linux-kernel - Re: [PATCH RFC v2 0/9] x86: Support Intel Advanced Performance Extensions

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Message-ID: <Z-KEf0AqHtH8GwBJ@gmail.com>
Date: Tue, 25 Mar 2025 11:25:03 +0100
From: Ingo Molnar <mingo@...nel.org>
To: "Chang S. Bae" <chang.seok.bae@...el.com>
Cc: linux-kernel@...r.kernel.org, x86@...nel.org, tglx@...utronix.de,
	mingo@...hat.com, bp@...en8.de, dave.hansen@...ux.intel.com
Subject: Re: [PATCH RFC v2 0/9] x86: Support Intel Advanced Performance
 Extensions


* Chang S. Bae <chang.seok.bae@...el.com> wrote:

> Chang S. Bae (9):
>   x86/fpu/xstate: Remove xstate offset check
>   x86/fpu/xstate: Introduce xfeature order table and accessor macro
>   x86/fpu/xstate: Adjust XSAVE buffer size calculation
>   x86/fpu/xstate: Adjust xstate copying logic for user ABI

So I've applied these first 4 as preparatory patches to tip:x86/fpu, 
let's get these tested a bit broadly.

>   x86/cpufeatures: Add X86_FEATURE_APX
>   x86/fpu/apx: Define APX state component
>   x86/fpu/apx: Disallow conflicting MPX presence
>   x86/fpu/apx: Enable APX state support
>   selftests/x86/apx: Add APX test

Planning to apply these remaining 5 as well in a couple of days, if all 
goes well with the others.

Thanks,

	Ingo