From: Jeremy Fitzhardinge <jeremy@goop.org>
To: "Robert Kaiser (FH)" <kaiser@informatik.fh-wiesbaden.de>
Cc: xen-devel@lists.xensource.com, Ingo Molnar <mingo@elte.hu>,
Linux Kernel Mailing List <linux-kernel@vger.kernel.org>
Subject: Re: [Xen-devel] Re: [PATCH] xen: remove support for non-PAE 32-bit
Date: Tue, 13 May 2008 14:59:44 +0100 [thread overview]
Message-ID: <48299ED0.6020402@goop.org> (raw)
In-Reply-To: <200805131528.09429.kaiser@informatik.fh-wiesbaden.de>
Robert Kaiser (FH) wrote:
>> I think there's a bug in qemu's x86
>> emulation with respect to mis-reporting the eip of an xchg which faults,
>> which may be what you're seeing.
>>
>
> The eip that was reported was always the same, and there was no xchg
> instruction at that address. It might have been consistently wrong though
> (how would I figure this out?).
>
The symptom I've observed is that qemu reports the first instruction of
the basic block rather than the exchange itself. If you "x/10i <fault
eip>", you should see an xchg before long.
Either way, sounds like a qemu bug which should be reported to them.
J
prev parent reply other threads:[~2008-05-13 14:00 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-05-09 11:05 [PATCH] xen: remove support for non-PAE 32-bit Jeremy Fitzhardinge
2008-05-13 11:08 ` Ingo Molnar
2008-05-13 11:32 ` [Xen-devel] " Robert Kaiser (FH)
2008-05-13 11:42 ` Keir Fraser
2008-05-13 11:48 ` Jeremy Fitzhardinge
2008-05-13 13:28 ` Robert Kaiser (FH)
2008-05-13 13:59 ` Jeremy Fitzhardinge [this message]
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