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

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Message-ID: <20250616083944.GC1613376@noisy.programming.kicks-ass.net>
Date: Mon, 16 Jun 2025 10:39:44 +0200
From: Peter Zijlstra <peterz@...radead.org>
To: Uros Bizjak <ubizjak@...il.com>
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 10:35:57AM +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?