linux-kernel - Re: [tip: x86/fpu] x86/fpu: Use XSAVE{,OPT,C,S} and XRSTOR{,S} mnemonics in xstate.h

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Message-ID: <05953E05-28D0-4640-9ECF-BDDB9521ECD3@zytor.com>
Date: Mon, 17 Mar 2025 11:49:54 -0700
From: "H. Peter Anvin" <hpa@...or.com>
To: Borislav Petkov <bp@...en8.de>
CC: Uros Bizjak <ubizjak@...il.com>, linux-kernel@...r.kernel.org,
        linux-tip-commits@...r.kernel.org, Ingo Molnar <mingo@...nel.org>,
        Andy Lutomirski <luto@...nel.org>, Brian Gerst <brgerst@...il.com>,
        Dave Hansen <dave.hansen@...ux.intel.com>,
        Linus Torvalds <torvalds@...ux-foundation.org>, x86@...nel.org
Subject: Re: [tip: x86/fpu] x86/fpu: Use XSAVE{,OPT,C,S} and XRSTOR{,S} mnemonics in xstate.h

On March 17, 2025 11:48:39 AM PDT, Borislav Petkov <bp@...en8.de> wrote:
>On Mon, Mar 17, 2025 at 11:38:12AM -0700, H. Peter Anvin wrote:
>> Ok, I'm going to argue, but only because the argument is called "st" and the
>> assembly parameter "xa". That's needlessly different and means having to
>> look extra hard 
>> 
>> We can obviously not use the same token, but IMO it would make a lot more
>> sense to call one of them _st or perhaps st_p (being a pointer).
>
>Already documented:
>
>https://git.kernel.org/tip/4348e9177813656d5d8bd18f34b3e611df004032
>
>Got tired of discussing the obvious.
>

Ok.