Messages in this thread | | | Date | Thu, 11 Sep 2014 16:24:04 +0200 | From | Paolo Bonzini <> | Subject | Re: [PATCH v5 4/7] kvm, mem-hotplug: Reload L1' apic access page on migration in vcpu_enter_guest(). |
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Il 11/09/2014 16:21, Gleb Natapov ha scritto: > As far as I can tell the if that is needed there is: > > if (!is_guest_mode() || !(vmcs12->secondary_vm_exec_control & ECONDARY_EXEC_VIRTUALIZE_APIC_ACCESSES)) > write(PIC_ACCESS_ADDR) > > In other words if L2 shares L1 apic access page then reload, otherwise do nothing.
What if the page being swapped out is L1's APIC access page? We don't run prepare_vmcs12 in that case because it's an L2->L0->L2 entry, so we need to "do something".
Paolo
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