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

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2017-08-11 14:23 GMT+08:00 David Hildenbrand <david@xxxxxxxxxx>:
> On 11.08.2017 08:09, Wanpeng Li wrote:
>> 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
>>
>
> Hi Wanpeng,
>
> thanks for testing. As far as I can see kvm/queue contains v1 of this
> patch, which has a BUG fixed in this series.
>
> Did you try with this patch here or with kvm/queue?

Yeah, the v2 works. :)

Regards,
Wanpeng Li



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