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authorChristoffer Dall <christoffer.dall@linaro.org>2015-11-25 10:02:16 -0800
committerChristoffer Dall <christoffer.dall@linaro.org>2016-05-20 15:39:46 +0200
commit81eeb95ddbabbb998a6b39f762bc7edaa2a979b4 (patch)
tree2a22d9c5277b74c69a158364cddaeae1f0e63cfe /include/kvm
parent64a959d66e47039833e7f3c8d7e50fd4afa078ca (diff)
downloadlinux-81eeb95ddbabbb998a6b39f762bc7edaa2a979b4.tar.bz2
KVM: arm/arm64: vgic-new: Implement virtual IRQ injection
Provide a vgic_queue_irq_unlock() function which decides whether a given IRQ needs to be queued to a VCPU's ap_list. This should be called whenever an IRQ becomes pending or enabled, either as a result of userspace injection, from in-kernel emulated devices like the architected timer or from MMIO accesses to the distributor emulation. Also provides the necessary functions to allow userland to inject an IRQ to a guest. Since this is the first code that starts using our locking mechanism, we add some (hopefully) clear documentation of our locking strategy and requirements along with this patch. Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Diffstat (limited to 'include/kvm')
-rw-r--r--include/kvm/vgic/vgic.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/kvm/vgic/vgic.h b/include/kvm/vgic/vgic.h
index 6ca0781ac2cc..7b6ca90861b8 100644
--- a/include/kvm/vgic/vgic.h
+++ b/include/kvm/vgic/vgic.h
@@ -181,6 +181,9 @@ struct vgic_cpu {
u64 live_lrs;
};
+int kvm_vgic_inject_irq(struct kvm *kvm, int cpuid, unsigned int intid,
+ bool level);
+
#define irqchip_in_kernel(k) (!!((k)->arch.vgic.in_kernel))
#define vgic_initialized(k) (false)
#define vgic_ready(k) ((k)->arch.vgic.ready)