On Thu, Jul 03, 2014 at 09:17:59AM +0800, Tang Chen wrote: > Hi Gleb, > > On 07/02/2014 05:00 PM, Tang Chen wrote: > >Hi Gleb, Marcelo, > > > >Please help to review this patch-set. > > > >NOTE: This patch-set doesn't work properly. > > > > > >ept identity pagetable and apic access page in kvm are pinned in memory. > >As a result, they cannot be migrated/hot-removed. > > > >But actually they don't need to be pinned in memory. > > > >This patch-set introduces two new vcpu requests: KVM_REQ_MIGRATE_EPT and KVM_REQ_MIGRATE_APIC. > >These two requests are made when the two pages are migrated by the mmu_notifier > >to reset the related variable to unusable value. And will also be made when > >ept violation happens to reset new pages. > > > > > >[Known problem] > >After this patch-set applied, the two pages can be migrated/hot-removed. > >But after migrating apic access page, the guest died. > > > >The host physical address of apic access page is stored in VMCS. I reset > >it to 0 to stop guest from accessing it when it is unmapped by > >kvm_mmu_notifier_invalidate_page(). And reset it to new page's host physical > >address in tdp_page_fault(). But it seems that guest will access apic page > >directly by the host physical address. > > Would you please to give some advice about this problem ? > I haven't reviewed third patch yet, will do ASAP. -- Gleb. -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
