linux-kernel - [RFC PATCH v1 10/70] x86, kvm:

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Date:	Tue, 22 Jul 2014 21:58:46 -0400
From:	"Chen, Gong" <gong.chen@...ux.intel.com>
To:	linux-kernel@...r.kernel.org
Cc:	mingo@...nel.org, tglx@...utronix.de, paulus@...ba.org,
	benh@...nel.crashing.org, tony.luck@...el.com, hpa@...or.com,
	jkosina@...e.cz, rafael.j.wysocki@...el.com, bp@...en8.de,
	linux@....linux.org.uk, ralf@...ux-mips.org,
	schwidefsky@...ibm.com, davem@...emloft.net,
	viro@...iv.linux.org.uk, fweisbec@...il.com, cl@...ux.com,
	akpm@...ux-foundation.org, axboe@...nel.dk,
	JBottomley@...allels.com, neilb@...e.de,
	christoffer.dall@...aro.org, rostedt@...dmis.org, rric@...nel.org,
	gregkh@...uxfoundation.org, mhocko@...e.cz, david@...morbit.com,
	"Chen, Gong" <gong.chen@...ux.intel.com>
Subject: [RFC PATCH v1 10/70] x86, kvm: _FROZEN Cleanup

Remove XXX_FROZEN state from kvm.

Signed-off-by: Chen, Gong <gong.chen@...ux.intel.com>
---
 arch/x86/kernel/kvm.c | 9 +++++----
 1 file changed, 5 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c
index 3dd8e2c..22d472b 100644
--- a/arch/x86/kernel/kvm.c
+++ b/arch/x86/kernel/kvm.c
@@ -442,19 +442,20 @@ static int kvm_cpu_notify(struct notifier_block *self, unsigned long action,
 			  void *hcpu)
 {
 	int cpu = (unsigned long)hcpu;
-	switch (action) {
+	switch (action & ~CPU_TASKS_FROZEN) {
 	case CPU_ONLINE:
-	case CPU_DOWN_FAILED:
-	case CPU_ONLINE_FROZEN:
 		smp_call_function_single(cpu, kvm_guest_cpu_online, NULL, 0);
 		break;
 	case CPU_DOWN_PREPARE:
-	case CPU_DOWN_PREPARE_FROZEN:
 		smp_call_function_single(cpu, kvm_guest_cpu_offline, NULL, 1);
 		break;
 	default:
 		break;
 	}
+
+	if (action == CPU_DOWN_FAILED)
+		smp_call_function_single(cpu, kvm_guest_cpu_online, NULL, 0);
+
 	return NOTIFY_OK;
 }
 
-- 
2.0.0.rc2

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