diff options
| -rw-r--r-- | arch/arm64/kvm/sys_regs.c | 28 | ||||
| -rw-r--r-- | arch/arm64/kvm/sys_regs.h | 4 | ||||
| -rw-r--r-- | arch/arm64/kvm/vgic-sys-reg-v3.c | 8 |
3 files changed, 23 insertions, 17 deletions
diff --git a/arch/arm64/kvm/sys_regs.c b/arch/arm64/kvm/sys_regs.c index c06c0477fab5..1f410283c592 100644 --- a/arch/arm64/kvm/sys_regs.c +++ b/arch/arm64/kvm/sys_regs.c @@ -2650,21 +2650,29 @@ const struct sys_reg_desc *find_reg_by_id(u64 id, return find_reg(params, table, num); } +const struct sys_reg_desc *get_reg_by_id(u64 id, + const struct sys_reg_desc table[], + unsigned int num) +{ + struct sys_reg_params params; + + if (!index_to_params(id, ¶ms)) + return NULL; + + return find_reg(¶ms, table, num); +} + /* Decode an index value, and find the sys_reg_desc entry. */ static const struct sys_reg_desc *index_to_sys_reg_desc(struct kvm_vcpu *vcpu, u64 id) { const struct sys_reg_desc *r; - struct sys_reg_params params; /* We only do sys_reg for now. */ if ((id & KVM_REG_ARM_COPROC_MASK) != KVM_REG_ARM64_SYSREG) return NULL; - if (!index_to_params(id, ¶ms)) - return NULL; - - r = find_reg(¶ms, sys_reg_descs, ARRAY_SIZE(sys_reg_descs)); + r = get_reg_by_id(id, sys_reg_descs, ARRAY_SIZE(sys_reg_descs)); /* Not saved in the sys_reg array and not otherwise accessible? */ if (r && !(r->reg || r->get_user)) @@ -2723,11 +2731,10 @@ static int reg_to_user(void __user *uaddr, const u64 *val, u64 id) static int get_invariant_sys_reg(u64 id, void __user *uaddr) { - struct sys_reg_params params; const struct sys_reg_desc *r; - r = find_reg_by_id(id, ¶ms, invariant_sys_regs, - ARRAY_SIZE(invariant_sys_regs)); + r = get_reg_by_id(id, invariant_sys_regs, + ARRAY_SIZE(invariant_sys_regs)); if (!r) return -ENOENT; @@ -2736,13 +2743,12 @@ static int get_invariant_sys_reg(u64 id, void __user *uaddr) static int set_invariant_sys_reg(u64 id, void __user *uaddr) { - struct sys_reg_params params; const struct sys_reg_desc *r; int err; u64 val = 0; /* Make sure high bits are 0 for 32-bit regs */ - r = find_reg_by_id(id, ¶ms, invariant_sys_regs, - ARRAY_SIZE(invariant_sys_regs)); + r = get_reg_by_id(id, invariant_sys_regs, + ARRAY_SIZE(invariant_sys_regs)); if (!r) return -ENOENT; diff --git a/arch/arm64/kvm/sys_regs.h b/arch/arm64/kvm/sys_regs.h index aee8ea054f0d..ce30ed9566ae 100644 --- a/arch/arm64/kvm/sys_regs.h +++ b/arch/arm64/kvm/sys_regs.h @@ -195,6 +195,10 @@ const struct sys_reg_desc *find_reg_by_id(u64 id, const struct sys_reg_desc table[], unsigned int num); +const struct sys_reg_desc *get_reg_by_id(u64 id, + const struct sys_reg_desc table[], + unsigned int num); + #define AA32(_x) .aarch32_map = AA32_##_x #define Op0(_x) .Op0 = _x #define Op1(_x) .Op1 = _x diff --git a/arch/arm64/kvm/vgic-sys-reg-v3.c b/arch/arm64/kvm/vgic-sys-reg-v3.c index 07d5271e9f05..644acda33c7c 100644 --- a/arch/arm64/kvm/vgic-sys-reg-v3.c +++ b/arch/arm64/kvm/vgic-sys-reg-v3.c @@ -263,14 +263,10 @@ static const struct sys_reg_desc gic_v3_icc_reg_descs[] = { int vgic_v3_has_cpu_sysregs_attr(struct kvm_vcpu *vcpu, bool is_write, u64 id, u64 *reg) { - struct sys_reg_params params; u64 sysreg = (id & KVM_DEV_ARM_VGIC_SYSREG_MASK) | KVM_REG_SIZE_U64; - params.regval = *reg; - params.is_write = is_write; - - if (find_reg_by_id(sysreg, ¶ms, gic_v3_icc_reg_descs, - ARRAY_SIZE(gic_v3_icc_reg_descs))) + if (get_reg_by_id(sysreg, gic_v3_icc_reg_descs, + ARRAY_SIZE(gic_v3_icc_reg_descs))) return 0; return -ENXIO; |