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Subject[PATCH v3 1/4] KVM: arm/arm64: rename pause into power_off
Date
The kvm_vcpu_arch pause field is renamed into power_off to prepare
for the introduction of a new pause field. Also vcpu_pause is renamed
into vcpu_sleep since we will sleep until both power_off and pause are
false.

Signed-off-by: Eric Auger <eric.auger@linaro.org>
Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org>

---

v1 -> v2:
- rename pause in kvm_arch_vcpu_ioctl_[set,get]_mpstate
- rename vcpu_pause into vcpu_sleep
---
arch/arm/include/asm/kvm_host.h | 4 ++--
arch/arm/kvm/arm.c | 20 ++++++++++----------
arch/arm/kvm/psci.c | 10 +++++-----
arch/arm64/include/asm/kvm_host.h | 4 ++--
4 files changed, 19 insertions(+), 19 deletions(-)

diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
index 3df1e97..1931a25 100644
--- a/arch/arm/include/asm/kvm_host.h
+++ b/arch/arm/include/asm/kvm_host.h
@@ -125,8 +125,8 @@ struct kvm_vcpu_arch {
* here.
*/

- /* Don't run the guest on this vcpu */
- bool pause;
+ /* vcpu power-off state */
+ bool power_off;

/* IO related fields */
struct kvm_decode mmio_decode;
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c
index a9491ef..2b19ef7 100644
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -318,7 +318,7 @@ void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu)
int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu,
struct kvm_mp_state *mp_state)
{
- if (vcpu->arch.pause)
+ if (vcpu->arch.power_off)
mp_state->mp_state = KVM_MP_STATE_STOPPED;
else
mp_state->mp_state = KVM_MP_STATE_RUNNABLE;
@@ -331,10 +331,10 @@ int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu,
{
switch (mp_state->mp_state) {
case KVM_MP_STATE_RUNNABLE:
- vcpu->arch.pause = false;
+ vcpu->arch.power_off = false;
break;
case KVM_MP_STATE_STOPPED:
- vcpu->arch.pause = true;
+ vcpu->arch.power_off = true;
break;
default:
return -EINVAL;
@@ -478,11 +478,11 @@ bool kvm_arch_intc_initialized(struct kvm *kvm)
return vgic_initialized(kvm);
}

-static void vcpu_pause(struct kvm_vcpu *vcpu)
+static void vcpu_sleep(struct kvm_vcpu *vcpu)
{
wait_queue_head_t *wq = kvm_arch_vcpu_wq(vcpu);

- wait_event_interruptible(*wq, !vcpu->arch.pause);
+ wait_event_interruptible(*wq, !vcpu->arch.power_off);
}

static int kvm_vcpu_initialized(struct kvm_vcpu *vcpu)
@@ -532,8 +532,8 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)

update_vttbr(vcpu->kvm);

- if (vcpu->arch.pause)
- vcpu_pause(vcpu);
+ if (vcpu->arch.power_off)
+ vcpu_sleep(vcpu);

/*
* Disarming the background timer must be done in a
@@ -780,12 +780,12 @@ static int kvm_arch_vcpu_ioctl_vcpu_init(struct kvm_vcpu *vcpu,
vcpu_reset_hcr(vcpu);

/*
- * Handle the "start in power-off" case by marking the VCPU as paused.
+ * Handle the "start in power-off" case.
*/
if (test_bit(KVM_ARM_VCPU_POWER_OFF, vcpu->arch.features))
- vcpu->arch.pause = true;
+ vcpu->arch.power_off = true;
else
- vcpu->arch.pause = false;
+ vcpu->arch.power_off = false;

return 0;
}
diff --git a/arch/arm/kvm/psci.c b/arch/arm/kvm/psci.c
index ad6f642..0b55696 100644
--- a/arch/arm/kvm/psci.c
+++ b/arch/arm/kvm/psci.c
@@ -63,7 +63,7 @@ static unsigned long kvm_psci_vcpu_suspend(struct kvm_vcpu *vcpu)

static void kvm_psci_vcpu_off(struct kvm_vcpu *vcpu)
{
- vcpu->arch.pause = true;
+ vcpu->arch.power_off = true;
}

static unsigned long kvm_psci_vcpu_on(struct kvm_vcpu *source_vcpu)
@@ -87,7 +87,7 @@ static unsigned long kvm_psci_vcpu_on(struct kvm_vcpu *source_vcpu)
*/
if (!vcpu)
return PSCI_RET_INVALID_PARAMS;
- if (!vcpu->arch.pause) {
+ if (!vcpu->arch.power_off) {
if (kvm_psci_version(source_vcpu) != KVM_ARM_PSCI_0_1)
return PSCI_RET_ALREADY_ON;
else
@@ -115,7 +115,7 @@ static unsigned long kvm_psci_vcpu_on(struct kvm_vcpu *source_vcpu)
* the general puspose registers are undefined upon CPU_ON.
*/
*vcpu_reg(vcpu, 0) = context_id;
- vcpu->arch.pause = false;
+ vcpu->arch.power_off = false;
smp_mb(); /* Make sure the above is visible */

wq = kvm_arch_vcpu_wq(vcpu);
@@ -153,7 +153,7 @@ 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.pause)
+ if (!tmp->arch.power_off)
return PSCI_0_2_AFFINITY_LEVEL_ON;
}
}
@@ -179,7 +179,7 @@ static void kvm_prepare_system_event(struct kvm_vcpu *vcpu, u32 type)
* re-initialized.
*/
kvm_for_each_vcpu(i, tmp, vcpu->kvm) {
- tmp->arch.pause = true;
+ tmp->arch.power_off = true;
kvm_vcpu_kick(tmp);
}

diff --git a/arch/arm64/include/asm/kvm_host.h b/arch/arm64/include/asm/kvm_host.h
index 4562459..d89ec1b 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -148,8 +148,8 @@ struct kvm_vcpu_arch {
u32 mdscr_el1;
} guest_debug_preserved;

- /* Don't run the guest */
- bool pause;
+ /* vcpu power-off state */
+ bool power_off;

/* IO related fields */
struct kvm_decode mmio_decode;
--
1.9.1


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