Avi Kivity wrote:
>>> /*
>>> * Verify that the gpte in the page we've just write
>>> * protected is still there.
>>> */
>>> if (!FNAME(validate_indirect_spte)(vcpu, sptep, sp,
>>> - gw, level - 1)) {
>>> - kvm_release_pfn_clean(pfn);
>>> - return NULL;
>>> - }
>>> + gw, level - 1))
>>> + goto out_error;
>>>
>>>
>> It missed the last mapping check? i only see validate_indirect_spte in
>> 'level> gw->level' loop.
>>
>
> But we check 'level - 1' here, so the final level is included. It is
> the top level that is not checked in the loop (we check it separately,
> above).
>
Yeah, you are right!
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