From: Christoffer Dall <christoffer.dall@linaro.org>
To: kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org
Cc: Marc Zyngier <marc.zyngier@arm.com>,
Christoffer Dall <cdall@linaro.org>,
Shih-Wei Li <shihwei@cs.columbia.edu>,
kvm@vger.kernel.org
Subject: [PATCH v4 13/20] KVM: arm/arm64: Set VCPU affinity for virt timer irq
Date: Fri, 20 Oct 2017 13:49:32 +0200 [thread overview]
Message-ID: <20171020114939.12554-14-christoffer.dall@linaro.org> (raw)
In-Reply-To: <20171020114939.12554-1-christoffer.dall@linaro.org>
From: Christoffer Dall <cdall@linaro.org>
As we are about to take physical interrupts for the virtual timer on the
host but want to leave those active while running the VM (and let the VM
deactivate them), we need to set the vtimer PPI affinity accordingly.
Signed-off-by: Christoffer Dall <cdall@linaro.org>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
---
virt/kvm/arm/arch_timer.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c
index 93c8973a71f4..eac1b3d83a86 100644
--- a/virt/kvm/arm/arch_timer.c
+++ b/virt/kvm/arm/arch_timer.c
@@ -649,11 +649,20 @@ int kvm_timer_hyp_init(void)
return err;
}
+ err = irq_set_vcpu_affinity(host_vtimer_irq, kvm_get_running_vcpus());
+ if (err) {
+ kvm_err("kvm_arch_timer: error setting vcpu affinity\n");
+ goto out_free_irq;
+ }
+
kvm_info("virtual timer IRQ%d\n", host_vtimer_irq);
cpuhp_setup_state(CPUHP_AP_KVM_ARM_TIMER_STARTING,
"kvm/arm/timer:starting", kvm_timer_starting_cpu,
kvm_timer_dying_cpu);
+ return 0;
+out_free_irq:
+ free_percpu_irq(host_vtimer_irq, kvm_get_running_vcpus());
return err;
}
--
2.14.2
WARNING: multiple messages have this Message-ID (diff)
From: christoffer.dall@linaro.org (Christoffer Dall)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v4 13/20] KVM: arm/arm64: Set VCPU affinity for virt timer irq
Date: Fri, 20 Oct 2017 13:49:32 +0200 [thread overview]
Message-ID: <20171020114939.12554-14-christoffer.dall@linaro.org> (raw)
In-Reply-To: <20171020114939.12554-1-christoffer.dall@linaro.org>
From: Christoffer Dall <cdall@linaro.org>
As we are about to take physical interrupts for the virtual timer on the
host but want to leave those active while running the VM (and let the VM
deactivate them), we need to set the vtimer PPI affinity accordingly.
Signed-off-by: Christoffer Dall <cdall@linaro.org>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
---
virt/kvm/arm/arch_timer.c | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c
index 93c8973a71f4..eac1b3d83a86 100644
--- a/virt/kvm/arm/arch_timer.c
+++ b/virt/kvm/arm/arch_timer.c
@@ -649,11 +649,20 @@ int kvm_timer_hyp_init(void)
return err;
}
+ err = irq_set_vcpu_affinity(host_vtimer_irq, kvm_get_running_vcpus());
+ if (err) {
+ kvm_err("kvm_arch_timer: error setting vcpu affinity\n");
+ goto out_free_irq;
+ }
+
kvm_info("virtual timer IRQ%d\n", host_vtimer_irq);
cpuhp_setup_state(CPUHP_AP_KVM_ARM_TIMER_STARTING,
"kvm/arm/timer:starting", kvm_timer_starting_cpu,
kvm_timer_dying_cpu);
+ return 0;
+out_free_irq:
+ free_percpu_irq(host_vtimer_irq, kvm_get_running_vcpus());
return err;
}
--
2.14.2
next prev parent reply other threads:[~2017-10-20 11:49 UTC|newest]
Thread overview: 74+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-20 11:49 [PATCH v4 00/20] KVM: arm/arm64: Optimize arch timer register handling Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-20 11:49 ` [PATCH v4 01/20] irqchip/gic: Deal with broken firmware exposing only 4kB of GICv2 CPU interface Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-20 11:49 ` [PATCH v4 02/20] arm64: Implement arch_counter_get_cntpct to read the physical counter Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-25 13:41 ` Marc Zyngier
2017-10-25 13:41 ` Marc Zyngier
2017-10-20 11:49 ` [PATCH v4 03/20] arm64: Use physical counter for in-kernel reads when booted in EL2 Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-25 13:43 ` Marc Zyngier
2017-10-25 13:43 ` Marc Zyngier
2017-10-20 11:49 ` [PATCH v4 04/20] KVM: arm/arm64: Guard kvm_vgic_map_is_active against !vgic_initialized Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-20 11:49 ` [PATCH v4 05/20] KVM: arm/arm64: Support calling vgic_update_irq_pending from irq context Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-25 13:45 ` Marc Zyngier
2017-10-25 13:45 ` Marc Zyngier
2017-10-20 11:49 ` [PATCH v4 06/20] KVM: arm/arm64: Check that system supports split eoi/deactivate Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-25 13:47 ` Marc Zyngier
2017-10-25 13:47 ` Marc Zyngier
2017-10-20 11:49 ` [PATCH v4 07/20] KVM: arm/arm64: Make timer_arm and timer_disarm helpers more generic Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-25 13:49 ` Marc Zyngier
2017-10-25 13:49 ` Marc Zyngier
2017-10-20 11:49 ` [PATCH v4 08/20] KVM: arm/arm64: Rename soft timer to bg_timer Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-20 11:49 ` [PATCH v4 09/20] KVM: arm/arm64: Move timer/vgic flush/sync under disabled irq Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-20 11:49 ` [PATCH v4 10/20] KVM: arm/arm64: Use separate timer for phys timer emulation Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-25 13:59 ` Marc Zyngier
2017-10-25 13:59 ` Marc Zyngier
2017-10-20 11:49 ` [PATCH v4 11/20] KVM: arm/arm64: Move timer save/restore out of the hyp code Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-20 11:49 ` [PATCH v4 12/20] genirq: Document vcpu_info usage for percpu_devid interrupts Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-20 11:56 ` Thomas Gleixner
2017-10-20 11:56 ` Thomas Gleixner
2017-10-21 14:29 ` Christoffer Dall
2017-10-21 14:29 ` Christoffer Dall
2017-10-21 14:55 ` Thomas Gleixner
2017-10-21 14:55 ` Thomas Gleixner
2017-10-21 15:30 ` Christoffer Dall
2017-10-21 15:30 ` Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall [this message]
2017-10-20 11:49 ` [PATCH v4 13/20] KVM: arm/arm64: Set VCPU affinity for virt timer irq Christoffer Dall
2017-10-20 11:49 ` [PATCH v4 14/20] KVM: arm/arm64: Avoid timer save/restore in vcpu entry/exit Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-25 14:36 ` Marc Zyngier
2017-10-25 14:36 ` Marc Zyngier
2017-11-16 20:30 ` Jintack Lim
2017-11-16 20:30 ` Jintack Lim
2017-11-16 20:32 ` Jintack Lim
2017-11-16 20:32 ` Jintack Lim
2017-11-20 11:15 ` Christoffer Dall
2017-11-20 11:15 ` Christoffer Dall
2017-11-20 16:32 ` Jintack Lim
2017-11-20 16:32 ` Jintack Lim
2017-10-20 11:49 ` [PATCH v4 15/20] KVM: arm/arm64: Support EL1 phys timer register access in set/get reg Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-25 14:38 ` Marc Zyngier
2017-10-25 14:38 ` Marc Zyngier
2017-10-20 11:49 ` [PATCH v4 16/20] KVM: arm/arm64: Use kvm_arm_timer_set/get_reg for guest register traps Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-20 11:49 ` [PATCH v4 17/20] KVM: arm/arm64: Move phys_timer_emulate function Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-20 11:49 ` [PATCH v4 18/20] KVM: arm/arm64: Avoid phys timer emulation in vcpu entry/exit Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-20 11:49 ` [PATCH v4 19/20] KVM: arm/arm64: Get rid of kvm_timer_flush_hwstate Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
2017-10-20 11:49 ` [PATCH v4 20/20] KVM: arm/arm64: Rework kvm_timer_should_fire Christoffer Dall
2017-10-20 11:49 ` Christoffer Dall
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