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From: "Jan Beulich" <jbeulich@novell.com>
To: Jeremy Fitzhardinge <jeremy@goop.org>
Cc: Virtualization Mailing List <virtualization@lists.osdl.org>,
	xen-devel@lists.xensource.com,
	Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [Xen-devel] [PATCH 2/10] linux 2.6.18: COMPAT_VDSO
Date: Tue, 06 Mar 2007 07:52:47 +0000	[thread overview]
Message-ID: <45ED2BDF.76E4.0078.0@novell.com> (raw)
In-Reply-To: <45EC787B.2020807@goop.org>

>Ingo just raised this as an issue for paravirt_ops as well.  I don't
>quite follow what's going on there.   My understanding is that there are
>some old versions of glibc (which were unreleased CVS snapshots shipped
>by some vendors) which don't use the vdso's ELF header, but instead have
>their own canned one which built into the library itself.

Perhaps you meanwhile saw the similar question from Keir regarding this
(and my answer), but in short: plain glibc 2.3.2 (at least) supports AT_SYSINFO
but not AT_SYSINFO_HDR. In this scenario, moving the vDSO around is fine,
but glibc-internal (arguably broken) consistency checks prevent the vDSO from
being accepted when not using COMPAT_VDSO.

Jan

      reply	other threads:[~2007-03-06  7:52 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <45EC098D.76E4.0078.0@novell.com>
2007-03-05 20:07 ` [PATCH 2/10] linux 2.6.18: COMPAT_VDSO Jeremy Fitzhardinge
2007-03-06  7:52   ` Jan Beulich [this message]

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