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 ? Thanks. -- 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
