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Re: [Xen-devel] Xen 4.0.0x allows for data corruption in Dom0

To: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Subject: Re: [Xen-devel] Xen 4.0.0x allows for data corruption in Dom0
From: Pasi Kärkkäinen <pasik@xxxxxx>
Date: Tue, 9 Mar 2010 12:25:19 +0200
Cc: "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Joanna Rutkowska <joanna@xxxxxxxxxxxxxxxxxxxxxx>, Jan Beulich <JBeulich@xxxxxxxxxx>, Daniel Stodden <Daniel.Stodden@xxxxxxxxxx>
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On Tue, Mar 09, 2010 at 10:15:45AM +0000, Keir Fraser wrote:
> On 09/03/2010 09:37, "Jan Beulich" <JBeulich@xxxxxxxxxx> wrote:
> >> 7dc2000: 5a02 0000 0000 0000 760d d90c c500 0000  Z.......v.......
> >> 7dc2010: 3785 8def 8003 0000 1eb2 27b5 ff00 0000  7.........'.....
> >> 2dc0d000:7802 0000 0000 0000 ec70 d8eb ce00 0000  x........p......
> >> 2dc0d010:6fb9 a66d 8403 0000 1eb2 27b5 ff00 0000  o..m......'.....
> > 
> > How about these being vcpu_time_info structures? The fields
> > appear to all make sense. The only thing not matching this would
> > be a few differently looking corruption entries sent earlier by Joanna,
> > so this may not be the only thing. But it would explain why with 3.4.2
> > the issue is not present.
> Pasi, can you try the attached patch (which simply stubs out the new
> VCPUOP_register_vcpu_time_memory_area hypercall)?

Yeah, but there's no patch attached ;)

-- Pasi

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