Re: [PATCH v2] platform/x86: ISST: Avoid model check for recent servers
From: Ilpo Järvinen
Date: Thu Sep 17 2026 - 11:13:24 EST
On Tue, 18 Aug 2026 13:34:27 -0700, Srinivas Pandruvada wrote:
> To enable SST functions, a CPU model entry is required. This causes
> unnecessary delays in deploying new servers on older kernels.
>
> To avoid this, if no CPU model match is found, allow the SST common
> driver to load, when all of the following conditions are met:
>
> - Not running as a guest.
> - The platform is identified as a server via ACPI PM profile.
> - The CPU belongs to the Intel family 19 (decimal), which starts with
> Diamond Rapids. All recent servers are capable of enumerating SST
> features.
> - MSR_PM_LOGICAL_ID (0x54) is present to retrieve the PM logical ID.
>
> [...]
Thank you for your contribution, it has been applied to my local
review-ilpo-next branch. Note it will show up in the public
platform-drivers-x86/review-ilpo-next branch only once I've pushed my
local branch there, which might take a while.
FYI [if applicable to your patch], as per Linus' policy change, also
fixes are mostly routed through for-next unless the fix is for a
commit introduced in the most recent cycle or is clearly a regression
fix.
The list of commits applied:
[1/1] platform/x86: ISST: Avoid model check for recent servers
commit: 153de724f47af43f0e0a1acc3b1dada18322cd18
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i.