ 0.000000] reg 2, base: 2936MB, range: 8MB, type UC
[ 0.000000] reg 3, base: 2944MB, range: 128MB, type UC
[ 0.000000] total RAM covered: 2936M
[ 0.000000] Found optimal setting for mtrr clean up
[ 0.000000] gran_size: 64K chunk_size: 256M num_reg: 4
lose cover RAM: 0G
[ 0.000000] New variable MTRRs
[ 0.000000] reg 0, base: 0GB, range: 2GB, type WB
[ 0.000000] reg 1, base: 2GB, range: 1GB, type WB
[ 0.000000] reg 2, base: 2936MB, range: 8MB, type UC
[ 0.000000] reg 3, base: 2944MB, range: 128MB, type UC
[ 0.000000] e820: update [mem 0xb7800000-0xffffffff] usable ==> reserved
[ 0.000000] e820: last_pfn = 0xb7800 max_arch_pfn = 0x400000000
[ 0.000000] Base memory trampoline at [ffff880000099000] 99000 size 24576
[ 0.000000] Using GB pages for direct mapping
[ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff]20:
last_pfn = 0x23f000 max_arch_pfn = 0x400000000
[ 0.000000] MTRR default type: uncachable
[ 0.000000] MTRR fixed ranges enabled:
[ 0.000000] 00000-9FFFF write-back
[ 0.000000] A0000-BFFFF write-through
[ 0.000000] C0000-D2FFF write-protect
[ 0.000000] D3000-DFFFF uncachable
[ 0.000000] E0000-FFFFF write-protect
[ 0.000000] MTRR variable ranges enabled:
[ 0.000000] 0 base 000000000000 mask FFFF80000000 write-back
[ 0.000000] 1 base 000080000000 mask FFFFC0000000 write-back
[ 0.000000] 2 base 0000B7800000 mask FFFFFF800000 uncachable
[ 0.000000] 3 base 0000B8000000 mask FFFFF8000000 uncachable
[ 0.000000] 4 disabled
[ 0.000000] 5 disabled
[ 0.000000] 6 disabled
[ 0.000000] 7 disabled
[ 0.000000] TOM2: 000000023f000000 aka 9200M
[ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
[ 0.000000] original variable MTRRs
[ 0.000000] reg 0, base: 0GB, range: 2GB, type WB
[ 0.000000] reg 1, base: 2GB, range: 1GB, type WB
[ 0.000000] reg 2, base: 2936MB, range: 8MB, type UC
[ 0.000000] reg 3, base: 2944MB, range: 128MB, type UC
[ 0.000000] total RAM covered: 2936M
[ 0.000000] Found optimal setting for mtrr clean up
[ 0.000000] gran_size: 64K chunk_size: 256M num_reg: 4
lose cover RAM: 0G
[ 0.000000] New variable MTRRs
[ 0.000000] reg 0, base: 0GB, range: 2GB, type WB
[ 0.000000] reg 1, base: 2GB, range: 1GB, type WB
[ 0.000000] reg 2, base: 2936MB, range: 8MB, type UC
[ 0.000000] reg 3, base: 2944MB, range: 128MB, type UC
[ 0.000000] e820: update [mem 0xb7800000-0xffffffff] usable ==> reserved
[ 0.000000] e820: last_pfn = 0xb7800 max_arch_pfn = 0x400000000
[ 0.000000] Base memory trampoline at [ffff880000099000] 99000 size 24576
[ 0.000000] Using GB pages for direct mapping
[ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff]
...
>
> [ 0.000000] MTRR default type: uncachable
> [ 0.000000] MTRR fixed ranges enabled:
> [ 0.000000] 00000-9FFFF write-back
> [ 0.000000] A0000-BFFFF uncachable
> [ 0.000000] C0000-D3FFF write-protect
> [ 0.000000] D4000-DFFFF uncachable
> [ 0.000000] E0000-E3FFF write-protect
> [ 0.000000] E4000-E7FFF write-through
> [ 0.000000] E8000-EBFFF write-protect
> [ 0.000000] EC000-EFFFF write-through
> [ 0.000000] F0000-FFFFF write-protect
> [ 0.000000] MTRR variable ranges enabled:
> [ 0.000000] 0 base 000000000 mask E00000000 write-back
> [ 0.000000] 1 base 200000000 mask FC0000000 write-back
> [ 0.000000] 2 base 0C0000000 mask FC0000000 uncachable
> [ 0.000000] 3 disabled
> [ 0.000000] 4 disabled
> [ 0.000000] 5 disabled
> [ 0.000000] 6 disabled
> [ 0.000000] 7 disabled
> [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
> [ 0.000000] original variable MTRRs
> [ 0.000000] reg 0, base: 0GB, range: 8GB, type WB
> [ 0.000000] reg 1, base: 8GB, range: 1GB, type WB
> [ 0.000000] reg 2, base: 3GB, range: 1GB, type UC
> [ 0.000000] total RAM covered: 8192M
> [ 0.000000] Found optimal setting for mtrr clean up
> [ 0.000000] gran_size: 64K chunk_size: 64K num_reg: 4 lose cover RAM: 0G
> [ 0.000000] New variable MTRRs
> [ 0.000000] reg 0, base: 0GB, range: 2GB, type WB
> [ 0.000000] reg 1, base: 2GB, range: 1GB, type WB
> [ 0.000000] reg 2, base: 4GB, range: 4GB, type WB
> [ 0.000000] reg 3, base: 8GB, range: 1GB, type WB
>
> cat /proc/mtrr
> reg00: base=0x000000000 ( 0MB), size= 2048MB, count=1: write-back
> reg01: base=0x080000000 ( 2048MB), size= 1024MB, count=1: write-back
> reg02: base=0x100000000 ( 4096MB), size= 4096MB, count=1: write-back
> reg03: base=0x200000000 ( 8192MB), size= 1024MB, count=1: write-back
> reg04: base=0x0d0000000 ( 3328MB), size= 256MB, count=1: write-combining
>
> which is the same like on 3.8.13
>
>
> Thanks !
>
> Matt
>
> On Mon, Jun 10, 2013 at 12:01 PM, Sergey Meirovich
> <[email protected]> wrote:
>> Hi,
>>
>> On 5 June 2013 02:08, Matt <[email protected]> wrote:
>>> Hi everyone,
>>>
>>>
>>> I noticed today the following error messages in /var/log/kern.log :
>>>
>>>
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] MTRR default type: uncachable
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] MTRR fixed ranges enabled:
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] 00000-9FFFF write-back
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] A0000-BFFFF uncachable
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] C0000-D3FFF write-protect
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] D4000-DFFFF uncachable
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] E0000-E3FFF write-protect
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] E4000-E7FFF write-through
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] E8000-EBFFF write-protect
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] EC000-EFFFF write-through
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] F0000-FFFFF write-protect
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] MTRR variable ranges enabled:
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] 0 base 000000000
>>> mask E00000000 write-back
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] 1 base 200000000
>>> mask FC0000000 write-back
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] 2 base 0C0000000
>>> mask FC0000000 uncachable
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] 3 disabled
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] 4 disabled
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] 5 disabled
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] 6 disabled
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] 7 disabled
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] x86 PAT enabled: cpu
>>> 0, old 0x7040600070406, new 0x7010600070106
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] original variable MTRRs
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] reg 0, base: 0GB,
>>> range: 8GB, type WB
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] reg 1, base: 8GB,
>>> range: 1GB, type WB
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] reg 2, base: 3GB,
>>> range: 1GB, type UC
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] total RAM covered: 8192M
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 64K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 128K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 128K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] gran_size: 2G
>>> chunk_size: 2G num_reg: 2 lose cover RAM: 2G
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] mtrr_cleanup: can not
>>> find optimal value
>>> Jun 5 00:26:48 localhost kernel: [ 0.000000] please specify
>>> mtrr_gran_size/mtrr_chunk_size
>>>
>>>
>>>
>>> when trying to append some commands, e.g.:
>>>
>>> enable_mtrr_cleanup mtrr_spare_reg_nr=1 mtrr_gran_size=32M mtrr_chunk_size=128M
>>>
>>> or
>>>
>>> enable_mtrr_cleanup mtrr_spare_reg_nr=0
>>>
>>> it doesn't make any change
>>>
>>>
>>> this would yield the following result:
>>>
>>>
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] MTRR default type: uncachable
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] MTRR fixed ranges enabled:
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] 00000-9FFFF write-back
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] A0000-BFFFF uncachable
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] C0000-D3FFF write-protect
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] D4000-DFFFF uncachable
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] E0000-E3FFF write-protect
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] E4000-E7FFF write-through
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] E8000-EBFFF write-protect
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] EC000-EFFFF write-through
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] F0000-FFFFF write-protect
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] MTRR variable ranges enabled:
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] 0 base 000000000
>>> mask E00000000 write-back
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] 1 base 200000000
>>> mask FC0000000 write-back
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] 2 base 0C0000000
>>> mask FC0000000 uncachable
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] 3 disabled
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] 4 disabled
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] 5 disabled
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] 6 disabled
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] 7 disabled
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] x86 PAT enabled: cpu
>>> 0, old 0x7040600070406, new 0x7010600070106
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] original variable MTRRs
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] reg 0, base: 0GB,
>>> range: 8GB, type WB
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] reg 1, base: 8GB,
>>> range: 1GB, type WB
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] reg 2, base: 3GB,
>>> range: 1GB, type UC
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] total RAM covered: 8192M
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] invalid
>>> mtrr_gran_size or mtrr_chunk_size, will find optimal one
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 64K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 128K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64K
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 128K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128K
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 256K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256K
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 512K num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512K
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 1M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 2M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 2M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 4M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 4M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>>> chunk_size: 8M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 8M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>>> chunk_size: 16M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 16M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>>> chunk_size: 32M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 32M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>>> chunk_size: 64M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 64M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>>> chunk_size: 128M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 128M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
>>> chunk_size: 256M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 256M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
>>> chunk_size: 512M num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 512M
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
>>> chunk_size: 1G num_reg: 4 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] *BAD*gran_size: 1G
>>> chunk_size: 2G num_reg: 5 lose cover RAM: -0G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] gran_size: 2G
>>> chunk_size: 2G num_reg: 2 lose cover RAM: 2G
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] mtrr_cleanup: can not
>>> find optimal value
>>> Jun 5 00:20:47 localhost kernel: [ 0.000000] please specify
>>> mtrr_gran_size/mtrr_chunk_size
>>>
>>>
>>>
>>>
>>>
>>> Is this some kind of kernel BUG due to the negative value (- 0G) ?
>>>
>>> MTRR seems to be a topic that is not widely discussed or thoroughly
>>> understood when using google to find answers.
>>>
>>> cat /proc/mtrr
>>> reg00: base=0x000000000 ( 0MB), size= 8192MB, count=1: write-back
>>> reg01: base=0x200000000 ( 8192MB), size= 1024MB, count=1: write-back
>>> reg02: base=0x0c0000000 ( 3072MB), size= 1024MB, count=1: uncachable
>>>
>>
>> I also seems to suffer from the same issue on 3.9.5:
>> in my situation it looks even weirder:
>> rathamahata@piledriver ~ $ cat /proc/mtrr
>> reg00: base=0x000000000 ( 0MB), size= 2048MB, count=1: write-back
>> reg01: base=0x080000000 ( 2048MB), size= 256MB, count=1: write-back
>> reg02: base=0x08f800000 ( 2296MB), size= 8MB, count=1: uncachable
>> reg03: base=0x0b0000000 ( 2816MB), size= 256MB, count=1: write-combining
>> reg04: base=0x0c0000000 ( 3072MB), size= 256MB, count=1: write-combining
>> rathamahata@piledriver ~ $ free -m
>> total used free shared buffers cached
>> Mem: 7370 745 6624 0 34 241
>> -/+ buffers/cache: 470 6900
>> Swap: 3659 0 3659
>> rathamahata@piledriver ~ $
On Mon, Jun 10, 2013 at 11:00 AM, Sergey Meirovich
<[email protected]> wrote:
> 3.10-rc5 with patches has curred error messages in dmesg but MTRRs
> still do not cover my entire memory (7748Mb) or anything close to it
> ("total RAM covered: 2936M").Unfortunately, I don't have anything
> other to compare to because this system started straight with 3.9.X
Your system is AMD 64bit, so there is TOM2.
>
> rathamahata@piledriver ~ $ free -m
> total used free shared buffers cached
> Mem: 7748 1264 6483 0 56 513
> -/+ buffers/cache: 695 7053
> Swap: 3659 0 3659
> rathamahata@piledriver ~ $
>
> ...
> [ 0.000000] e820: last_pfn = 0x23f000 max_arch_pfn = 0x400000000
> [ 0.000000] MTRR default type: uncachable
> [ 0.000000] MTRR fixed ranges enabled:
> [ 0.000000] 00000-9FFFF write-back
> [ 0.000000] A0000-BFFFF write-through
> [ 0.000000] C0000-D2FFF write-protect
> [ 0.000000] D3000-DFFFF uncachable
> [ 0.000000] E0000-FFFFF write-protect
> [ 0.000000] MTRR variable ranges enabled:
> [ 0.000000] 0 base 000000000000 mask FFFF80000000 write-back
> [ 0.000000] 1 base 000080000000 mask FFFFC0000000 write-back
> [ 0.000000] 2 base 0000B7800000 mask FFFFFF800000 uncachable
> [ 0.000000] 3 base 0000B8000000 mask FFFFF8000000 uncachable
> [ 0.000000] 4 disabled
> [ 0.000000] 5 disabled
> [ 0.000000] 6 disabled
> [ 0.000000] 7 disabled
> [ 0.000000] TOM2: 000000023f000000 aka 9200M
> [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
> [ 0.000000] original variable MTRRs
> [ 0.000000] reg 0, base: 0GB, range: 2GB, type WB
> [ 0.000000] reg 1, base: 2GB, range: 1GB, type WB
> [ 0.000000] reg 2, base: 2936MB, range: 8MB, type UC
> [ 0.000000] reg 3, base: 2944MB, range: 128MB, type UC
> [ 0.000000] total RAM covered: 2936M
> [ 0.000000] Found optimal setting for mtrr clean up
> [ 0.000000] gran_size: 64K chunk_size: 256M num_reg: 4
> lose cover RAM: 0G
> [ 0.000000] New variable MTRRs
> [ 0.000000] reg 0, base: 0GB, range: 2GB, type WB
> [ 0.000000] reg 1, base: 2GB, range: 1GB, type WB
> [ 0.000000] reg 2, base: 2936MB, range: 8MB, type UC
> [ 0.000000] reg 3, base: 2944MB, range: 128MB, type UC
> [ 0.000000] e820: update [mem 0xb7800000-0xffffffff] usable ==> reserved
> [ 0.000000] e820: last_pfn = 0xb7800 max_arch_pfn = 0x400000000
> [ 0.000000] Base memory trampoline at [ffff880000099000] 99000 size 24576
> [ 0.000000] Using GB pages for direct mapping
> [ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff]20:
> last_pfn = 0x23f000 max_arch_pfn = 0x400000000
> [ 0.000000] MTRR default type: uncachable
> [ 0.000000] MTRR fixed ranges enabled:
> [ 0.000000] 00000-9FFFF write-back
> [ 0.000000] A0000-BFFFF write-through
> [ 0.000000] C0000-D2FFF write-protect
> [ 0.000000] D3000-DFFFF uncachable
> [ 0.000000] E0000-FFFFF write-protect
> [ 0.000000] MTRR variable ranges enabled:
> [ 0.000000] 0 base 000000000000 mask FFFF80000000 write-back
> [ 0.000000] 1 base 000080000000 mask FFFFC0000000 write-back
> [ 0.000000] 2 base 0000B7800000 mask FFFFFF800000 uncachable
> [ 0.000000] 3 base 0000B8000000 mask FFFFF8000000 uncachable
> [ 0.000000] 4 disabled
> [ 0.000000] 5 disabled
> [ 0.000000] 6 disabled
> [ 0.000000] 7 disabled
> [ 0.000000] TOM2: 000000023f000000 aka 9200M
[4G, 9200M) is write-back automatically, there is no need to cover them
again with VAR mtrr.
> [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
> [ 0.000000] original variable MTRRs
> [ 0.000000] reg 0, base: 0GB, range: 2GB, type WB
> [ 0.000000] reg 1, base: 2GB, range: 1GB, type WB
> [ 0.000000] reg 2, base: 2936MB, range: 8MB, type UC
> [ 0.000000] reg 3, base: 2944MB, range: 128MB, type UC
> [ 0.000000] total RAM covered: 2936M
It only count var really.
> [ 0.000000] Found optimal setting for mtrr clean up
> [ 0.000000] gran_size: 64K chunk_size: 256M num_reg: 4
> lose cover RAM: 0G
> [ 0.000000] New variable MTRRs
> [ 0.000000] reg 0, base: 0GB, range: 2GB, type WB
> [ 0.000000] reg 1, base: 2GB, range: 1GB, type WB
> [ 0.000000] reg 2, base: 2936MB, range: 8MB, type UC
> [ 0.000000] reg 3, base: 2944MB, range: 128MB, type UC
> [ 0.000000] e820: update [mem 0xb7800000-0xffffffff] usable ==> reserved
> [ 0.000000] e820: last_pfn = 0xb7800 max_arch_pfn = 0x400000000
> [ 0.000000] Base memory trampoline at [ffff880000099000] 99000 size 24576
> [ 0.000000] Using GB pages for direct mapping
> [ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff]
> ...
so there is no problem with your system...
Thanks
Yinghai
Hi,
On 10 June 2013 21:28, Yinghai Lu <[email protected]> wrote:
> On Mon, Jun 10, 2013 at 11:00 AM, Sergey Meirovich
> <[email protected]> wrote:
>
>> 3.10-rc5 with patches has curred error messages in dmesg but MTRRs
>> still do not cover my entire memory (7748Mb) or anything close to it
>> ("total RAM covered: 2936M").Unfortunately, I don't have anything
>> other to compare to because this system started straight with 3.9.X
>
> Your system is AMD 64bit, so there is TOM2.
>
>>
>> rathamahata@piledriver ~ $ free -m
>> total used free shared buffers cached
>> Mem: 7748 1264 6483 0 56 513
>> -/+ buffers/cache: 695 7053
>> Swap: 3659 0 3659
>> rathamahata@piledriver ~ $
>>
>> ...
>> [ 0.000000] e820: last_pfn = 0x23f000 max_arch_pfn = 0x400000000
>> [ 0.000000] MTRR default type: uncachable
>> [ 0.000000] MTRR fixed ranges enabled:
>> [ 0.000000] 00000-9FFFF write-back
>> [ 0.000000] A0000-BFFFF write-through
>> [ 0.000000] C0000-D2FFF write-protect
>> [ 0.000000] D3000-DFFFF uncachable
>> [ 0.000000] E0000-FFFFF write-protect
>> [ 0.000000] MTRR variable ranges enabled:
>> [ 0.000000] 0 base 000000000000 mask FFFF80000000 write-back
>> [ 0.000000] 1 base 000080000000 mask FFFFC0000000 write-back
>> [ 0.000000] 2 base 0000B7800000 mask FFFFFF800000 uncachable
>> [ 0.000000] 3 base 0000B8000000 mask FFFFF8000000 uncachable
>> [ 0.000000] 4 disabled
>> [ 0.000000] 5 disabled
>> [ 0.000000] 6 disabled
>> [ 0.000000] 7 disabled
>> [ 0.000000] TOM2: 000000023f000000 aka 9200M
>> [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
>> [ 0.000000] original variable MTRRs
>> [ 0.000000] reg 0, base: 0GB, range: 2GB, type WB
>> [ 0.000000] reg 1, base: 2GB, range: 1GB, type WB
>> [ 0.000000] reg 2, base: 2936MB, range: 8MB, type UC
>> [ 0.000000] reg 3, base: 2944MB, range: 128MB, type UC
>> [ 0.000000] total RAM covered: 2936M
>> [ 0.000000] Found optimal setting for mtrr clean up
>> [ 0.000000] gran_size: 64K chunk_size: 256M num_reg: 4
>> lose cover RAM: 0G
>> [ 0.000000] New variable MTRRs
>> [ 0.000000] reg 0, base: 0GB, range: 2GB, type WB
>> [ 0.000000] reg 1, base: 2GB, range: 1GB, type WB
>> [ 0.000000] reg 2, base: 2936MB, range: 8MB, type UC
>> [ 0.000000] reg 3, base: 2944MB, range: 128MB, type UC
>> [ 0.000000] e820: update [mem 0xb7800000-0xffffffff] usable ==> reserved
>> [ 0.000000] e820: last_pfn = 0xb7800 max_arch_pfn = 0x400000000
>> [ 0.000000] Base memory trampoline at [ffff880000099000] 99000 size 24576
>> [ 0.000000] Using GB pages for direct mapping
>> [ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff]20:
>> last_pfn = 0x23f000 max_arch_pfn = 0x400000000
>> [ 0.000000] MTRR default type: uncachable
>> [ 0.000000] MTRR fixed ranges enabled:
>> [ 0.000000] 00000-9FFFF write-back
>> [ 0.000000] A0000-BFFFF write-through
>> [ 0.000000] C0000-D2FFF write-protect
>> [ 0.000000] D3000-DFFFF uncachable
>> [ 0.000000] E0000-FFFFF write-protect
>> [ 0.000000] MTRR variable ranges enabled:
>> [ 0.000000] 0 base 000000000000 mask FFFF80000000 write-back
>> [ 0.000000] 1 base 000080000000 mask FFFFC0000000 write-back
>> [ 0.000000] 2 base 0000B7800000 mask FFFFFF800000 uncachable
>> [ 0.000000] 3 base 0000B8000000 mask FFFFF8000000 uncachable
>> [ 0.000000] 4 disabled
>> [ 0.000000] 5 disabled
>> [ 0.000000] 6 disabled
>> [ 0.000000] 7 disabled
>> [ 0.000000] TOM2: 000000023f000000 aka 9200M
>
> [4G, 9200M) is write-back automatically, there is no need to cover them
> again with VAR mtrr.
>
>> [ 0.000000] x86 PAT enabled: cpu 0, old 0x7040600070406, new 0x7010600070106
>> [ 0.000000] original variable MTRRs
>> [ 0.000000] reg 0, base: 0GB, range: 2GB, type WB
>> [ 0.000000] reg 1, base: 2GB, range: 1GB, type WB
>> [ 0.000000] reg 2, base: 2936MB, range: 8MB, type UC
>> [ 0.000000] reg 3, base: 2944MB, range: 128MB, type UC
>> [ 0.000000] total RAM covered: 2936M
>
> It only count var really.
>
>> [ 0.000000] Found optimal setting for mtrr clean up
>> [ 0.000000] gran_size: 64K chunk_size: 256M num_reg: 4
>> lose cover RAM: 0G
>> [ 0.000000] New variable MTRRs
>> [ 0.000000] reg 0, base: 0GB, range: 2GB, type WB
>> [ 0.000000] reg 1, base: 2GB, range: 1GB, type WB
>> [ 0.000000] reg 2, base: 2936MB, range: 8MB, type UC
>> [ 0.000000] reg 3, base: 2944MB, range: 128MB, type UC
>> [ 0.000000] e820: update [mem 0xb7800000-0xffffffff] usable ==> reserved
>> [ 0.000000] e820: last_pfn = 0xb7800 max_arch_pfn = 0x400000000
>> [ 0.000000] Base memory trampoline at [ffff880000099000] 99000 size 24576
>> [ 0.000000] Using GB pages for direct mapping
>> [ 0.000000] init_memory_mapping: [mem 0x00000000-0x000fffff]
>> ...
>
> so there is no problem with your system...
Thanks a lot for confirming this!
>
> Thanks
>
> Yinghai