linux-kernel - Re: [PATCH 16/17] x86: entry_64.S: trivial optimization for ENOSYS

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Date:	Sat, 9 Aug 2014 07:48:35 +0900
From:	Andy Lutomirski <luto@...capital.net>
To:	Denys Vlasenko <dvlasenk@...hat.com>
Cc:	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Oleg Nesterov <oleg@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Frederic Weisbecker <fweisbec@...il.com>,
	X86 ML <x86@...nel.org>, Alexei Starovoitov <ast@...mgrid.com>,
	Will Drewry <wad@...omium.org>,
	Kees Cook <keescook@...omium.org>
Subject: Re: [PATCH 16/17] x86: entry_64.S: trivial optimization for ENOSYS

On Sat, Aug 9, 2014 at 2:44 AM, Denys Vlasenko <dvlasenk@...hat.com> wrote:
> This code uses a slightly shorter insn.

See this for an alternative approach:

http://thread.gmane.org/gmane.linux.kernel.cross-arch/24167

--Andy
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