From: Christoffer Dall <cdall@linaro.org> To: kvmarm@lists.cs.columbia.edu, linux-arm-kernel@lists.infradead.org Cc: Christoffer Dall <cdall@linaro.org>, kvm@vger.kernel.org, Marc Zyngier <marc.zyngier@arm.com>, Catalin Marinas <catalin.marinas@arm.com>, Will Deacon <will.deacon@arm.com> Subject: [PATCH v5 13/20] KVM: arm/arm64: Set VCPU affinity for virt timer irq Date: Fri, 27 Oct 2017 10:34:34 +0200 [thread overview] Message-ID: <1509093281-15225-14-git-send-email-cdall@linaro.org> (raw) In-Reply-To: <1509093281-15225-1-git-send-email-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 93c8973..eac1b3d 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; } -- 2.7.4
WARNING: multiple messages have this Message-ID (diff)
From: cdall@linaro.org (Christoffer Dall) To: linux-arm-kernel@lists.infradead.org Subject: [PATCH v5 13/20] KVM: arm/arm64: Set VCPU affinity for virt timer irq Date: Fri, 27 Oct 2017 10:34:34 +0200 [thread overview] Message-ID: <1509093281-15225-14-git-send-email-cdall@linaro.org> (raw) In-Reply-To: <1509093281-15225-1-git-send-email-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 93c8973..eac1b3d 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; } -- 2.7.4
next prev parent reply other threads:[~2017-10-27 8:34 UTC|newest] Thread overview: 64+ messages / expand[flat|nested] mbox.gz Atom feed top 2017-10-27 8:34 [PATCH v5 00/20] KVM: arm/arm64: Optimize arch timer register handling Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-27 8:34 ` [PATCH v5 01/20] irqchip/gic: Deal with broken firmware exposing only 4kB of GICv2 CPU interface Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-27 8:34 ` [PATCH v5 02/20] arm64: Implement arch_counter_get_cntpct to read the physical counter Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-27 10:53 ` Catalin Marinas 2017-10-27 10:53 ` Catalin Marinas 2017-10-29 1:51 ` Christoffer Dall 2017-10-29 1:51 ` Christoffer Dall 2017-10-27 8:34 ` [PATCH v5 03/20] arm64: Use physical counter for in-kernel reads when booted in EL2 Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-27 10:53 ` Catalin Marinas 2017-10-27 10:53 ` Catalin Marinas 2017-10-27 8:34 ` [PATCH v5 04/20] KVM: arm/arm64: Guard kvm_vgic_map_is_active against !vgic_initialized Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-11-16 12:29 ` Andre Przywara 2017-11-16 12:29 ` Andre Przywara 2017-11-20 11:20 ` Christoffer Dall 2017-11-20 11:20 ` Christoffer Dall 2017-10-27 8:34 ` [PATCH v5 05/20] KVM: arm/arm64: Support calling vgic_update_irq_pending from irq context Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-27 8:34 ` [PATCH v5 06/20] KVM: arm/arm64: Check that system supports split eoi/deactivate Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-27 8:34 ` [PATCH v5 07/20] KVM: arm/arm64: Make timer_arm and timer_disarm helpers more generic Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-27 8:34 ` [PATCH v5 08/20] KVM: arm/arm64: Rename soft timer to bg_timer Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-27 8:34 ` [PATCH v5 09/20] KVM: arm/arm64: Move timer/vgic flush/sync under disabled irq Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-27 8:34 ` [PATCH v5 10/20] KVM: arm/arm64: Use separate timer for phys timer emulation Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-27 8:34 ` [PATCH v5 11/20] KVM: arm/arm64: Move timer save/restore out of the hyp code Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-27 8:34 ` [PATCH v5 12/20] genirq: Document vcpu_info usage for percpu_devid interrupts Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-29 15:22 ` [tip:irq/core] " tip-bot for Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall [this message] 2017-10-27 8:34 ` [PATCH v5 13/20] KVM: arm/arm64: Set VCPU affinity for virt timer irq Christoffer Dall 2017-10-27 8:34 ` [PATCH v5 14/20] KVM: arm/arm64: Avoid timer save/restore in vcpu entry/exit Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-27 8:34 ` [PATCH v5 15/20] KVM: arm/arm64: Support EL1 phys timer register access in set/get reg Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-27 8:34 ` [PATCH v5 16/20] KVM: arm/arm64: Use kvm_arm_timer_set/get_reg for guest register traps Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-27 8:34 ` [PATCH v5 17/20] KVM: arm/arm64: Move phys_timer_emulate function Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-27 8:34 ` [PATCH v5 18/20] KVM: arm/arm64: Avoid phys timer emulation in vcpu entry/exit Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-27 8:34 ` [PATCH v5 19/20] KVM: arm/arm64: Get rid of kvm_timer_flush_hwstate Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-11-27 16:50 ` Andrew Jones 2017-11-27 16:50 ` Andrew Jones 2017-11-29 17:39 ` Christoffer Dall 2017-11-29 17:39 ` Christoffer Dall 2017-11-29 18:17 ` Andrew Jones 2017-11-29 18:17 ` Andrew Jones 2017-10-27 8:34 ` [PATCH v5 20/20] KVM: arm/arm64: Rework kvm_timer_should_fire Christoffer Dall 2017-10-27 8:34 ` Christoffer Dall 2017-10-29 1:48 ` [PATCH v5 21/20] arm/arm64: KVM: Load the timer state when enabling the timer Christoffer Dall 2017-10-29 1:48 ` Christoffer Dall 2017-10-29 2:07 ` Marc Zyngier 2017-10-29 2:07 ` Marc Zyngier
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