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Date:   Fri, 7 Oct 2022 16:52:44 +0200
From:   Peter Zijlstra <peterz@infradead.org>
To:     Xin Li <xin3.li@intel.com>
Cc:     linux-kernel@vger.kernel.org, x86@kernel.org, tglx@linutronix.de,
        mingo@redhat.com, bp@alien8.de, dave.hansen@linux.intel.com,
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Subject: Re: [PATCH 6/6] x86/gsseg: use the LKGS instruction if available for
 load_gs_index()
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References: <20221006154041.13001-1-xin3.li@intel.com>
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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).