linux-kernel - Re: 2.6.23-rc3-mm1 - vdso and gettimeofday issues with glibc

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Message-ID: <46D62F8A.6010303@redhat.com>
Date:	Wed, 29 Aug 2007 19:46:34 -0700
From:	Ulrich Drepper <drepper@...hat.com>
To:	Andrew Morton <akpm@...ux-foundation.org>
CC:	Valdis.Kletnieks@...edu, jakub@...hat.com,
	linux-kernel@...r.kernel.org, Andi Kleen <ak@...e.de>
Subject: Re: 2.6.23-rc3-mm1 - vdso and gettimeofday issues with glibc

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Andrew Morton wrote:
> So it's an interaction between the x86_64 vdso patches in Andi's tree and 
> newer glibc, and we don't know which one is getting it wrong yet?

glibc does nothing but call the code in the vdso.  We have a function
pointer variable which either has the old vsyscall value or the address
of the function in the vdso.  Everything else is identical.  Unless the
interface of the vdso function is different (which it shouldn't) I don't
think you can blame glibc.

- --
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
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