Messages in this thread Patch in this message | | | Date | Fri, 09 Oct 2009 16:08:53 -0700 | From | Greg KH <> | Subject | [patch 17/26] KVM: VMX: flush TLB with INVEPT on cpu migration |
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2.6.31-stable review patch. If anyone has any objections, please let us know.
------------------ From: Marcelo Tosatti <mtosatti@redhat.com>
commit eb5109e311b5152c0614a28d7d615d087f268f19 upstream.
It is possible that stale EPTP-tagged mappings are used, if a vcpu migrates to a different pcpu.
Set KVM_REQ_TLB_FLUSH in vmx_vcpu_load, when switching pcpus, which will invalidate both VPID and EPT mappings on the next vm-entry.
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
--- arch/x86/kvm/vmx.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -661,7 +661,7 @@ static void vmx_vcpu_load(struct kvm_vcp if (vcpu->cpu != cpu) { vcpu_clear(vmx); kvm_migrate_timers(vcpu); - vpid_sync_vcpu_all(vmx); + set_bit(KVM_REQ_TLB_FLUSH, &vcpu->requests); local_irq_disable(); list_add(&vmx->local_vcpus_link, &per_cpu(vcpus_on_cpu, cpu));
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