linux-kernel - Re: [PATCH] x86/asm: Use RDPKRU and WRPKRU mnemonics in <asm/special

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Message-ID: <CAFULd4YQe=xb2-GH8EHLyiNQL=uCBZ7QAqmasyroT9ZhPoRRwg@mail.gmail.com>
Date: Mon, 16 Jun 2025 10:47:58 +0200
From: Uros Bizjak <ubizjak@...il.com>
To: Peter Zijlstra <peterz@...radead.org>
Cc: x86@...nel.org, linux-kernel@...r.kernel.org, 
	Thomas Gleixner <tglx@...utronix.de>, Ingo Molnar <mingo@...nel.org>, Borislav Petkov <bp@...en8.de>, 
	Dave Hansen <dave.hansen@...ux.intel.com>, "H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH] x86/asm: Use RDPKRU and WRPKRU mnemonics in <asm/special_insns.h>

On Mon, Jun 16, 2025 at 10:39 AM Peter Zijlstra <peterz@...radead.org> wrote:
>
> On Mon, Jun 16, 2025 at 10:35:57AM +0200, Uros Bizjak wrote:
> > Current minimum required version of binutils is 2.30,
> > which supports RDPKRU and WRPKRU instruction mnemonics.
> >
> > Replace the byte-wise specification of RDPKRU and
> > WRPKRU with these proper mnemonics.
>
> What about the minimal clang version and their integrated assembler?

Yes, it works with the minimum required clang version 13.0.1.

Uros.