Re: [PATCH v3 6/6] kvm, mem-hotplug: Reload L1's apic access page if it is migrated when L2 is running.

[tangchen]

On 07/26/2014 04:44 AM, Jan Kiszka wrote:
> On 2014-07-23 21:42, Tang Chen wrote:
> > This patch only handle "L1 and L2 vm share one apic access page" situation.
> >
> > When L1 vm is running, if the shared apic access page is migrated, mmu_notifier will
> > request all vcpus to exit to L0, and reload apic access page physical address for
> > all the vcpus' vmcs (which is done by patch 5/6). And when it enters L2 vm, L2's vmcs
> > will be updated in prepare_vmcs02() called by nested_vm_run(). So we need to do
> > nothing.
> >
> > When L2 vm is running, if the shared apic access page is migrated, mmu_notifier will
> > request all vcpus to exit to L0, and reload apic access page physical address for
> > all L2 vmcs. And this patch requests apic access page reload in L2->L1 vmexit.
> Shouldn't this patch come before we allow apic access page migration?
Yes, it should come before patch 5.

Thanks.
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