On 06/24/2011 04:13 AM, Marcelo Tosatti wrote:
>> No, not all no mmio spte is considered a genuine EPT misconfig, as the above
>> case, we can get !is_mmio_spte(), but it is not the genuine EPT misconfig
>> since it is caused by shadow page zapped
>
> I mean it must be
>
> if (is_mmio_spte(spte))
> handle_mmio
> if (spte == spte_not_present) /* race, let CPU refault */
> return
> handle EPT misconf
>
The patch already did it as you say :p
if (is_mmio_spte(spte))
return handle_mmio
if (spte_present(spte))
return handle EPT misconfig
return page fault path /*I will fix it, let cpu refault instead*/
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