local_apic_timer_interrupt refers to a static clockevent in
apic.c. Paravirtualized implementations need to check a different
clockevent, so allow customizing the guts of the APIC timer interrupt.
Signed-off-by: Paolo Bonzini <pbonzini@xxxxxxxxxx>
---
arch/x86/include/asm/apic.h | 1 +
arch/x86/include/asm/paravirt.h | 5 +++++
arch/x86/include/asm/paravirt_types.h | 1 +
arch/x86/kernel/apic/apic.c | 2 +-
arch/x86/kernel/paravirt.c | 1 +
5 files changed, 9 insertions(+), 1 deletion(-)
diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h
index 124357773ffa..f6e0bad1cde2 100644
--- a/arch/x86/include/asm/apic.h
+++ b/arch/x86/include/asm/apic.h
@@ -109,6 +109,7 @@ extern void native_apic_wait_icr_idle(void);
extern u32 native_safe_apic_wait_icr_idle(void);
extern void native_apic_icr_write(u32 low, u32 id);
extern u64 native_apic_icr_read(void);
+extern void native_local_apic_timer_interrupt(void);
static inline bool apic_is_x2apic_enabled(void)
{
diff --git a/arch/x86/include/asm/paravirt.h b/arch/x86/include/asm/paravirt.h
index 2970d22d7766..71ec3a73745f 100644
--- a/arch/x86/include/asm/paravirt.h
+++ b/arch/x86/include/asm/paravirt.h
@@ -197,6 +197,11 @@ static inline u64 paravirt_steal_clock(int cpu)
return PVOP_CALL1(u64, pv_time_ops.steal_clock, cpu);
}
+static inline void local_apic_timer_interrupt(void)
+{
+ PVOP_VCALL0(pv_time_ops.local_apic_timer_interrupt);
+}
+
static inline unsigned long long paravirt_read_pmc(int counter)
{
return PVOP_CALL1(u64, pv_cpu_ops.read_pmc, counter);
diff --git a/arch/x86/include/asm/paravirt_types.h b/arch/x86/include/asm/paravirt_types.h
index 7fa9e7740ba3..ea1f27400098 100644
--- a/arch/x86/include/asm/paravirt_types.h
+++ b/arch/x86/include/asm/paravirt_types.h
@@ -96,6 +96,7 @@ struct pv_lazy_ops {
struct pv_time_ops {
unsigned long long (*sched_clock)(void);
unsigned long long (*steal_clock)(int cpu);
+ void (*local_apic_timer_interrupt)(void);
};
struct pv_cpu_ops {
diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c
index cea4fc19e844..5b63bec7d0af 100644
--- a/arch/x86/kernel/apic/apic.c
+++ b/arch/x86/kernel/apic/apic.c
@@ -902,7 +902,7 @@ void setup_secondary_APIC_clock(void)
/*
* The guts of the apic timer interrupt
*/
-static void local_apic_timer_interrupt(void)
+void native_local_apic_timer_interrupt(void)
{
int cpu = smp_processor_id();
struct clock_event_device *evt = &per_cpu(lapic_events, cpu);
diff --git a/arch/x86/kernel/paravirt.c b/arch/x86/kernel/paravirt.c
index ad5bc9578a73..0e056271d714 100644
--- a/arch/x86/kernel/paravirt.c
+++ b/arch/x86/kernel/paravirt.c
@@ -310,6 +310,7 @@ struct pv_init_ops pv_init_ops = {
struct pv_time_ops pv_time_ops = {
.sched_clock = native_sched_clock,
.steal_clock = native_steal_clock,
+ .local_apic_timer_interrupt = native_local_apic_timer_interrupt,
};
__visible struct pv_irq_ops pv_irq_ops = {
--
1.8.3.1
--
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