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| author | Marc Zyngier <marc.zyngier@arm.com> | 2017-10-27 15:28:42 +0100 |
|---|---|---|
| committer | Christoffer Dall <christoffer.dall@linaro.org> | 2017-11-10 09:29:37 +0100 |
| commit | 0fc9a58ee45532e7a298c7aa626b3fe5ff8cdf87 (patch) | |
| tree | 25e1a002ba7def8f2cccd74d38e24eee0cd5da6f /virt/kvm | |
| parent | 07b46ed116cf0893200c97db2f72e0f7839b7f91 (diff) | |
| download | lwn-0fc9a58ee45532e7a298c7aa626b3fe5ff8cdf87.tar.gz lwn-0fc9a58ee45532e7a298c7aa626b3fe5ff8cdf87.zip | |
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/kvm')
| -rw-r--r-- | virt/kvm/arm/vgic/vgic-its.c | 16 |
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; } /* |