Re: [RFC][PATCH] ignore set_cr3 GP fault in non-pae mode

[Anthony Liguori <anthony-rdkfGonbjUSkNkDKm+mE6A@public.gmane.org>]

Ryan Harper wrote:
> Playing around with running VMware-server within a KVM guest and noticed
> that whenever we launch a VM within the guest, KVM reports a GP fault in
> set_cr3.  Removing the fault injection (raised for attempting to set
> reserved bits) for the non-pae case allows memtest to boot and run 
> within VMWare Server, running in a KVM Linux guest.
>
> This same test (Linux, VMware-server, booting/running memtest iso) works
> fine on bare-metal.  Thoughts?
>   

Setting reserved bits is different from setting MBZ bits since the 
behaviors undefined.  If something as common as VMware is depending on 
being able to set a reserved bit then perhaps the right thing to do from 
KVM's perspective is to let it.

I'm curious if Zach or Jun have any comments about the right thing to do 
here.

Regards,

Anthony Liguori

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