diff options
Diffstat (limited to 'virt/kvm/arm/vgic')
| -rw-r--r-- | virt/kvm/arm/vgic/vgic-mmio-v2.c | 21 | ||||
| -rw-r--r-- | virt/kvm/arm/vgic/vgic-mmio-v3.c | 21 |
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), |