Messages in this thread | | | Subject | Re: [PATCH v5 4/4] KVM: async_pf: Let host know whether the guest support delivery async_pf as #PF vmexit | From | Paolo Bonzini <> | Date | Tue, 27 Jun 2017 15:19:41 +0200 |
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On 27/06/2017 03:47, Wanpeng Li wrote: > - wrmsrl(MSR_KVM_ASYNC_PF_EN, pa | KVM_ASYNC_PF_ENABLED); > + pa |= KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT | KVM_ASYNC_PF_ENABLED; > + wrmsr_safe(MSR_KVM_ASYNC_PF_EN, pa & 0xffffffff, pa >> 32); > __this_cpu_write(apf_reason.enabled, 1);
Better:
pa |= KVM_ASYNC_PF_ENABLED;
/* Async page fault support for L1 hypervisor is optional. */ if (wrmsr_safe(MSR_KVM_ASYNC_PF_EN, pa | KVM_ASYNC_PF_DELIVERY_AS_PF_VMEXIT) < 0) wrmsrl(MSR_KVM_ASYNC_PF_EN, pa);
Thanks,
Paolo
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