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| author | Avi Kivity <avi@redhat.com> | 2010-12-16 12:16:34 +0200 |
|---|---|---|
| committer | Avi Kivity <avi@redhat.com> | 2010-12-16 12:39:31 +0200 |
| commit | 3e26f23091da06d02fa62da14c95f3688d27857c (patch) | |
| tree | 17ee88442a9a45a86a8bd8b69944a24ed041244a /arch | |
| parent | 73c1160ce377d8fc6d84cb630ebf9658808bec49 (diff) | |
| download | linux-3e26f23091da06d02fa62da14c95f3688d27857c.tar.gz linux-3e26f23091da06d02fa62da14c95f3688d27857c.tar.bz2 linux-3e26f23091da06d02fa62da14c95f3688d27857c.zip | |
KVM: Fix preemption counter leak in kvm_timer_init()
Based on a patch from Thomas Meyer.
Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch')
| -rw-r--r-- | arch/x86/kvm/x86.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c index e3abd84750c7..b989e1f1e5d3 100644 --- a/arch/x86/kvm/x86.c +++ b/arch/x86/kvm/x86.c @@ -4564,9 +4564,11 @@ static void kvm_timer_init(void) #ifdef CONFIG_CPU_FREQ struct cpufreq_policy policy; memset(&policy, 0, sizeof(policy)); - cpufreq_get_policy(&policy, get_cpu()); + cpu = get_cpu(); + cpufreq_get_policy(&policy, cpu); if (policy.cpuinfo.max_freq) max_tsc_khz = policy.cpuinfo.max_freq; + put_cpu(); #endif cpufreq_register_notifier(&kvmclock_cpufreq_notifier_block, CPUFREQ_TRANSITION_NOTIFIER); |