From: Andrew Jones <drjones@redhat.com> To: Eric Auger <eric.auger@linaro.org> Cc: eric.auger@st.com, patches@linaro.org, marc.zyngier@arm.com, alex.williamson@redhat.com, linux-arm-kernel@lists.infradead.org, pbonzini@redhat.com, kvmarm@lists.cs.columbia.edu Subject: Re: [PATCH 1/2] KVM: arm: rename pause into power_off Date: Tue, 7 Jul 2015 15:36:29 +0200 [thread overview] Message-ID: <20150707133629.GF3381@hawk.localdomain> (raw) In-Reply-To: <1436186996-22528-2-git-send-email-eric.auger@linaro.org> On Mon, Jul 06, 2015 at 02:49:55PM +0200, Eric Auger wrote: > 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@linaro.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 e896d2c..304004d 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; This patch should leave pause in. kvm_arch_vcpu_ioctl_set_mpstate still references it, compilation is broken until the next patch comes. > + /* 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 bcdf799..7537e68 100644 > --- a/arch/arm/kvm/arm.c > +++ b/arch/arm/kvm/arm.c > @@ -475,7 +475,7 @@ 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); Leaving pause in would allow this to already be + wait_event_interruptible(*wq, ((!vcpu->arch.power_off) && + (!vcpu->arch.pause))); which feels better. The function name is vcpu_pause, so it's nice to see state named 'pause' in there. > } > > static int kvm_vcpu_initialized(struct kvm_vcpu *vcpu) > @@ -525,7 +525,7 @@ 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); > > /* > @@ -766,12 +766,12 @@ 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 4b94b51..134971a 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); > @@ -152,7 +152,7 @@ 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; > } > } > @@ -175,7 +175,7 @@ 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 2709db2..009da6b 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 Thanks, drew
WARNING: multiple messages have this Message-ID (diff)
From: drjones@redhat.com (Andrew Jones) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH 1/2] KVM: arm: rename pause into power_off Date: Tue, 7 Jul 2015 15:36:29 +0200 [thread overview] Message-ID: <20150707133629.GF3381@hawk.localdomain> (raw) In-Reply-To: <1436186996-22528-2-git-send-email-eric.auger@linaro.org> On Mon, Jul 06, 2015 at 02:49:55PM +0200, Eric Auger wrote: > 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@linaro.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 e896d2c..304004d 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; This patch should leave pause in. kvm_arch_vcpu_ioctl_set_mpstate still references it, compilation is broken until the next patch comes. > + /* 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 bcdf799..7537e68 100644 > --- a/arch/arm/kvm/arm.c > +++ b/arch/arm/kvm/arm.c > @@ -475,7 +475,7 @@ 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); Leaving pause in would allow this to already be + wait_event_interruptible(*wq, ((!vcpu->arch.power_off) && + (!vcpu->arch.pause))); which feels better. The function name is vcpu_pause, so it's nice to see state named 'pause' in there. > } > > static int kvm_vcpu_initialized(struct kvm_vcpu *vcpu) > @@ -525,7 +525,7 @@ 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); > > /* > @@ -766,12 +766,12 @@ 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 4b94b51..134971a 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); > @@ -152,7 +152,7 @@ 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; > } > } > @@ -175,7 +175,7 @@ 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 2709db2..009da6b 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 Thanks, drew
next prev parent reply other threads:[~2015-07-07 13:25 UTC|newest] Thread overview: 24+ messages / expand[flat|nested] mbox.gz Atom feed top 2015-07-06 12:49 [PATCH 0/2] KVM: arm/arm64: Guest synchronous halt/resume Eric Auger 2015-07-06 12:49 ` Eric Auger 2015-07-06 12:49 ` [PATCH 1/2] KVM: arm: rename pause into power_off Eric Auger 2015-07-06 12:49 ` Eric Auger 2015-07-07 13:36 ` Andrew Jones [this message] 2015-07-07 13:36 ` Andrew Jones 2015-07-07 14:08 ` Eric Auger 2015-07-07 14:08 ` Eric Auger 2015-07-18 9:09 ` Christoffer Dall 2015-07-18 9:09 ` Christoffer Dall 2015-08-07 12:36 ` Eric Auger 2015-08-07 12:36 ` Eric Auger 2015-07-06 12:49 ` [PATCH 2/2] kvm: arm/arm64: implement kvm_arm_[halt,resume]_guest Eric Auger 2015-07-06 12:49 ` Eric Auger 2015-07-07 13:41 ` [PATCH 2/2] kvm: arm/arm64: implement kvm_arm_[halt, resume]_guest Andrew Jones 2015-07-07 13:41 ` Andrew Jones 2015-07-07 14:10 ` Eric Auger 2015-07-07 14:10 ` Eric Auger 2015-07-18 9:18 ` Christoffer Dall 2015-07-18 9:18 ` Christoffer Dall 2015-08-07 12:56 ` Eric Auger 2015-08-07 12:56 ` Eric Auger 2015-08-07 16:17 ` Eric Auger 2015-08-07 16:17 ` Eric Auger
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