From: cdall@linaro.org (Christoffer Dall)
To: linux-arm-kernel@lists.infradead.org
Subject: [RFC PATCH v2 16/19] KVM: arm/arm64: Move phys_timer_emulate function
Date: Mon, 17 Jul 2017 16:27:15 +0200 [thread overview]
Message-ID: <20170717142718.13853-17-cdall@linaro.org> (raw)
In-Reply-To: <20170717142718.13853-1-cdall@linaro.org>
We are about to call phys_timer_emulate() from kvm_timer_update_state()
and modify phys_timer_emulate() at the same time. Moving the function
and modifying it in a single patch makes the diff hard to read, so do
this separately first.
No functional change.
Signed-off-by: Christoffer Dall <cdall@linaro.org>
---
virt/kvm/arm/arch_timer.c | 32 ++++++++++++++++----------------
1 file changed, 16 insertions(+), 16 deletions(-)
diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c
index d5b632d..1f82c21 100644
--- a/virt/kvm/arm/arch_timer.c
+++ b/virt/kvm/arm/arch_timer.c
@@ -252,6 +252,22 @@ static void kvm_timer_update_irq(struct kvm_vcpu *vcpu, bool new_level,
}
}
+/* Schedule the background timer for the emulated timer. */
+static void phys_timer_emulate(struct kvm_vcpu *vcpu,
+ struct arch_timer_context *timer_ctx)
+{
+ struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu;
+
+ if (kvm_timer_should_fire(timer_ctx))
+ return;
+
+ if (!kvm_timer_irq_can_fire(timer_ctx))
+ return;
+
+ /* The timer has not yet expired, schedule a background timer */
+ soft_timer_start(&timer->phys_timer, kvm_timer_compute_delta(timer_ctx));
+}
+
/*
* Check if there was a change in the timer state (should we raise or lower
* the line level to the GIC).
@@ -278,22 +294,6 @@ static void kvm_timer_update_state(struct kvm_vcpu *vcpu)
kvm_timer_update_irq(vcpu, !ptimer->irq.level, ptimer);
}
-/* Schedule the background timer for the emulated timer. */
-static void phys_timer_emulate(struct kvm_vcpu *vcpu,
- struct arch_timer_context *timer_ctx)
-{
- struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu;
-
- if (kvm_timer_should_fire(timer_ctx))
- return;
-
- if (!kvm_timer_irq_can_fire(timer_ctx))
- return;
-
- /* The timer has not yet expired, schedule a background timer */
- soft_timer_start(&timer->phys_timer, kvm_timer_compute_delta(timer_ctx));
-}
-
static void vtimer_save_state(struct kvm_vcpu *vcpu)
{
struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu;
--
2.9.0
next prev parent reply other threads:[~2017-07-17 14:27 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-07-17 14:26 [RFC PATCH v2 00/19] KVM: arm/arm64: Optimize arch timer register handling Christoffer Dall
2017-07-17 14:27 ` [RFC PATCH v2 01/19] arm64: Use physical counter for in-kernel reads Christoffer Dall
2017-07-17 14:27 ` [RFC PATCH v2 02/19] arm64: Use the physical counter when available for read_cycles Christoffer Dall
2017-07-25 9:43 ` Will Deacon
2017-07-25 14:36 ` Christoffer Dall
2017-07-26 17:17 ` Will Deacon
2017-07-27 7:14 ` Christoffer Dall
2017-07-17 14:27 ` [RFC PATCH v2 03/19] KVM: arm/arm64: Guard kvm_vgic_map_is_active against !vgic_initialized Christoffer Dall
2017-07-17 14:27 ` [RFC PATCH v2 04/19] KVM: arm/arm64: Support calling vgic_update_irq_pending from irq context Christoffer Dall
2017-07-17 14:27 ` [RFC PATCH v2 05/19] KVM: arm/arm64: Check that system supports split eoi/deactivate Christoffer Dall
2017-08-01 11:35 ` Marc Zyngier
2017-08-01 12:26 ` Christoffer Dall
2017-08-01 12:37 ` Marc Zyngier
2017-08-01 12:54 ` Christoffer Dall
2017-07-17 14:27 ` [RFC PATCH v2 06/19] KVM: arm/arm64: Make timer_arm and timer_disarm helpers more generic Christoffer Dall
2017-08-01 14:10 ` Marc Zyngier
2017-08-01 14:57 ` Christoffer Dall
2017-08-01 15:41 ` Marc Zyngier
2017-07-17 14:27 ` [RFC PATCH v2 07/19] KVM: arm/arm64: Rename soft timer to bg_timer Christoffer Dall
2017-07-17 14:27 ` [RFC PATCH v2 08/19] KVM: arm/arm64: Use separate timer for phys timer emulation Christoffer Dall
2017-07-17 14:27 ` [RFC PATCH v2 09/19] KVM: arm/arm64: Move timer/vgic flush/sync under disabled irq Christoffer Dall
2017-07-17 14:27 ` [RFC PATCH v2 10/19] KVM: arm/arm64: Move timer save/restore out of the hyp code Christoffer Dall
2017-07-17 14:27 ` [RFC PATCH v2 11/19] genirq: Document vcpu_info usage for per-CPU interrupts Christoffer Dall
2017-08-01 16:15 ` Marc Zyngier
2017-08-01 16:57 ` Christoffer Dall
2017-07-17 14:27 ` [RFC PATCH v2 12/19] KVM: arm/arm64: Set VCPU affinity for virt timer irq Christoffer Dall
2017-07-17 14:27 ` [RFC PATCH v2 13/19] KVM: arm/arm64: Avoid timer save/restore in vcpu entry/exit Christoffer Dall
2017-07-17 14:27 ` [RFC PATCH v2 14/19] KVM: arm/arm64: Support EL1 phys timer register access in set/get reg Christoffer Dall
2017-07-17 14:27 ` [RFC PATCH v2 15/19] KVM: arm/arm64: Use kvm_arm_timer_set/get_reg for guest register traps Christoffer Dall
2017-07-17 14:27 ` Christoffer Dall [this message]
2017-07-17 14:27 ` [RFC PATCH v2 17/19] KVM: arm/arm64: Avoid phys timer emulation in vcpu entry/exit Christoffer Dall
2017-07-17 14:27 ` [RFC PATCH v2 18/19] KVM: arm/arm64: Get rid of kvm_timer_flush_hwstate Christoffer Dall
2017-07-17 14:27 ` [RFC PATCH v2 19/19] KVM: arm/arm64: Rework kvm_timer_should_fire Christoffer Dall
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