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Date: Mon, 6 Jun 2011 19:22:09 +0200
From: Ingo Molnar <mingo@...e.hu>
To: Dave Anderson <anderson@...hat.com>, Andy Lutomirski <luto@....edu>
Cc: linux-kernel@...r.kernel.org, andi@...stfloor.org,
jstancek@...hat.com, Thomas Gleixner <tglx@...utronix.de>,
"H. Peter Anvin" <hpa@...or.com>
Subject: Re: [PATCH] x86-64: Prevent gcc from optimizing away venosys_1()
* Dave Anderson <anderson@...hat.com> wrote:
> One of the changes in commit a4928cffe6435caf427ae673131a633c1329dbf3
> made the venosys_1() system call static, which causes it to be
> optimized out of the kernel:
>
> Author: Ingo Molnar <mingo@...e.hu>
> Date: Wed Apr 23 13:20:56 2008 +0200
>
> "make namespacecheck" fixes
>
> Signed-off-by: Ingo Molnar <mingo@...e.hu>
Andy noticed this recently, so we got rid of that broken (and unused)
syscall in:
bb5fe2f78ead: x86-64: Remove vsyscall number 3 (venosys)
which is in the tip:x86/vdso branch at:
http://people.redhat.com/mingo/tip.git/README
Thanks,
Ingo
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