linux-kernel - [RFC v5 09/13] KVM: arm: rename pause into power

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Message-Id: <1426776951-24901-10-git-send-email-eric.auger@linaro.org>
Date:	Thu, 19 Mar 2015 15:55:47 +0100
From:	Eric Auger <eric.auger@...aro.org>
To:	eric.auger@...com, eric.auger@...aro.org,
	christoffer.dall@...aro.org, marc.zyngier@....com,
	linux-arm-kernel@...ts.infradead.org, kvm@...r.kernel.org,
	alex.williamson@...hat.com
Cc:	linux-kernel@...r.kernel.org, patches@...aro.org,
	pbonzini@...hat.com, kim.phillips@...escale.com,
	b.reynal@...tualopensystems.com, feng.wu@...el.com
Subject: [RFC v5 09/13] KVM: arm: rename pause into power_off

The kvm_vcpu_arch pause field is renamed into power_off to prepare
for the introduction of a new pause field.

Signed-off-by: Eric Auger <eric.auger@...aro.org>

v4 -> v5:
- fix compilation issue on arm64 (add power_off field in kvm_host.h)
---
 arch/arm/include/asm/kvm_host.h   |  4 ++--
 arch/arm/kvm/arm.c                | 10 +++++-----
 arch/arm/kvm/psci.c               | 10 +++++-----
 arch/arm64/include/asm/kvm_host.h |  4 ++--
 4 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/arch/arm/include/asm/kvm_host.h b/arch/arm/include/asm/kvm_host.h
index 902a7d1..79a919c 100644
--- a/arch/arm/include/asm/kvm_host.h
+++ b/arch/arm/include/asm/kvm_host.h
@@ -129,8 +129,8 @@ 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 c3a2dc6..08e12dc 100644
--- a/arch/arm/kvm/arm.c
+++ b/arch/arm/kvm/arm.c
@@ -458,7 +458,7 @@ static void vcpu_pause(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)
@@ -508,7 +508,7 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run)
 
 		update_vttbr(vcpu->kvm);
 
-		if (vcpu->arch.pause)
+		if (vcpu->arch.power_off)
 			vcpu_pause(vcpu);
 
 		kvm_vgic_flush_hwstate(vcpu);
@@ -730,12 +730,12 @@ 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 02fa8ef..367b131 100644
--- a/arch/arm/kvm/psci.c
+++ b/arch/arm/kvm/psci.c
@@ -61,7 +61,7 @@ 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)
@@ -85,7 +85,7 @@ 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
@@ -113,7 +113,7 @@ 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);
@@ -150,7 +150,7 @@ static unsigned long kvm_psci_vcpu_affinity_info(struct kvm_vcpu *vcpu)
 	kvm_for_each_vcpu(i, tmp, kvm) {
 		mpidr = kvm_vcpu_get_mpidr_aff(tmp);
 		if (((mpidr & target_affinity_mask) == target_affinity) &&
-		    !tmp->arch.pause) {
+		    !tmp->arch.power_off) {
 			return PSCI_0_2_AFFINITY_LEVEL_ON;
 		}
 	}
@@ -173,7 +173,7 @@ 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 967fb1c..a713b0c 100644
--- a/arch/arm64/include/asm/kvm_host.h
+++ b/arch/arm64/include/asm/kvm_host.h
@@ -122,8 +122,8 @@ struct kvm_vcpu_arch {
 	 * here.
 	 */
 
-	/* 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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