This file was created long ago and information inside is
obviously outdated.
Signed-off-by: Jiaxun Yang <[email protected]>
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arch/mips/kvm/00README.txt | 31 -------------------------------
1 file changed, 31 deletions(-)
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-KVM/MIPS Trap & Emulate Release Notes
-=====================================
-
-(1) KVM/MIPS should support MIPS32R2 and beyond. It has been tested on the following platforms:
- Malta Board with FPGA based 34K
- Sigma Designs TangoX board with a 24K based 8654 SoC.
- Malta Board with 74K @ 1GHz
-
-(2) Both Guest kernel and Guest Userspace execute in UM.
- Guest User address space: 0x00000000 -> 0x40000000
- Guest Kernel Unmapped: 0x40000000 -> 0x60000000
- Guest Kernel Mapped: 0x60000000 -> 0x80000000
-
- Guest Usermode virtual memory is limited to 1GB.
-
-(2) 16K Page Sizes: Both Host Kernel and Guest Kernel should have the same page size, currently at least 16K.
- Note that due to cache aliasing issues, 4K page sizes are NOT supported.
-
-(3) No HugeTLB Support
- Both the host kernel and Guest kernel should have the page size set to 16K.
- This will be implemented in a future release.
-
-(4) KVM/MIPS does not have support for SMP Guests
- Linux-3.7-rc2 based SMP guest hangs due to the following code sequence in the generated TLB handlers:
- LL/TLBP/SC. Since the TLBP instruction causes a trap the reservation gets cleared
- when we ERET back to the guest. This causes the guest to hang in an infinite loop.
- This will be fixed in a future release.
-
-(5) Use Host FPU
- Currently KVM/MIPS emulates a 24K CPU without a FPU.
- This will be fixed in a future release
--
2.27.0