diff --git a/arch/x86/include/asm/apic.h b/arch/x86/include/asm/apic.h index f5aaf6c83222299691364258118b0dd41b22fac7..a5a0bcfde76a5802c0125d225ab7b5ec43ad2e7b 100644 --- a/arch/x86/include/asm/apic.h +++ b/arch/x86/include/asm/apic.h @@ -196,7 +196,7 @@ static inline void native_apic_msr_write(u32 reg, u32 v) static inline void native_apic_msr_eoi_write(u32 reg, u32 v) { - wrmsr(APIC_BASE_MSR + (APIC_EOI >> 4), APIC_EOI_ACK, 0); + wrmsr_notrace(APIC_BASE_MSR + (APIC_EOI >> 4), APIC_EOI_ACK, 0); } static inline u32 native_apic_msr_read(u32 reg) @@ -332,6 +332,7 @@ struct apic { * on write for EOI. */ void (*eoi_write)(u32 reg, u32 v); + void (*native_eoi_write)(u32 reg, u32 v); u64 (*icr_read)(void); void (*icr_write)(u32 low, u32 high); void (*wait_icr_idle)(void); diff --git a/arch/x86/kernel/apic/apic.c b/arch/x86/kernel/apic/apic.c index 88c657b057e223eb0eaccdac699aa91505638129..2686894350a4974764ea6a78d3b8f08b960b456a 100644 --- a/arch/x86/kernel/apic/apic.c +++ b/arch/x86/kernel/apic/apic.c @@ -2263,6 +2263,7 @@ void __init apic_set_eoi_write(void (*eoi_write)(u32 reg, u32 v)) for (drv = __apicdrivers; drv < __apicdrivers_end; drv++) { /* Should happen once for each apic */ WARN_ON((*drv)->eoi_write == eoi_write); + (*drv)->native_eoi_write = (*drv)->eoi_write; (*drv)->eoi_write = eoi_write; } } diff --git a/arch/x86/kernel/kvm.c b/arch/x86/kernel/kvm.c index edbbfc854e3998a038ffd8d94173dd4a2c9dfeee..aad52f1b0f9f6fcfcb70748b0ceb6c0262d0c62a 100644 --- a/arch/x86/kernel/kvm.c +++ b/arch/x86/kernel/kvm.c @@ -308,7 +308,7 @@ static void kvm_register_steal_time(void) static DEFINE_PER_CPU(unsigned long, kvm_apic_eoi) = KVM_PV_EOI_DISABLED; -static void kvm_guest_apic_eoi_write(u32 reg, u32 val) +static notrace void kvm_guest_apic_eoi_write(u32 reg, u32 val) { /** * This relies on __test_and_clear_bit to modify the memory @@ -319,7 +319,7 @@ static void kvm_guest_apic_eoi_write(u32 reg, u32 val) */ if (__test_and_clear_bit(KVM_PV_EOI_BIT, this_cpu_ptr(&kvm_apic_eoi))) return; - apic_write(APIC_EOI, APIC_EOI_ACK); + apic->native_eoi_write(APIC_EOI, APIC_EOI_ACK); } static void kvm_guest_cpu_init(void) diff --git a/arch/x86/kernel/smp.c b/arch/x86/kernel/smp.c index c00cb64bc0a12e5f6f36c37215b05a3afd178db9..68f8cc222f255aa1cf5266e2d84d7ceeb2417977 100644 --- a/arch/x86/kernel/smp.c +++ b/arch/x86/kernel/smp.c @@ -261,10 +261,8 @@ static inline void __smp_reschedule_interrupt(void) __visible void smp_reschedule_interrupt(struct pt_regs *regs) { - irq_enter(); ack_APIC_irq(); __smp_reschedule_interrupt(); - irq_exit(); /* * KVM uses this interrupt to force a cpu out of guest mode */