diff options
| author | Christoffer Dall <cdall@linaro.org> | 2016-10-16 23:19:11 +0300 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2017-11-06 18:23:10 +0300 |
| commit | 006df0f34930e18d0aa52f05705bdfe1fc565943 (patch) | |
| tree | 97d97e06b56113a033ed63ce7ad16096779804f5 /virt/kvm/arm/vgic/vgic.h | |
| parent | f39d16cbabf9f939745a3850a33760910d22ef35 (diff) | |
| download | linux-006df0f34930e18d0aa52f05705bdfe1fc565943.tar.xz | |
KVM: arm/arm64: Support calling vgic_update_irq_pending from irq context
We are about to optimize our timer handling logic which involves
injecting irqs to the vgic directly from the irq handler.
Unfortunately, the injection path can take any AP list lock and irq lock
and we must therefore make sure to use spin_lock_irqsave where ever
interrupts are enabled and we are taking any of those locks, to avoid
deadlocking between process context and the ISR.
This changes a lot of the VGIC code, but the good news are that the
changes are mostly mechanical.
Acked-by: Marc Zyngier <marc,zyngier@arm.com>
Signed-off-by: Christoffer Dall <cdall@linaro.org>
Diffstat (limited to 'virt/kvm/arm/vgic/vgic.h')
| -rw-r--r-- | virt/kvm/arm/vgic/vgic.h | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/virt/kvm/arm/vgic/vgic.h b/virt/kvm/arm/vgic/vgic.h index bf9ceab67c77..4f8aecb07ae6 100644 --- a/virt/kvm/arm/vgic/vgic.h +++ b/virt/kvm/arm/vgic/vgic.h @@ -140,7 +140,8 @@ vgic_get_mmio_region(struct kvm_vcpu *vcpu, struct vgic_io_device *iodev, struct vgic_irq *vgic_get_irq(struct kvm *kvm, struct kvm_vcpu *vcpu, u32 intid); void vgic_put_irq(struct kvm *kvm, struct vgic_irq *irq); -bool vgic_queue_irq_unlock(struct kvm *kvm, struct vgic_irq *irq); +bool vgic_queue_irq_unlock(struct kvm *kvm, struct vgic_irq *irq, + unsigned long flags); void vgic_kick_vcpus(struct kvm *kvm); int vgic_check_ioaddr(struct kvm *kvm, phys_addr_t *ioaddr, |