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-rw-r--r--virt/kvm/arm/vgic/vgic-mmio-v2.c21
-rw-r--r--virt/kvm/arm/vgic/vgic-mmio-v3.c21
2 files changed, 36 insertions, 6 deletions
diff --git a/virt/kvm/arm/vgic/vgic-mmio-v2.c b/virt/kvm/arm/vgic/vgic-mmio-v2.c
index db646f140e7d..4f0f2c4165ec 100644
--- a/virt/kvm/arm/vgic/vgic-mmio-v2.c
+++ b/virt/kvm/arm/vgic/vgic-mmio-v2.c
@@ -75,6 +75,20 @@ static void vgic_mmio_write_v2_misc(struct kvm_vcpu *vcpu,
}
}
+static int vgic_mmio_uaccess_write_v2_misc(struct kvm_vcpu *vcpu,
+ gpa_t addr, unsigned int len,
+ unsigned long val)
+{
+ switch (addr & 0x0c) {
+ case GIC_DIST_IIDR:
+ if (val != vgic_mmio_read_v2_misc(vcpu, addr, len))
+ return -EINVAL;
+ }
+
+ vgic_mmio_write_v2_misc(vcpu, addr, len, val);
+ return 0;
+}
+
static void vgic_mmio_write_sgir(struct kvm_vcpu *source_vcpu,
gpa_t addr, unsigned int len,
unsigned long val)
@@ -367,9 +381,10 @@ static void vgic_mmio_write_apr(struct kvm_vcpu *vcpu,
}
static const struct vgic_register_region vgic_v2_dist_registers[] = {
- REGISTER_DESC_WITH_LENGTH(GIC_DIST_CTRL,
- vgic_mmio_read_v2_misc, vgic_mmio_write_v2_misc, 12,
- VGIC_ACCESS_32bit),
+ REGISTER_DESC_WITH_LENGTH_UACCESS(GIC_DIST_CTRL,
+ vgic_mmio_read_v2_misc, vgic_mmio_write_v2_misc,
+ NULL, vgic_mmio_uaccess_write_v2_misc,
+ 12, VGIC_ACCESS_32bit),
REGISTER_DESC_WITH_BITS_PER_IRQ(GIC_DIST_IGROUP,
vgic_mmio_read_raz, vgic_mmio_write_wi, NULL, NULL, 1,
VGIC_ACCESS_32bit),
diff --git a/virt/kvm/arm/vgic/vgic-mmio-v3.c b/virt/kvm/arm/vgic/vgic-mmio-v3.c
index ef57a1aa0b14..abdb0ec77b38 100644
--- a/virt/kvm/arm/vgic/vgic-mmio-v3.c
+++ b/virt/kvm/arm/vgic/vgic-mmio-v3.c
@@ -113,6 +113,20 @@ static void vgic_mmio_write_v3_misc(struct kvm_vcpu *vcpu,
}
}
+static int vgic_mmio_uaccess_write_v3_misc(struct kvm_vcpu *vcpu,
+ gpa_t addr, unsigned int len,
+ unsigned long val)
+{
+ switch (addr & 0x0c) {
+ case GICD_IIDR:
+ if (val != vgic_mmio_read_v3_misc(vcpu, addr, len))
+ return -EINVAL;
+ }
+
+ vgic_mmio_write_v3_misc(vcpu, addr, len, val);
+ return 0;
+}
+
static unsigned long vgic_mmio_read_irouter(struct kvm_vcpu *vcpu,
gpa_t addr, unsigned int len)
{
@@ -449,9 +463,10 @@ static void vgic_mmio_write_pendbase(struct kvm_vcpu *vcpu,
}
static const struct vgic_register_region vgic_v3_dist_registers[] = {
- REGISTER_DESC_WITH_LENGTH(GICD_CTLR,
- vgic_mmio_read_v3_misc, vgic_mmio_write_v3_misc, 16,
- VGIC_ACCESS_32bit),
+ REGISTER_DESC_WITH_LENGTH_UACCESS(GICD_CTLR,
+ vgic_mmio_read_v3_misc, vgic_mmio_write_v3_misc,
+ NULL, vgic_mmio_uaccess_write_v3_misc,
+ 16, VGIC_ACCESS_32bit),
REGISTER_DESC_WITH_LENGTH(GICD_STATUSR,
vgic_mmio_read_rao, vgic_mmio_write_wi, 4,
VGIC_ACCESS_32bit),