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Commit e7c48059 authored by Marc Zyngier's avatar Marc Zyngier Committed by Christoffer Dall
Browse files

KVM: arm/arm64: GICv4: Add property field and per-VM predicate 



Add a new has_gicv4 field in the global VGIC state that indicates
whether the HW is GICv4 capable, as a per-VM predicate indicating
if there is a possibility for a VM to support direct injection
(the above being true and the VM having an ITS).

Reviewed-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: default avatarEric Auger <eric.auger@redhat.com>
Signed-off-by: default avatarMarc Zyngier <marc.zyngier@arm.com>
Signed-off-by: default avatarChristoffer Dall <christoffer.dall@linaro.org>
parent 08c9fd04

include/kvm/arm_vgic.h

+3 −0
Original line number Diff line number Diff line
@@ -73,6 +73,9 @@ struct vgic_global { 
	/* Only needed for the legacy KVM_CREATE_IRQCHIP */

	bool			can_emulate_gicv2;



	/* Hardware has GICv4? */

	bool			has_gicv4;



	/* GIC system register CPU interface */

	struct static_key_false gicv3_cpuif;

virt/kvm/arm/vgic/vgic-mmio-v3.c

+5 −0
Original line number Diff line number Diff line
@@ -54,6 +54,11 @@ bool vgic_has_its(struct kvm *kvm) 
	return dist->has_its;

}



bool vgic_supports_direct_msis(struct kvm *kvm)

{

	return kvm_vgic_global_state.has_gicv4 && vgic_has_its(kvm);

}



static unsigned long vgic_mmio_read_v3_misc(struct kvm_vcpu *vcpu,

					    gpa_t addr, unsigned int len)

{

virt/kvm/arm/vgic/vgic.h

+2 −0
Original line number Diff line number Diff line
@@ -241,4 +241,6 @@ int vgic_its_resolve_lpi(struct kvm *kvm, struct vgic_its *its, 
			 u32 devid, u32 eventid, struct vgic_irq **irq);

struct vgic_its *vgic_msi_to_its(struct kvm *kvm, struct kvm_msi *msi);



bool vgic_supports_direct_msis(struct kvm *kvm);



#endif