Messages in this thread | | | Subject | Re: [PATCH] KVM: X86: Fix SMRAM accessing even if VM is shutdown | From | Paolo Bonzini <> | Date | Thu, 8 Feb 2018 11:31:12 +0100 |
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On 08/02/2018 09:57, Xiao Guangrong wrote: >> Maybe it should return RET_PF_EMULATE, which would cause an emulation >> failure and then an exit with KVM_EXIT_INTERNAL_ERROR. > > So the root cause is that a running vCPU accessing the memory whose memslot > is being updated (met the condition KVM_MEMSLOT_INVALID is set on the its > memslot). > > The normal #PF handler breaks KVM_RUN and returns -EFAULT to userspace, > we'd better to make ept-misconfig's handler follow this style as well.
Why return -EFAULT and not attempt emulation (which will fail)?
Paolo
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