For tsc deadline mode, when we shut down clockevent we should disarm
local-APIC timer like count-down mode.
Signed-off-by: wang, biao <biao.w...@intel.com>
Signed-off-by: Zhang Di <di.zh...@intel.com>
---
arch/x86/kernel/apic/apic.c | 4 ++++
1 files changed, 4 insertions(+), 0 deletions(-)
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index 7f26c9a..85889ba 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -512,6 +512,10 @@ static void lapic_timer_setup(enum clock_event_mode mode,
v |= (APIC_LVT_MASKED | LOCAL_TIMER_VECTOR);
apic_write(APIC_LVTT, v);
apic_write(APIC_TMICT, 0);
+
+ /*disarm timer in deadline mode*/
+ if (boot_cpu_has(X86_FEATURE_TSC_DEADLINE_TIMER))
+ wrmsrl(MSR_IA32_TSC_DEADLINE, 0);
break;
case CLOCK_EVT_MODE_RESUME:
/* Nothing to do here */
--
1.7.6
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