Re: exposed processor type, unsupported operations, intelppm.sys and windows crashs

[Izik Eidus <izike-atKUWr5tajBWk0Htik3J/w@public.gmane.org>]

Gildas wrote:
> Hi,
>
> I had a problem when moving my windows XP machine from the ACPI HAL to
> the standard PC HAL in order to get better performances (as pointed in
> http://kvm.qumranet.com/kvmwiki/Windows_ACPI_Workaround): on reboot
> the machine would just BSOD with kvm but work with -no-kvm.
>
> The BSOD message was about intelppm.sys, so I did my homework,
> searched on Google and I found a page on Ben Armstrong's Blog:
> http://blogs.msdn.com/virtual_pc_guy/archive/2005/10/24/484461.aspx
>
> The very interesting part of the article is:
>
> "In the mean time we have made some subtle changes to the way our
> hardware exposes the processor in Virtual Server R2 so that in future
> products these drivers should never get loaded inside of virtual
> machines."
>
> Should similar tricks be performed in kvm?
>   
kvm have patch that we wrote that let us play with how the cpu expose 
itself by the meaning of the cpuid instruction.
but i believe it is something else ther.e


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