diff options
Diffstat (limited to 'arch/arm64/kvm/vgic/vgic-kvm-device.c')
| -rw-r--r-- | arch/arm64/kvm/vgic/vgic-kvm-device.c | 33 |
1 files changed, 7 insertions, 26 deletions
diff --git a/arch/arm64/kvm/vgic/vgic-kvm-device.c b/arch/arm64/kvm/vgic/vgic-kvm-device.c index c6d52a1fd9c8..bf745c6ab2ea 100644 --- a/arch/arm64/kvm/vgic/vgic-kvm-device.c +++ b/arch/arm64/kvm/vgic/vgic-kvm-device.c @@ -512,7 +512,7 @@ int vgic_v3_parse_attr(struct kvm_device *dev, struct kvm_device_attr *attr, * * @dev: kvm device handle * @attr: kvm device attribute - * @reg: address the value is read or written + * @reg: address the value is read or written, NULL for sysregs * @is_write: true if userspace is writing a register */ static int vgic_v3_attr_regs_access(struct kvm_device *dev, @@ -561,14 +561,9 @@ static int vgic_v3_attr_regs_access(struct kvm_device *dev, if (!is_write) *reg = tmp32; break; - case KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS: { - u64 regid; - - regid = (attr->attr & KVM_DEV_ARM_VGIC_SYSREG_INSTR_MASK); - ret = vgic_v3_cpu_sysregs_uaccess(vcpu, is_write, - regid, reg); + case KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS: + ret = vgic_v3_cpu_sysregs_uaccess(vcpu, attr, is_write); break; - } case KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO: { unsigned int info, intid; @@ -617,15 +612,8 @@ static int vgic_v3_set_attr(struct kvm_device *dev, reg = tmp32; return vgic_v3_attr_regs_access(dev, attr, ®, true); } - case KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS: { - u64 __user *uaddr = (u64 __user *)(long)attr->addr; - u64 reg; - - if (get_user(reg, uaddr)) - return -EFAULT; - - return vgic_v3_attr_regs_access(dev, attr, ®, true); - } + case KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS: + return vgic_v3_attr_regs_access(dev, attr, NULL, true); case KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO: { u32 __user *uaddr = (u32 __user *)(long)attr->addr; u64 reg; @@ -681,15 +669,8 @@ static int vgic_v3_get_attr(struct kvm_device *dev, tmp32 = reg; return put_user(tmp32, uaddr); } - case KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS: { - u64 __user *uaddr = (u64 __user *)(long)attr->addr; - u64 reg; - - ret = vgic_v3_attr_regs_access(dev, attr, ®, false); - if (ret) - return ret; - return put_user(reg, uaddr); - } + case KVM_DEV_ARM_VGIC_GRP_CPU_SYSREGS: + return vgic_v3_attr_regs_access(dev, attr, NULL, false); case KVM_DEV_ARM_VGIC_GRP_LEVEL_INFO: { u32 __user *uaddr = (u32 __user *)(long)attr->addr; u64 reg; |