linux-kernel - Re: [PATCH v2 0/2] x86/fpu: Extend kernel_fpu_begin

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Message-ID: <80023e25-e582-e0aa-7428-ee17fecdbcef@linux.intel.com>
Date: Wed, 8 May 2024 11:28:10 +0300 (EEST)
From: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>
To: "Chang S. Bae" <chang.seok.bae@...el.com>
cc: LKML <linux-kernel@...r.kernel.org>, x86@...nel.org, 
    platform-driver-x86@...r.kernel.org, tglx@...utronix.de, mingo@...hat.com, 
    bp@...en8.de, dave.hansen@...ux.intel.com, 
    Hans de Goede <hdegoede@...hat.com>, tony.luck@...el.com, 
    ashok.raj@...el.com, jithu.joseph@...el.com
Subject: Re: [PATCH v2 0/2] x86/fpu: Extend kernel_fpu_begin_mask() for the
 In-Field Scan driver

On Tue, 7 May 2024, Chang S. Bae wrote:

> Following feedback from the previous posting [1], this revision comes
> with the changelog updates for more clarity:
> 
> * The recent change in the SDM alone does not fully explain the
>   underlying reasons. Provide a clearer explanation rather than simply
>   echoing the SDM text.
> 
> * While it is feasible for administrators to isolate CPUs running the
>   In-Field Scan tests from those running AMX workloads, this approach is
>   considerably disruptive and conflicts with the goal of its live
>   testing. Add this point to the changelog as well.
> 
> Thanks to Dave for highlighting these aspects [2]. Additionally, it is
> worth noting that the IFS Technical Paper [3] was recently published,
> which may offer further context on the IFS testing.
> 
> Thanks,
> Chang
> 
> [1] V1: https://lore.kernel.org/lkml/20240430212508.105117-1-chang.seok.bae@intel.com/
> [2] Feedback: https://lore.kernel.org/lkml/a41d7012-2eea-436e-9f7e-6a7702f7e2c2@intel.com/
> [3] IFS Paper: https://www.intel.com/content/www/us/en/content-details/822279/finding-faulty-components-in-a-live-fleet-environment.html
> 
> Chang S. Bae (2):
>   x86/fpu: Extend kernel_fpu_begin_mask() to initialize AMX state
>   platform/x86/intel/ifs: Initialize AMX state for the scan test

For both patches:

Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@...ux.intel.com>


-- 
 i.