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authorMarc Zyngier <marc.zyngier@arm.com>2017-10-27 15:28:37 +0100
committerChristoffer Dall <christoffer.dall@linaro.org>2017-11-10 09:06:45 +0100
commite7c48059248e013772d8da69351ac8b262d8fce2 (patch)
treeb0d66dccf94acd24b5ed91b53554c91afe77510d /virt/kvm
parent08c9fd04211754a34dddbb1471d6265a717ef7fd (diff)
downloadblackbird-op-linux-e7c48059248e013772d8da69351ac8b262d8fce2.tar.gz
blackbird-op-linux-e7c48059248e013772d8da69351ac8b262d8fce2.zip
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>
Diffstat (limited to 'virt/kvm')
-rw-r--r--virt/kvm/arm/vgic/vgic-mmio-v3.c5
-rw-r--r--virt/kvm/arm/vgic/vgic.h2
2 files changed, 7 insertions, 0 deletions
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
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