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authorChristoffer Dall <cdall@linaro.org>2017-07-05 12:50:27 +0200
committerChristoffer Dall <christoffer.dall@linaro.org>2017-11-06 16:23:13 +0100
commit40f4cba9a579fe7ad1431269db8aec745c290ba0 (patch)
tree8237c6dea7ece744f86c56a865002a5494401c33 /virt
parent688c50aa72f64ca21767486e5eef876ec23e418c (diff)
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KVM: arm/arm64: Set VCPU affinity for virt timer irq
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>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/arm/arch_timer.c9
1 files changed, 9 insertions, 0 deletions
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;
}