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From: Jeremy Fitzhardinge <jeremy@goop.org>
To: john.blackwood@ccur.com
Cc: linux-kernel@vger.kernel.org,
	Jeremy Fitzhardinge <jeremy@xensource.com>,
	Andi Kleen <ak@suse.de>, Roland McGrath <roland@redhat.com>,
	bugsy@ccur.com, Andrew Morton <akpm@linux-foundation.org>
Subject: Re: [PATCH] Reading the VDSO area - i386
Date: Tue, 17 Jul 2007 09:47:56 -0700	[thread overview]
Message-ID: <469CF2BC.3000306@goop.org> (raw)
In-Reply-To: <469CECFE.6060408@ccur.com>

John Blackwood wrote:
> I was doing some tests that attempt to read the VDSO area of a
> task through either the /proc/pid/mem or ptrace(PTRACE_PEEKTEXT,
> ...) interfaces, and it seems that when the CONFIG_COMPAT_VDSO kernel
> parameter is enabled, we can no longer successfully read the VDSO area
> on i386 kernels.

Thanks.  Someone else noticed this recently, and posted a near-identical
patch.  But I can't seem to find it right now...

Andrew, Andi: do you remember something like this passing by?

    J

  reply	other threads:[~2007-07-17 16:49 UTC|newest]

Thread overview: 5+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-07-17 16:23 [PATCH] Reading the VDSO area - i386 John Blackwood
2007-07-17 16:47 ` Jeremy Fitzhardinge [this message]
2007-07-17 17:48   ` Andi Kleen
2007-07-17 17:51     ` Jeremy Fitzhardinge
2007-07-17 17:57       ` Andi Kleen

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