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authorMarc Zyngier <marc.zyngier@arm.com>2017-10-27 17:28:42 +0300
committerChristoffer Dall <christoffer.dall@linaro.org>2017-11-10 11:29:37 +0300
commit0fc9a58ee45532e7a298c7aa626b3fe5ff8cdf87 (patch)
tree25e1a002ba7def8f2cccd74d38e24eee0cd5da6f /virt
parent07b46ed116cf0893200c97db2f72e0f7839b7f91 (diff)
downloadlinux-0fc9a58ee45532e7a298c7aa626b3fe5ff8cdf87.tar.xz
KVM: arm/arm64: GICv4: Propagate affinity changes to the physical ITS
When the guest issues an affinity change, we need to tell the physical ITS that we're now targetting a new vcpu. This is done by extracting the current mapping, updating the target, and reapplying the mapping. Reviewed-by: Christoffer Dall <christoffer.dall@linaro.org> Signed-off-by: Marc Zyngier <marc.zyngier@arm.com> Signed-off-by: Christoffer Dall <christoffer.dall@linaro.org>
Diffstat (limited to 'virt')
-rw-r--r--virt/kvm/arm/vgic/vgic-its.c16
1 files changed, 15 insertions, 1 deletions
diff --git a/virt/kvm/arm/vgic/vgic-its.c b/virt/kvm/arm/vgic/vgic-its.c
index ad14af8a4412..80bea7021e2e 100644
--- a/virt/kvm/arm/vgic/vgic-its.c
+++ b/virt/kvm/arm/vgic/vgic-its.c
@@ -338,11 +338,25 @@ static int vgic_copy_lpi_list(struct kvm_vcpu *vcpu, u32 **intid_ptr)
static int update_affinity(struct vgic_irq *irq, struct kvm_vcpu *vcpu)
{
+ int ret = 0;
+
spin_lock(&irq->irq_lock);
irq->target_vcpu = vcpu;
spin_unlock(&irq->irq_lock);
- return 0;
+ if (irq->hw) {
+ struct its_vlpi_map map;
+
+ ret = its_get_vlpi(irq->host_irq, &map);
+ if (ret)
+ return ret;
+
+ map.vpe = &vcpu->arch.vgic_cpu.vgic_v3.its_vpe;
+
+ ret = its_map_vlpi(irq->host_irq, &map);
+ }
+
+ return ret;
}
/*