Re: [PATCH v2 0/2] KVM: VMX: require EPTP WB (write-back) support

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2017-08-11 10:43 GMT+08:00 Wanpeng Li <kernellwp@xxxxxxxxx>:
> 2017-08-11 9:20 GMT+08:00 Wanpeng Li <kernellwp@xxxxxxxxx>:
>> 2017-08-11 7:09 GMT+08:00 Wanpeng Li <kernellwp@xxxxxxxxx>:
>>> 2017-08-11 5:15 GMT+08:00 David Hildenbrand <david@xxxxxxxxxx>:
>>>> This version should no longer result in a panic :(
>>>>
>>>> (note to self: always retest after tiny changes)
>>>>
>>>> v1 -> v2:
>>>> - fix typo (invalid guest page-walk length)
>>>>
>>>> David Hildenbrand (2):
>>>>   KVM: VMX: cleanup EPTP definitions
>>>>   KVM: VMX: always require WB memory type for EPT
>>>
>>> Hmm, I saw these patches in kvm/queue, and linux guest stuck during
>>> boot due to patch 1/2.
>>
>> Sorry, I make a mistake. The commit which should be blamed is this
>> one: https://git.kernel.org/pub/scm/virt/kvm/kvm.git/commit/?h=queue&id=c016004494b0914205e3c4aa23ea92cfb57ba6ee
>
> After several rounds testing, it is still patch 1/2. Please have a try, David.

I found that both this patch 1/2 and the Brijesh's patch have issues.
I just posted a patch to fix Brijesh's commit since his commit has
already been merged in kvm/next branch.

Regards,
Wanpeng Li



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