[PATCH 36/36] x86: KVM guest: kvm_get_tsc_khz: return khz, not lpj

From: Avi Kivity
Date: Sun Dec 14 2008 - 03:16:57 EST


From: Eduardo Habkost <ehabkost@xxxxxxxxxx>

kvm_get_tsc_khz() currently returns the previously-calculated preset_lpj
value, but it is in loops-per-jiffy, not kHz. The current code works
correctly only when HZ=1000.

Signed-off-by: Eduardo Habkost <ehabkost@xxxxxxxxxx>
Signed-off-by: Avi Kivity <avi@xxxxxxxxxx>
---
arch/x86/kernel/kvmclock.c | 8 ++++----
1 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/arch/x86/kernel/kvmclock.c b/arch/x86/kernel/kvmclock.c
index b38e801..652fce6 100644
--- a/arch/x86/kernel/kvmclock.c
+++ b/arch/x86/kernel/kvmclock.c
@@ -89,17 +89,17 @@ static cycle_t kvm_clock_read(void)
*/
static unsigned long kvm_get_tsc_khz(void)
{
- return preset_lpj;
+ struct pvclock_vcpu_time_info *src;
+ src = &per_cpu(hv_clock, 0);
+ return pvclock_tsc_khz(src);
}

static void kvm_get_preset_lpj(void)
{
- struct pvclock_vcpu_time_info *src;
unsigned long khz;
u64 lpj;

- src = &per_cpu(hv_clock, 0);
- khz = pvclock_tsc_khz(src);
+ khz = kvm_get_tsc_khz();

lpj = ((u64)khz * 1000);
do_div(lpj, HZ);
--
1.6.0.3

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