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authorChristoffer Dall <cdall@linaro.org>2017-05-04 13:24:20 +0200
committerChristoffer Dall <cdall@linaro.org>2017-06-08 16:59:57 +0200
commitc6ccd30e0de384f506449474ca780ff680ad4217 (patch)
tree5fa2382ca0cb42e08e0dd080f9a68769f5547a6b /include/kvm
parent99a1db7a2c9b2ecb9a801cee3f6a7a71945a2fca (diff)
downloadop-kernel-dev-c6ccd30e0de384f506449474ca780ff680ad4217.zip
op-kernel-dev-c6ccd30e0de384f506449474ca780ff680ad4217.tar.gz
KVM: arm/arm64: Introduce an allocator for in-kernel irq lines
Having multiple devices being able to signal the same interrupt line is very confusing and almost certainly guarantees a configuration error. Therefore, introduce a very simple allocator which allows a device to claim an interrupt line from the vgic for a given VM. Signed-off-by: Christoffer Dall <cdall@linaro.org> Acked-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'include/kvm')
-rw-r--r--include/kvm/arm_vgic.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h
index dde59fb..5d5b345 100644
--- a/include/kvm/arm_vgic.h
+++ b/include/kvm/arm_vgic.h
@@ -121,6 +121,9 @@ struct vgic_irq {
u8 source; /* GICv2 SGIs only */
u8 priority;
enum vgic_irq_config config; /* Level or edge */
+
+ void *owner; /* Opaque pointer to reserve an interrupt
+ for in-kernel devices. */
};
struct vgic_register_region;
@@ -340,4 +343,6 @@ int kvm_send_userspace_msi(struct kvm *kvm, struct kvm_msi *msi);
*/
int kvm_vgic_setup_default_irq_routing(struct kvm *kvm);
+int kvm_vgic_set_owner(struct kvm_vcpu *vcpu, unsigned int intid, void *owner);
+
#endif /* __KVM_ARM_VGIC_H */
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