A subsequent change to KVM will add support for additional power states.
Store the MP state by value rather than keeping track of it as a
boolean.
No functional change intended.
Signed-off-by: Oliver Upton <oupton@xxxxxxxxxx>
---
arch/arm64/include/asm/kvm_host.h | 5 +++--
arch/arm64/kvm/arm.c | 22 ++++++++++++----------
arch/arm64/kvm/psci.c | 10 +++++-----
3 files changed, 20 insertions(+), 17 deletions(-)
diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index cacc9efd2e70..3e8bfecaa95b 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -350,8 +350,8 @@ struct kvm_vcpu_arch {
u32 mdscr_el1;
} guest_debug_preserved;
- /* vcpu power-off state */
- bool power_off;
+ /* vcpu power state */
+ u32 mp_state;
/* Don't run the guest (internal implementation need) */
bool pause;
@@ -800,5 +800,6 @@ static inline void kvm_hyp_reserve(void) { }
#endif
void kvm_arm_vcpu_power_off(struct kvm_vcpu *vcpu);
+bool kvm_arm_vcpu_powered_off(struct kvm_vcpu *vcpu);
#endif /* __ARM64_KVM_HOST_H__ */
diff --git a/arch/arm64/kvm/arm.c b/arch/arm64/kvm/arm.c
index 07c6a176cdcc..b4987b891f38 100644
--- a/arch/arm64/kvm/arm.c
+++ b/arch/arm64/kvm/arm.c
@@ -428,18 +428,20 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
void kvm_arm_vcpu_power_off(struct kvm_vcpu *vcpu)
{
- vcpu->arch.power_off = true;
+ vcpu->arch.mp_state = KVM_MP_STATE_STOPPED;
kvm_make_request(KVM_REQ_SLEEP, vcpu);
kvm_vcpu_kick(vcpu);
}
+bool kvm_arm_vcpu_powered_off(struct kvm_vcpu *vcpu)
+{
+ return vcpu->arch.mp_state == KVM_MP_STATE_STOPPED;
+}
+
int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
struct kvm_mp_state *mp_state)
{
- if (vcpu->arch.power_off)
- mp_state->mp_state = KVM_MP_STATE_STOPPED;
- else
- mp_state->mp_state = KVM_MP_STATE_RUNNABLE;
+ mp_state->mp_state = vcpu->arch.mp_state;
return 0;
}
@@ -451,7 +453,7 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
switch (mp_state->mp_state) {
case KVM_MP_STATE_RUNNABLE:
- vcpu->arch.power_off = false;
+ vcpu->arch.mp_state = mp_state->mp_state;
break;
case KVM_MP_STATE_STOPPED:
kvm_arm_vcpu_power_off(vcpu);
@@ -474,7 +476,7 @@ int kvm_arch_vcpu_runnable(struct kvm_vcpu *v)
{
bool irq_lines = *vcpu_hcr(v) & (HCR_VI | HCR_VF);
return ((irq_lines || kvm_vgic_vcpu_pending_irq(v))
- && !v->arch.power_off && !v->arch.pause);
+ && !kvm_arm_vcpu_powered_off(v) && !v->arch.pause);
}
bool kvm_arch_vcpu_in_kernel(struct kvm_vcpu *vcpu)
@@ -668,10 +670,10 @@ static void vcpu_req_sleep(struct kvm_vcpu *vcpu)
struct rcuwait *wait = kvm_arch_vcpu_get_wait(vcpu);
rcuwait_wait_event(wait,
- (!vcpu->arch.power_off) &&(!vcpu->arch.pause),
+ (!kvm_arm_vcpu_powered_off(vcpu)) && (!vcpu->arch.pause),
TASK_INTERRUPTIBLE);
- if (vcpu->arch.power_off || vcpu->arch.pause) {
+ if (kvm_arm_vcpu_powered_off(vcpu) || vcpu->arch.pause) {
/* Awaken to handle a signal, request we sleep again later. */
kvm_make_request(KVM_REQ_SLEEP, vcpu);
}
@@ -1181,7 +1183,7 @@ static int kvm_arch_vcpu_ioctl_vcpu_init(struct kvm_vcpu *vcpu,
if (test_bit(KVM_ARM_VCPU_POWER_OFF, vcpu->arch.features))
kvm_arm_vcpu_power_off(vcpu);
else
- vcpu->arch.power_off = false;
+ vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
return 0;
}
diff --git a/arch/arm64/kvm/psci.c b/arch/arm64/kvm/psci.c
index e3f93b7f8d38..77a00913cdfd 100644
--- a/arch/arm64/kvm/psci.c
+++ b/arch/arm64/kvm/psci.c
@@ -97,7 +97,7 @@ static unsigned long kvm_psci_vcpu_on(struct kvm_vcpu *source_vcpu)
*/
if (!vcpu)
return PSCI_RET_INVALID_PARAMS;
- if (!vcpu->arch.power_off) {
+ if (!kvm_arm_vcpu_powered_off(vcpu)) {
if (kvm_psci_version(source_vcpu) != KVM_ARM_PSCI_0_1)
return PSCI_RET_ALREADY_ON;
else
@@ -122,11 +122,11 @@ static unsigned long kvm_psci_vcpu_on(struct kvm_vcpu *source_vcpu)
/*
* Make sure the reset request is observed if the change to
- * power_off is observed.
+ * mp_state is observed.
*/
smp_wmb();
- vcpu->arch.power_off = false;
+ vcpu->arch.mp_state = KVM_MP_STATE_RUNNABLE;
kvm_vcpu_wake_up(vcpu);
return PSCI_RET_SUCCESS;
@@ -164,7 +164,7 @@ static unsigned long kvm_psci_vcpu_affinity_info(struct kvm_vcpu *vcpu)
mpidr = kvm_vcpu_get_mpidr_aff(tmp);
if ((mpidr & target_affinity_mask) == target_affinity) {
matching_cpus++;
- if (!tmp->arch.power_off)
+ if (!kvm_arm_vcpu_powered_off(tmp))
return PSCI_0_2_AFFINITY_LEVEL_ON;
}
}
@@ -190,7 +190,7 @@ static void kvm_prepare_system_event(struct kvm_vcpu *vcpu, u32 type)
* re-initialized.
*/
kvm_for_each_vcpu(i, tmp, vcpu->kvm)
- tmp->arch.power_off = true;
+ tmp->arch.mp_state = KVM_MP_STATE_STOPPED;
kvm_make_all_cpus_request(vcpu->kvm, KVM_REQ_SLEEP);
memset(&vcpu->run->system_event, 0, sizeof(vcpu->run->system_event));
--
2.35.1.473.g83b2b277ed-goog
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