Re: [PATCH 0/4] KVM: nVMX: prepare_vmcs02 optimizations

From: Paolo Bonzini
Date: Mon Jan 01 2018 - 04:36:59 EST


On 28/12/2017 09:39, Wanpeng Li wrote:
> 2017-12-27 22:28 GMT+08:00 Paolo Bonzini <pbonzini@xxxxxxxxxx>:
>> On 25/12/2017 11:08, Wanpeng Li wrote:
>>>> I observe L1(latest kvm/queue) panic and L0(latest kvm/queue)
>>>> calltrace, I'm not sure whether it is caused by this patchset.
>>> It can be reproduced steadily by running kvm-unit-tests in L1.
>>
>> It works here, can you show the L0 call trace and/or bisect it?
>
> L0 call trace has already been posted here.
> https://lkml.org/lkml/2017/12/25/53 In addition, the splatting is
> still there after I revert the last 9 nVMX optimization patches in
> kvm/queue. So it is not caused by this patchset. :)

Hmm, maybe you're using "-cpu host,+umip"? I'll check when I get back
to work tomorrow.

Paolo