# HG changeset patch
# User Juergen Gross <juergen.gross@xxxxxxxxxxxxxx>
# Date 1326876456 -3600
# Node ID 88318e850353da840fe70a7a953e1037ef32e2cd
# Parent  15ab61865ecbd146f6ce65fbea5bf49bfd9c6cb1
Allow wake up of offline vcpu via nmi-ipi

On a real machine a cpu disabled via hlt with interrupts disabled can be
reactivated via a nmi ipi. Enable the hypervisor to do this for hvm, too.

Signed-off-by: juergen.gross@xxxxxxxxxxxxxx

diff -r 15ab61865ecb -r 88318e850353 xen/arch/x86/hvm/vlapic.c
--- a/xen/arch/x86/hvm/vlapic.c	Tue Jan 17 12:40:52 2012 +0000
+++ b/xen/arch/x86/hvm/vlapic.c	Wed Jan 18 09:47:36 2012 +0100
@@ -323,7 +323,10 @@ static int vlapic_accept_irq(struct vcpu
 
     case APIC_DM_NMI:
         if ( !test_and_set_bool(v->nmi_pending) )
-            vcpu_kick(v);
+        {
+            clear_bit(_VPF_down, &v->pause_flags);
+            vcpu_wake(v);
+        }
         break;
 
     case APIC_DM_INIT: