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[Xen-devel] Re: 32bit binaries on x86_64/Xen segfaults in syscall-vdso

To: Bastian Blank <waldi@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxxxxxxxx, 544145@xxxxxxxxxxxxxxx, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
From: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Date: Thu, 03 Sep 2009 15:06:32 -0700
Cc:
Delivery-date: Thu, 03 Sep 2009 15:07:03 -0700
List-id: Xen developer discussion <xen-devel.lists.xensource.com>

On 09/03/09 15:02, Bastian Blank wrote:
> AFAIK only AMD support the syscall instruction, so yes it is an AMD
> machine. And yes, disabling the only thing that make the glibc call this
> instruction works around it.
>   

The bug actually appears to be in xen_sysret32, ie the crash happens on
the way out of the kernel.

    J

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References:
- [Xen-devel] Re: 32bit binaries on x86_64/Xen segfaults in syscall-vdso
  - From: Jeremy Fitzhardinge

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