linux-kernel - Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after init

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Message-ID: <569F072B.1020504@zytor.com>
Date:	Tue, 19 Jan 2016 20:03:55 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Borislav Petkov <bp@...e.de>,
	Andy Lutomirski <luto@...capital.net>,
	Brian Gerst <brgerst@...il.com>
Cc:	the arch/x86 maintainers <x86@...nel.org>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Ingo Molnar <mingo@...nel.org>,
	Denys Vlasenko <dvlasenk@...hat.com>,
	Linus Torvalds <torvalds@...ux-foundation.org>
Subject: Re: [PATCH] x86: static_cpu_has_safe: discard dynamic check after
 init

On 01/19/16 05:57, Borislav Petkov wrote:
> 
> old insn VA: 0xffffffff8108c0d0, CPU feat: X86_BUG_SYSRET_SS_ATTRS, size: 2, padlen: 0
> __switch_to:
>  ffffffff8108c0d0:      eb 70                   jmp ffffffff8108c142
> repl insn: 0xffffffff8ca7a1a7, size: 0
> 

This is the only one I could possibly imagine mattering.  Would it be
possible to get the disassembly here?

	-hpa