From: Liu, Jinsong <jinsong.liu@intel.com>
Date: Sun, 9 Sep 2012 22:55:39 +0000 (+0800)
Subject: KVM: Depend on HIGH_RES_TIMERS
X-Git-Url: http://drtracing.org/?a=commitdiff_plain;h=92b5265d38f6a4d33e9d43974f176f18547687d6;p=deliverable%2Flinux.git

KVM: Depend on HIGH_RES_TIMERS

KVM lapic timer and tsc deadline timer based on hrtimer,
setting a leftmost node to rb tree and then do hrtimer reprogram.
If hrtimer not configured as high resolution, hrtimer_enqueue_reprogram
do nothing and then make kvm lapic timer and tsc deadline timer fail.

Signed-off-by: Liu, Jinsong <jinsong.liu@intel.com>
Signed-off-by: Avi Kivity <avi@redhat.com>
---

diff --git a/arch/x86/kvm/Kconfig b/arch/x86/kvm/Kconfig
index 45c044f0fff7..586f00059805 100644
--- a/arch/x86/kvm/Kconfig
+++ b/arch/x86/kvm/Kconfig
@@ -20,6 +20,7 @@ if VIRTUALIZATION
 config KVM
 	tristate "Kernel-based Virtual Machine (KVM) support"
 	depends on HAVE_KVM
+	depends on HIGH_RES_TIMERS
 	# for device assignment:
 	depends on PCI
 	# for TASKSTATS/TASK_DELAY_ACCT: