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

[Ryan Harper <ryanh-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org>]

* Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org> [2007-09-19 03:58]:
> Ryan Harper wrote:
> >>
> >>We have a test which verifies #GP is not caused by setting the bits on
> >>either AMD or Intel chips.  "Stray" bits can get turned on in some cases
> >>when switching between 64-bit, PAE and non-PAE address modes.
> >>
> >>Were you testing on a 64-bit host kernel?
> >>    
> >
> >64-bit Host running 32-bit KVM Guest. VMware-server shouldn't be seeing
> >anything 64-bit AFAIK.
> >  
> 
> If the host is 64-bit, so is the guest, although the guest can choose to 
> ignore the 64-bit capabilities (and 32-bit guest OSes do; but VMware 
> might be doing something tricky).

Hrm.  I'm not sure I understand the distiction you are making.  I'll
give a 32-bit host a try without the patch and see if I see the same
behavior.

-- 
Ryan Harper
Software Engineer; Linux Technology Center
IBM Corp., Austin, Tx
(512) 838-9253   T/L: 678-9253
ryanh-r/Jw6+rmf7HQT0dZR+AlfA@public.gmane.org

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