diff options
| author | Marc Zyngier <marc.zyngier@arm.com> | 2017-10-27 15:28:37 +0100 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2017-11-10 09:06:45 +0100 |
| commit | e7c48059248e013772d8da69351ac8b262d8fce2 (patch) | |
| tree | b0d66dccf94acd24b5ed91b53554c91afe77510d | |
| parent | 08c9fd04211754a34dddbb1471d6265a717ef7fd (diff) | |
| download | linux-e7c48059248e013772d8da69351ac8b262d8fce2.tar.bz2 | |
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: Christoffer Dall <christoffer.dall@linaro.org>
Reviewed-by: Eric Auger <eric.auger@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
| -rw-r--r-- | include/kvm/arm_vgic.h | 3 | ||||
| -rw-r--r-- | virt/kvm/arm/vgic/vgic-mmio-v3.c | 5 | ||||
| -rw-r--r-- | virt/kvm/arm/vgic/vgic.h | 2 |
3 files changed, 10 insertions, 0 deletions
diff --git a/include/kvm/arm_vgic.h b/include/kvm/arm_vgic.h index 53f631bdec75..ba9fb450aa1b 100644 --- a/include/kvm/arm_vgic.h +++ b/include/kvm/arm_vgic.h @@ -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; diff --git a/virt/kvm/arm/vgic/vgic-mmio-v3.c b/virt/kvm/arm/vgic/vgic-mmio-v3.c index 83786108829e..671fe81f8e1d 100644 --- a/virt/kvm/arm/vgic/vgic-mmio-v3.c +++ b/virt/kvm/arm/vgic/vgic-mmio-v3.c @@ -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) { diff --git a/virt/kvm/arm/vgic/vgic.h b/virt/kvm/arm/vgic/vgic.h index 0ac85045c0c7..67509b203cf5 100644 --- a/virt/kvm/arm/vgic/vgic.h +++ b/virt/kvm/arm/vgic/vgic.h @@ -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 |