linux-kernel - [PATCH 2/13] KVM: Move virtualization deactivation from CPU_DEAD state to CPU_DOWN

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Message-Id: <20070219102251.A2C7525016B@il.qumranet.com>
Date:	Mon, 19 Feb 2007 10:22:51 -0000
From:	Avi Kivity <avi@...ranet.com>
To:	kvm-devel@...ts.sourceforge.net
Cc:	linux-kernel@...r.kernel.org, akpm@...l.org, mingo@...e.hu
Subject: [PATCH 2/13] KVM: Move virtualization deactivation from CPU_DEAD
	state to CPU_DOWN_PREPARE

From: Jeremy Katz <katzj@...hat.com>

This gives it more chances of surviving suspend.

Signed-off-by: Jeremy Katz <katzj@...hat.com>
Signed-off-by: Avi Kivity <avi@...ranet.com>

Index: linux-2.6/drivers/kvm/kvm_main.c
===================================================================
--- linux-2.6.orig/drivers/kvm/kvm_main.c
+++ linux-2.6/drivers/kvm/kvm_main.c
@@ -2080,13 +2080,17 @@ static int kvm_cpu_hotplug(struct notifi
 	int cpu = (long)v;
 
 	switch (val) {
-	case CPU_DEAD:
+	case CPU_DOWN_PREPARE:
 	case CPU_UP_CANCELED:
+		printk(KERN_INFO "kvm: disabling virtualization on CPU%d\n",
+		       cpu);
 		decache_vcpus_on_cpu(cpu);
 		smp_call_function_single(cpu, kvm_arch_ops->hardware_disable,
 					 NULL, 0, 1);
 		break;
-	case CPU_UP_PREPARE:
+	case CPU_ONLINE:
+		printk(KERN_INFO "kvm: enabling virtualization on CPU%d\n",
+		       cpu);
 		smp_call_function_single(cpu, kvm_arch_ops->hardware_enable,
 					 NULL, 0, 1);
 		break;
-
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