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Commit 6e84e0e0 authored by Marc Zyngier's avatar Marc Zyngier
Browse files

KVM: arm/arm64: vgic: Add vgic_{get,set}_phys_irq_active 



In order to control the active state of an interrupt, introduce
a pair of accessors allowing the state to be set/queried.

This only affects the logical state, and the HW state will only be
applied at world-switch time.

Acked-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
parent 08fd6461

include/kvm/arm_vgic.h

+2 −0
Original line number Diff line number Diff line
@@ -356,6 +356,8 @@ int kvm_vgic_vcpu_active_irq(struct kvm_vcpu *vcpu); 
struct irq_phys_map *kvm_vgic_map_phys_irq(struct kvm_vcpu *vcpu,

					   int virt_irq, int irq);

int kvm_vgic_unmap_phys_irq(struct kvm_vcpu *vcpu, struct irq_phys_map *map);

bool kvm_vgic_get_phys_irq_active(struct irq_phys_map *map);

void kvm_vgic_set_phys_irq_active(struct irq_phys_map *map, bool active);



#define irqchip_in_kernel(k)	(!!((k)->arch.vgic.in_kernel))

#define vgic_initialized(k)	(!!((k)->arch.vgic.nr_cpus))

virt/kvm/arm/vgic.c

+24 −0
Original line number Diff line number Diff line
@@ -1801,6 +1801,30 @@ static void vgic_free_phys_irq_map_rcu(struct rcu_head *rcu) 
	kfree(entry);

}



/**

 * kvm_vgic_get_phys_irq_active - Return the active state of a mapped IRQ

 *

 * Return the logical active state of a mapped interrupt. This doesn't

 * necessarily reflects the current HW state.

 */

bool kvm_vgic_get_phys_irq_active(struct irq_phys_map *map)

{

	BUG_ON(!map);

	return map->active;

}



/**

 * kvm_vgic_set_phys_irq_active - Set the active state of a mapped IRQ

 *

 * Set the logical active state of a mapped interrupt. This doesn't

 * immediately affects the HW state.

 */

void kvm_vgic_set_phys_irq_active(struct irq_phys_map *map, bool active)

{

	BUG_ON(!map);

	map->active = active;

}



/**

 * kvm_vgic_unmap_phys_irq - Remove a virtual to physical IRQ mapping

 * @vcpu: The VCPU pointer