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

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [day] [month] [year] [list]

Message-ID: <20250616085332.GD1613376@noisy.programming.kicks-ass.net>
Date: Mon, 16 Jun 2025 10:53:32 +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 10:47:58AM +0200, Uros Bizjak wrote:
> 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.

Excellent!

Acked-by: Peter Zijlstra (Intel) <peterz@...radead.org>