2021-03-05 16:30:51

by Mike Travis

Subject: [PATCH v2] x86/platform/uv: Add set of kernel block size for hubless arches

The commit below added a call to set the block size value that is needed
by the kernel to set the boundaries in the section list. This was done
for UV Hubbed systems but missed in the UV Hubless setup. Fix that
mistake by adding that same set call for hubless systems, which support
the same NVRAMS and Intel BIOS, thus the same problem occurs.

Fixes: bbbd2b51a2aa ("x86/platform/UV: Use new set memory block size function")

Signed-off-by: Mike Travis <[email protected]>
Reviewed-by: Steve Wahl <[email protected]>
Reviewed-by: Russ Anderson <[email protected]>
---
v2: Change patch description to match requirements.
---
arch/x86/kernel/apic/x2apic_uv_x.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 52bc217ca8c3..c9ddd233e32f 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -1671,6 +1671,9 @@ static __init int uv_system_init_hubless(void)
if (rc < 0)
return rc;

+ /* Set section block size for current node memory */
+ set_block_size();
+
/* Create user access node */
if (rc >= 0)
uv_setup_proc_files(1);
--
2.21.0

2021-03-08 11:42:48

by tip-bot2 for Antonio Borneo

Subject: [tip: x86/platform] x86/platform/uv: Set section block size for hubless architectures

The following commit has been merged into the x86/platform branch of tip:

Commit-ID: 6840a150b9daf35e4d21ab9780d0a03b4ed74a5b
Gitweb: https://git.kernel.org/tip/6840a150b9daf35e4d21ab9780d0a03b4ed74a5b
Author: Mike Travis <[email protected]>
AuthorDate: Fri, 05 Mar 2021 10:28:53 -06:00
Committer: Borislav Petkov <[email protected]>
CommitterDate: Mon, 08 Mar 2021 12:17:53 +01:00

x86/platform/uv: Set section block size for hubless architectures

Commit

bbbd2b51a2aa ("x86/platform/UV: Use new set memory block size function")

added a call to set the block size value that is needed by the kernel
to set the boundaries in the section list. This was done for UV Hubbed
systems but missed in the UV Hubless setup. Fix that mistake by adding
that same set call for hubless systems, which support the same NVRAMs
and Intel BIOS, thus the same problem occurs.

[ bp: Massage commit message. ]

Fixes: bbbd2b51a2aa ("x86/platform/UV: Use new set memory block size function")
Signed-off-by: Mike Travis <[email protected]>
Signed-off-by: Borislav Petkov <[email protected]>
Reviewed-by: Steve Wahl <[email protected]>
Reviewed-by: Russ Anderson <[email protected]>
Link: https://lkml.kernel.org/r/[email protected]
---
arch/x86/kernel/apic/x2apic_uv_x.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/arch/x86/kernel/apic/x2apic_uv_x.c b/arch/x86/kernel/apic/x2apic_uv_x.c
index 52bc217..c9ddd23 100644
--- a/arch/x86/kernel/apic/x2apic_uv_x.c
+++ b/arch/x86/kernel/apic/x2apic_uv_x.c
@@ -1671,6 +1671,9 @@ static __init int uv_system_init_hubless(void)
if (rc < 0)
return rc;

+ /* Set section block size for current node memory */
+ set_block_size();
+
/* Create user access node */
if (rc >= 0)
uv_setup_proc_files(1);