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Date: Fri, 7 Oct 2022 16:52:44 +0200 From: Peter Zijlstra <peterz@...radead.org> To: Xin Li <xin3.li@...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, hpa@...or.com Subject: Re: [PATCH 6/6] x86/gsseg: use the LKGS instruction if available for load_gs_index() On Thu, Oct 06, 2022 at 08:40:41AM -0700, Xin Li wrote: > +#define LKGS_DI _ASM_BYTES(0xf2,0x0f,0x00,0xf7) This should come with a comment that states the binutils version that understands: "lkgs %di" (or however that ends being).
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