linux-kernel - Re: For your amusement: slightly faster syscalls

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Date:	Thu, 18 Jun 2015 11:06:25 +0200
From:	Ingo Molnar <mingo@...nel.org>
To:	"H. Peter Anvin" <hpa@...or.com>
Cc:	Andy Lutomirski <luto@...capital.net>,
	Linus Torvalds <torvalds@...ux-foundation.org>,
	Denys Vlasenko <vda.linux@...glemail.com>,
	Borislav Petkov <bp@...en8.de>, X86 ML <x86@...nel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: For your amusement: slightly faster syscalls


* H. Peter Anvin <hpa@...or.com> wrote:

> Well... with UP we don't even need GS in the kernel...

Yeah, but it was just a simple demo, to see how much of a speedup the GS access 
reordering it is, so in that sense it was good enough to see that the speedup is 3 
cycles.

(Got the original email forwarded meanwhile.)

Thanks,

	Ingo
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