diff options
| author | Christoffer Dall <christoffer.dall@linaro.org> | 2017-02-01 14:51:52 +0300 |
|---|---|---|
| committer | Christoffer Dall <cdall@linaro.org> | 2017-04-09 17:49:39 +0300 |
| commit | 3dbbdf78636e66094d82c4df496c54ff6ae46e31 (patch) | |
| tree | 968dce0cdf805eda9e658abfc6186748666c5f63 /arch/arm/kvm | |
| parent | d9e1397783765a275c3a7930250dcdb7e9480d7d (diff) | |
| download | linux-3dbbdf78636e66094d82c4df496c54ff6ae46e31.tar.xz | |
KVM: arm/arm64: Report PMU overflow interrupts to userspace irqchip
When not using an in-kernel VGIC, but instead emulating an interrupt
controller in userspace, we should report the PMU overflow status to
that userspace interrupt controller using the KVM_CAP_ARM_USER_IRQ
feature.
Reviewed-by: Alexander Graf <agraf@suse.de>
Reviewed-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'arch/arm/kvm')
| -rw-r--r-- | arch/arm/kvm/arm.c | 13 |
1 files changed, 9 insertions, 4 deletions
diff --git a/arch/arm/kvm/arm.c b/arch/arm/kvm/arm.c index ac6e57bcbe4d..9eda2932f686 100644 --- a/arch/arm/kvm/arm.c +++ b/arch/arm/kvm/arm.c @@ -635,11 +635,13 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) /* * If we have a singal pending, or need to notify a userspace - * irqchip about timer level changes, then we exit (and update - * the timer level state in kvm_timer_update_run below). + * irqchip about timer or PMU level changes, then we exit (and + * update the timer level state in kvm_timer_update_run + * below). */ if (signal_pending(current) || - kvm_timer_should_notify_user(vcpu)) { + kvm_timer_should_notify_user(vcpu) || + kvm_pmu_should_notify_user(vcpu)) { ret = -EINTR; run->exit_reason = KVM_EXIT_INTR; } @@ -712,7 +714,10 @@ int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) } /* Tell userspace about in-kernel device output levels */ - kvm_timer_update_run(vcpu); + if (unlikely(!irqchip_in_kernel(vcpu->kvm))) { + kvm_timer_update_run(vcpu); + kvm_pmu_update_run(vcpu); + } if (vcpu->sigset_active) sigprocmask(SIG_SETMASK, &sigsaved, NULL); |