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Re: [Qemu-devel] [PATCH v8] kvm: notify host when the guest is panicked


From: Yan Vugenfirer
Subject: Re: [Qemu-devel] [PATCH v8] kvm: notify host when the guest is panicked
Date: Wed, 15 Aug 2012 14:42:20 +0300

On Aug 15, 2012, at 12:56 PM, Gleb Natapov wrote:

> On Tue, Aug 14, 2012 at 02:35:34PM -0500, Anthony Liguori wrote:
>>> Do you consider allowing support for Windows as overengineering?
>> 
>> I don't think there is a way to hook BSOD on Windows so attempting to
>> engineer something that works with Windows seems odd, no?
>> 
> Yan says in other email that is is possible to register a bugcheck callback.
> 

Here you go - 
http://msdn.microsoft.com/en-us/library/windows/hardware/ff553105(v=vs.85).aspx
Already done in virtio-net for two reasons: 1. we could configure virtio-net to 
notify QEMU in a hacky way (write 1 to VIRTIO_PCI_ISR register) that there was 
a bugckeck .It was very useful debugging complex WHQL issues that involved host 
networking. 2. Store additional information (for example time stamps of last 
receive packet, last interrupt and etc) in crash dump.

Yan.

> --
>                       Gleb.
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