From: Eric Auger <eric.au...@redhat.com>
For VGICv2 save and restore the CPU interface registers
are accessed. Restore the modality which has been altered.
Also explicitly set the iodev_type for both the DIST and CPU
interface.
Signed-off-by: Eric Auger <eric.au...@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyng...@arm.com>
---
virt/kvm/arm/vgic/vgic-mmio-v2.c | 2 ++
virt/kvm/arm/vgic/vgic-mmio.c | 4 +++-
2 files changed, 5 insertions(+), 1 deletion(-)
diff --git a/virt/kvm/arm/vgic/vgic-mmio-v2.c b/virt/kvm/arm/vgic/vgic-mmio-v2.c
index 4152348..b44b359 100644
--- a/virt/kvm/arm/vgic/vgic-mmio-v2.c
+++ b/virt/kvm/arm/vgic/vgic-mmio-v2.c
@@ -437,6 +437,7 @@ int vgic_v2_cpuif_uaccess(struct kvm_vcpu *vcpu, bool
is_write,
struct vgic_io_device dev = {
.regions = vgic_v2_cpu_registers,
.nr_regions = ARRAY_SIZE(vgic_v2_cpu_registers),
+ .iodev_type = IODEV_CPUIF,
};
return vgic_uaccess(vcpu, &dev, is_write, offset, val);
@@ -448,6 +449,7 @@ int vgic_v2_dist_uaccess(struct kvm_vcpu *vcpu, bool
is_write,
struct vgic_io_device dev = {
.regions = vgic_v2_dist_registers,
.nr_regions = ARRAY_SIZE(vgic_v2_dist_registers),
+ .iodev_type = IODEV_DIST,
};
return vgic_uaccess(vcpu, &dev, is_write, offset, val);
diff --git a/virt/kvm/arm/vgic/vgic-mmio.c b/virt/kvm/arm/vgic/vgic-mmio.c
index 26be827..3bad3c5 100644
--- a/virt/kvm/arm/vgic/vgic-mmio.c
+++ b/virt/kvm/arm/vgic/vgic-mmio.c
@@ -484,7 +484,8 @@ static int dispatch_mmio_read(struct kvm_vcpu *vcpu, struct
kvm_io_device *dev,
switch (iodev->iodev_type) {
case IODEV_CPUIF:
- return 1;
+ data = region->read(vcpu, addr, len);
+ break;
case IODEV_DIST:
data = region->read(vcpu, addr, len);
break;
@@ -517,6 +518,7 @@ static int dispatch_mmio_write(struct kvm_vcpu *vcpu,
struct kvm_io_device *dev,
switch (iodev->iodev_type) {
case IODEV_CPUIF:
+ region->write(vcpu, addr, len, data);
break;
case IODEV_DIST:
region->write(vcpu, addr, len, data);
--
2.8.1
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