Re: [Xen-devel] GPLPV + Xen Unstable BSOD

[Andrew Lyon <andrew.lyon@xxxxxxxxx>]

On Wed, Feb 25, 2009 at 11:28 AM, Andrew Lyon <andrew.lyon@xxxxxxxxx> wrote:
> On Wed, Feb 25, 2009 at 11:20 AM, James Harper
> <james.harper@xxxxxxxxxxxxxxxx> wrote:
>>>
>>> On Wed, Feb 25, 2009 at 11:08 AM, James Harper
>>> <james.harper@xxxxxxxxxxxxxxxx> wrote:
>>> >> On 25/02/2009 02:48, "James Harper" <james.harper@xxxxxxxxxxxxxxxx>
>>> > wrote:
>>> >>
>>> >> > My Xen Signature is 'XenVMMXenVMM', and my Hypercall area is page
>>> >> > aligned. Any suggestion as to why you might be getting 'Microsoft
>>> > Hv'? I
>>> >> > suspect that maybe Xen unstable is trying to make itself look
>> like a
>>> >> > Microsoft HyperV system so that Windows behaves a bit better, but
>>> >> > obviously that has introduced other problems. Can you turn that
>> off?
>>> > You
>>> >> > might ultimately need it turned on but if you turn it off and it
>>> > works I
>>> >> > will be a bit more certain about the problem.
>>> >>
>>> >> Probably 'viridian=1' is in the domain config file. So that can
>> simply
>>> > be
>>> >> removed to revert to old CPUID behaviour. Or even explicitly put
>>> >> 'viridian=0' in the config file.
>>> >
>>> > Andrew: Can you please try with that option?
>>>
>>> Exactly right, I had viridian=1 in the config file, thats the reason I
>>> wanted to use unstable, becuase it has viridian support which will set
>>> the "relaxed timer" cpuid bit to prevent bsod with code 101 which I
>>> get on 3.3.x,
>>
>> I was afraid of that :)
>>
>>> I have removed the setting and tried the install again,
>>> it did not crash and the drivers were all detected normally, I've not
>>> tried booting up with the drivers loaded yet as my xp vm has decided
>>> to install a load of updates as it shuts down, as soon as its finished
>>> I will try booting up with the drivers loaded.
>
> Booting up now.. seems ok so far.

Just to let you know, seems to work perfectly with viridian=0, the
emulated devices have disappeared in device manager too :).

>
>>>
>>> Anwyay, viridian seems to be the problem, can it be easily fixed?
>>>
>>
>> I could make available an installer for you to test if you want, but
>> it's very beta at the moment, and probably not for a few days anyway as
>> there is at least one bug I know of that will cause you pain :)
>
> That would be great, at the moment the bsod 101 causes my system to
> lockup if the crashing vm has a pci passthrough device so I'm already
> in quite a bit of pain.
>
> Thanks for looking into this James, great work as usual :).
>
> Andy
>
>>
>> James
>>
>>
>

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