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-rw-r--r--arch/ia64/include/asm/kvm_host.h1
-rw-r--r--arch/ia64/kvm/kvm-ia64.c20
-rw-r--r--arch/powerpc/include/asm/kvm_host.h6
-rw-r--r--arch/powerpc/kvm/powerpc.c21
-rw-r--r--arch/s390/kvm/kvm-s390.c8
-rw-r--r--arch/x86/kvm/x86.c16
-rw-r--r--include/linux/kvm_host.h9
-rw-r--r--virt/kvm/kvm_main.c22
8 files changed, 59 insertions, 44 deletions
diff --git a/arch/ia64/include/asm/kvm_host.h b/arch/ia64/include/asm/kvm_host.h
index e35b3a84a40b..c4b4bac3d09e 100644
--- a/arch/ia64/include/asm/kvm_host.h
+++ b/arch/ia64/include/asm/kvm_host.h
@@ -365,6 +365,7 @@ struct thash_cb {
};
struct kvm_vcpu_stat {
+ u32 halt_wakeup;
};
struct kvm_vcpu_arch {
diff --git a/arch/ia64/kvm/kvm-ia64.c b/arch/ia64/kvm/kvm-ia64.c
index f5104b7c52cd..9d80ff8d9eff 100644
--- a/arch/ia64/kvm/kvm-ia64.c
+++ b/arch/ia64/kvm/kvm-ia64.c
@@ -1872,21 +1872,6 @@ void kvm_arch_hardware_unsetup(void)
{
}
-void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
-{
- int me;
- int cpu = vcpu->cpu;
-
- if (waitqueue_active(&vcpu->wq))
- wake_up_interruptible(&vcpu->wq);
-
- me = get_cpu();
- if (cpu != me && (unsigned) cpu < nr_cpu_ids && cpu_online(cpu))
- if (!test_and_set_bit(KVM_REQ_KICK, &vcpu->requests))
- smp_send_reschedule(cpu);
- put_cpu();
-}
-
int kvm_apic_set_irq(struct kvm_vcpu *vcpu, struct kvm_lapic_irq *irq)
{
return __apic_accept_irq(vcpu, irq->vector);
@@ -1956,6 +1941,11 @@ int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
(kvm_highest_pending_irq(vcpu) != -1);
}
+int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
+{
+ return (!test_and_set_bit(KVM_REQ_KICK, &vcpu->requests));
+}
+
int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
struct kvm_mp_state *mp_state)
{
diff --git a/arch/powerpc/include/asm/kvm_host.h b/arch/powerpc/include/asm/kvm_host.h
index 52eb9c1f4fe0..889383735e73 100644
--- a/arch/powerpc/include/asm/kvm_host.h
+++ b/arch/powerpc/include/asm/kvm_host.h
@@ -498,4 +498,10 @@ struct kvm_vcpu_arch {
#define KVM_MMIO_REG_QPR 0x0040
#define KVM_MMIO_REG_FQPR 0x0060
+#define __KVM_HAVE_ARCH_VCPU_GET_WQ 1
+static inline wait_queue_head *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu)
+{
+ return vcpu->arch.wqp;
+}
+
#endif /* __POWERPC_KVM_HOST_H__ */
diff --git a/arch/powerpc/kvm/powerpc.c b/arch/powerpc/kvm/powerpc.c
index 00d7e345b3fe..b5e9046462fd 100644
--- a/arch/powerpc/kvm/powerpc.c
+++ b/arch/powerpc/kvm/powerpc.c
@@ -43,6 +43,11 @@ int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
v->requests;
}
+int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
+{
+ return 1;
+}
+
int kvmppc_kvm_pv(struct kvm_vcpu *vcpu)
{
int nr = kvmppc_get_gpr(vcpu, 11);
@@ -588,21 +593,6 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
return r;
}
-void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
-{
- int me;
- int cpu = vcpu->cpu;
-
- me = get_cpu();
- if (waitqueue_active(vcpu->arch.wqp)) {
- wake_up_interruptible(vcpu->arch.wqp);
- vcpu->stat.halt_wakeup++;
- } else if (cpu != me && cpu != -1) {
- smp_send_reschedule(vcpu->cpu);
- }
- put_cpu();
-}
-
int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
{
if (irq->irq == KVM_INTERRUPT_UNSET) {
@@ -611,6 +601,7 @@ int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq)
}
kvmppc_core_queue_external(vcpu, irq);
+
kvm_vcpu_kick(vcpu);
return 0;
diff --git a/arch/s390/kvm/kvm-s390.c b/arch/s390/kvm/kvm-s390.c
index 217ce44395a4..d30c8350b949 100644
--- a/arch/s390/kvm/kvm-s390.c
+++ b/arch/s390/kvm/kvm-s390.c
@@ -423,6 +423,14 @@ int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
return 0;
}
+int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
+{
+ /* kvm common code refers to this, but never calls it */
+ BUG();
+ return 0;
+}
+
+
static int kvm_arch_vcpu_ioctl_initial_reset(struct kvm_vcpu *vcpu)
{
kvm_s390_vcpu_initial_reset(vcpu);
diff --git a/arch/x86/kvm/x86.c b/arch/x86/kvm/x86.c
index 4044ce0bf7c1..511031dcb9cc 100644
--- a/arch/x86/kvm/x86.c
+++ b/arch/x86/kvm/x86.c
@@ -6403,21 +6403,9 @@ int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu)
kvm_cpu_has_interrupt(vcpu));
}
-void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
+int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu)
{
- int me;
- int cpu = vcpu->cpu;
-
- if (waitqueue_active(&vcpu->wq)) {
- wake_up_interruptible(&vcpu->wq);
- ++vcpu->stat.halt_wakeup;
- }
-
- me = get_cpu();
- if (cpu != me && (unsigned)cpu < nr_cpu_ids && cpu_online(cpu))
- if (kvm_vcpu_exiting_guest_mode(vcpu) == IN_GUEST_MODE)
- smp_send_reschedule(cpu);
- put_cpu();
+ return kvm_vcpu_exiting_guest_mode(vcpu) == IN_GUEST_MODE;
}
int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu)
diff --git a/include/linux/kvm_host.h b/include/linux/kvm_host.h
index 3a2cea616283..5b624e1ff814 100644
--- a/include/linux/kvm_host.h
+++ b/include/linux/kvm_host.h
@@ -439,6 +439,7 @@ void mark_page_dirty_in_slot(struct kvm *kvm, struct kvm_memory_slot *memslot,
gfn_t gfn);
void kvm_vcpu_block(struct kvm_vcpu *vcpu);
+void kvm_vcpu_kick(struct kvm_vcpu *vcpu);
void kvm_vcpu_on_spin(struct kvm_vcpu *vcpu);
void kvm_resched(struct kvm_vcpu *vcpu);
void kvm_load_guest_fpu(struct kvm_vcpu *vcpu);
@@ -507,6 +508,7 @@ int kvm_arch_hardware_setup(void);
void kvm_arch_hardware_unsetup(void);
void kvm_arch_check_processor_compat(void *rtn);
int kvm_arch_vcpu_runnable(struct kvm_vcpu *vcpu);
+int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu);
void kvm_free_physmem(struct kvm *kvm);
@@ -522,6 +524,13 @@ static inline void kvm_arch_free_vm(struct kvm *kvm)
}
#endif
+#ifndef __KVM_HAVE_ARCH_VCPU_GET_WQ
+static inline wait_queue_head_t *kvm_arch_vcpu_wq(struct kvm_vcpu *vcpu)
+{
+ return &vcpu->wq;
+}
+#endif
+
int kvm_arch_init_vm(struct kvm *kvm, unsigned long type);
void kvm_arch_destroy_vm(struct kvm *kvm);
void kvm_free_all_assigned_devices(struct kvm *kvm);
diff --git a/virt/kvm/kvm_main.c b/virt/kvm/kvm_main.c
index a9565e240636..7149a2e65524 100644
--- a/virt/kvm/kvm_main.c
+++ b/virt/kvm/kvm_main.c
@@ -1514,6 +1514,28 @@ void kvm_vcpu_block(struct kvm_vcpu *vcpu)
finish_wait(&vcpu->wq, &wait);
}
+/*
+ * Kick a sleeping VCPU, or a guest VCPU in guest mode, into host kernel mode.
+ */
+void kvm_vcpu_kick(struct kvm_vcpu *vcpu)
+{
+ int me;
+ int cpu = vcpu->cpu;
+ wait_queue_head_t *wqp;
+
+ wqp = kvm_arch_vcpu_wq(vcpu);
+ if (waitqueue_active(wqp)) {
+ wake_up_interruptible(wqp);
+ ++vcpu->stat.halt_wakeup;
+ }
+
+ me = get_cpu();
+ if (cpu != me && (unsigned)cpu < nr_cpu_ids && cpu_online(cpu))
+ if (kvm_arch_vcpu_should_kick(vcpu))
+ smp_send_reschedule(cpu);
+ put_cpu();
+}
+
void kvm_resched(struct kvm_vcpu *vcpu)
{
if (!need_resched())
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