From: Ulrich Drepper <drepper@redhat.com>
To: "Eric W. Biederman" <ebiederm@xmission.com>
Cc: "Randy.Dunlap" <rddunlap@osdl.org>,
fastboot@lists.osdl.org, lkml <linux-kernel@vger.kernel.org>
Subject: Re: [Fastboot] Re: [announce] kexec for linux 2.6.6
Date: Wed, 12 May 2004 09:31:56 -0700 [thread overview]
Message-ID: <40A2517C.4040903@redhat.com> (raw)
In-Reply-To: <m1brktod3f.fsf@ebiederm.dsl.xmission.com>
Eric W. Biederman wrote:
> As a first draft we should be able to use the standard ELF mechanisms
> for this. It is not like PIC shared libraries were new. Or is
> there some specific problem you are thinking of with respect to
> randomization?
The official kernel does not have vdso randomization. Ingo has a patch
for the Red Hat kernel which is used in the FC2 kernel. The patch
effectively only changes the location at which the vdso is mapped. It
does not change the vdso content. So the __kernel_vsyscall symbol in
the vdso's symbol table is not changed.
AT_SYSINFO is the right way to go forward but it is not directly
accessible to userlevel code. And it is no pointer which will make
architectures with function descriptors unhappy.
--
➧ Ulrich Drepper ➧ Red Hat, Inc. ➧ 444 Castro St ➧ Mountain View, CA ❖
next prev parent reply other threads:[~2004-05-12 16:32 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-05-12 4:26 [announce] kexec for linux 2.6.6 Randy.Dunlap
2004-05-12 5:00 ` Ulrich Drepper
2004-05-12 6:18 ` [Fastboot] " Eric W. Biederman
2004-05-12 15:33 ` Ulrich Drepper
2004-05-12 15:54 ` Eric W. Biederman
2004-05-12 16:31 ` Ulrich Drepper [this message]
2004-05-12 16:57 ` Eric W. Biederman
2004-05-12 21:32 ` Randy.Dunlap
2004-05-12 22:08 ` David Mosberger
2004-05-12 22:28 ` Andrew Morton
2004-05-12 22:33 ` David Mosberger
2004-05-12 23:16 ` Andrew Morton
2004-05-12 23:27 ` David Mosberger
2004-05-13 4:30 ` Christoph Hellwig
2004-05-13 5:05 ` Willy Tarreau
2004-05-13 5:21 ` William Lee Irwin III
2004-05-13 5:48 ` Christoph Hellwig
2004-05-13 6:06 ` Eric W. Biederman
2004-05-13 6:20 ` Andrew Morton
2004-05-13 6:39 ` Eric W. Biederman
2004-05-13 7:33 ` Christoph Hellwig
2004-05-13 7:37 ` Andrew Morton
2004-05-13 7:49 ` Christoph Hellwig
2004-05-13 8:04 ` Andrew Morton
2004-05-13 13:52 ` Eric W. Biederman
2004-05-13 15:02 ` Randy.Dunlap
2004-05-14 5:21 ` Eric W. Biederman
2004-05-14 18:14 ` Adam Litke
2004-05-15 2:25 ` Eric W. Biederman
2004-05-17 0:49 ` H. Peter Anvin
2004-05-12 5:05 ` [Fastboot] " Eric W. Biederman
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