From: Lai Jiangshan <laijs@cn.fujitsu.com>
To: Avi Kivity <avi@redhat.com>,
Marcelo Tosatti <mtosatti@redhat.com>,
LKML <linux-kernel@vger.kernel.org>,
kvm@vger.kernel.org
Subject: [PATCH] kvm: do not need hardware_disable when CPU_UP_CANCELED
Date: Sat, 17 Apr 2010 17:00:19 +0800 [thread overview]
Message-ID: <4BC978A3.8010502@cn.fujitsu.com> (raw)
When CPU_UP_CANCELED, hardware_enable() has not been called at the CPU
which is going up because raw_notifier_call_chain(CPU_ONLINE)
has not been called for this cpu.
Signed-off-by: Lai Jiangshan <laijs@cn.fujitsu.com>
---
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index 5a0cd19..b03f863 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1921,11 +1921,6 @@ static int kvm_cpu_hotplug(struct notifier_block *notifier, unsigned long val,
cpu);
hardware_disable(NULL);
break;
- case CPU_UP_CANCELED:
- printk(KERN_INFO "kvm: disabling virtualization on CPU%d\n",
- cpu);
- smp_call_function_single(cpu, hardware_disable, NULL, 1);
- break;
case CPU_ONLINE:
printk(KERN_INFO "kvm: enabling virtualization on CPU%d\n",
cpu);
next reply other threads:[~2010-04-17 9:00 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-04-17 9:00 Lai Jiangshan [this message]
2010-04-21 8:41 ` [PATCH] kvm: do not need hardware_disable when CPU_UP_CANCELED Avi Kivity
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