linux-kernel - Re: [PATCH] platform/x86: ISST: Do Not Restore SST MSRs on CPU Online Operation

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Message-Id: <174661423219.2744.949615861915039788.b4-ty@linux.intel.com>
Date: Wed, 07 May 2025 13:37:12 +0300
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: hdegoede@...hat.com, 
 Srinivas Pandruvada <srinivas.pandruvada@...ux.intel.com>
Cc: platform-driver-x86@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] platform/x86: ISST: Do Not Restore SST MSRs on CPU
 Online Operation

On Mon, 05 May 2025 13:27:22 -0700, Srinivas Pandruvada wrote:

> During CPU offline/online operations, the hardware retains MSR settings.
> Even if all CPUs are offlined, the package does not lose its MSR
> settings.
> 
> Therefore, it is unnecessary to restore MSRs which are modified during
> the online operation, and this extra step can be removed.
> 
> [...]


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.

The list of commits applied:
[1/1] platform/x86: ISST: Do Not Restore SST MSRs on CPU Online Operation
      commit: 68ea978fa096dd62aed386b384e3bc7e713d3b79

--
 i.