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Date: Mon, 10 Oct 2011 13:09:17 +0200
From: Paolo Bonzini <pbonzini@redhat.com>
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Subject: Re: [Qemu-devel] [Question] dump memory when host pci device is
	used by guest
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To: "Daniel P. Berrange" <berrange@redhat.com>
Cc: Jan Kiszka <jan.kiszka@siemens.com>, Luiz Capitulino <lcapitulino@redhat.com>, qemu-devel <qemu-devel@nongnu.org>, "Richard W.M. Jones" <rjones@redhat.com>

On 10/10/2011 01:04 PM, Daniel P. Berrange wrote:
> On Mon, Oct 10, 2011 at 12:48:52PM +0200, Paolo Bonzini wrote:
>> >  On 10/10/2011 12:21 PM, Alon Levy wrote:
>>>> >  >>    A core file would be that format - for direct gdb processing. No
>>>> >  >>    proprietary re-inventions please.
>>> >  >
>>> >  >Just a note: A core file to windows core dump file would be nice for
>>> >  >windows guest crashes.
>> >
>> >  That requires cooperation from a kernel driver in the Windows guest.
>> >  The driver must call KeInitializeCrashDumpHeader and write somewhere
>> >  the physical address of the buffer.
> That won't be suitable for 'virsh dump' then, because we need this to
> work when the guest OS is in a crashed/non-responsive state, and so
> we cna't rely on talking to it.

Note that the guest can generate the buffer before it crashes.

Paolo