AMD root search fix

[PATCH 0/2] AMD root search fix

Posted by Yazen Ghannam 1 day, 3 hours ago

Hi all,

Recently, there have been a couple of reports of the AMD64 EDAC module
failing to load on v6.14+.

This has been root caused to the recent AMD node rework. Specifically,
the root device caching method breaks on non-reference boards.

Patch 1 is a proposed fix.

Patch 2 is a minor cleanup.

Thanks,
Yazen

---
Yazen Ghannam (2):
      x86/amd_node: Fix AMD root device caching
      x86/amd_node: Use new root search helper

 arch/x86/include/asm/amd/node.h |   1 -
 arch/x86/kernel/amd_node.c      | 107 ++++++++++++++--------------------------
 2 files changed, 37 insertions(+), 71 deletions(-)
---
base-commit: 30d4efb2f5a515a60fe6b0ca85362cbebea21e2f
change-id: 20250930-fix-amd-root-2a6529e8162a

Re: [PATCH 0/2] AMD root search fix

Posted by Mario Limonciello (AMD) (kernel.org) 1 day, 2 hours ago


On 9/30/2025 11:45 AM, Yazen Ghannam wrote:
> Hi all,
> 
> Recently, there have been a couple of reports of the AMD64 EDAC module
> failing to load on v6.14+.
> 
> This has been root caused to the recent AMD node rework. Specifically,
> the root device caching method breaks on non-reference boards.
> 
> Patch 1 is a proposed fix.
> 
> Patch 2 is a minor cleanup.
> 
> Thanks,
> Yazen
> 
> ---
> Yazen Ghannam (2):
>        x86/amd_node: Fix AMD root device caching
>        x86/amd_node: Use new root search helper
> 
>   arch/x86/include/asm/amd/node.h |   1 -
>   arch/x86/kernel/amd_node.c      | 107 ++++++++++++++--------------------------
>   2 files changed, 37 insertions(+), 71 deletions(-)
> ---
> base-commit: 30d4efb2f5a515a60fe6b0ca85362cbebea21e2f
> change-id: 20250930-fix-amd-root-2a6529e8162a
> 

Reviewed-by: Mario Limonciello (AMD) <superm1@kernel.org>