releases/2.6.32.3/kvm-lapic-make-sure-irr-bitmap-is-scanned-after-vm-load.patch

   1 From 6e24a6eff4571002cd48b99a2b92dc829ce39cb9 Mon Sep 17 00:00:00 2001
   2 From: Marcelo Tosatti <mtosatti@redhat.com>
   3 Date: Mon, 14 Dec 2009 17:37:35 -0200
   4 Subject: KVM: LAPIC: make sure IRR bitmap is scanned after vm load
   5
   6 From: Marcelo Tosatti <mtosatti@redhat.com>
   7
   8 commit 6e24a6eff4571002cd48b99a2b92dc829ce39cb9 upstream.
   9
  10 The vcpus are initialized with irr_pending set to false, but
  11 loading the LAPIC registers with pending IRR fails to reset
  12 the irr_pending variable.
  13
  14 Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>
  15 Signed-off-by: Avi Kivity <avi@redhat.com>
  16 Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
  17
  18 ---
  19  arch/x86/kvm/lapic.c |    1 +
  20  1 file changed, 1 insertion(+)
  21
  22 --- a/arch/x86/kvm/lapic.c
  23 +++ b/arch/x86/kvm/lapic.c
  24 @@ -1156,6 +1156,7 @@ void kvm_apic_post_state_restore(struct
  25         hrtimer_cancel(&apic->lapic_timer.timer);
  26         update_divide_count(apic);
  27         start_apic_timer(apic);
  28 +       apic->irr_pending = true;
  29  }
  30
  31  void __kvm_migrate_apic_timer(struct kvm_vcpu *vcpu)