diff options
Diffstat (limited to 'arch/arm64/kvm/sys_regs.h')
| -rw-r--r-- | arch/arm64/kvm/sys_regs.h | 51 |
1 files changed, 37 insertions, 14 deletions
diff --git a/arch/arm64/kvm/sys_regs.h b/arch/arm64/kvm/sys_regs.h index cc0cc95a0280..e4ebb3a379fd 100644 --- a/arch/arm64/kvm/sys_regs.h +++ b/arch/arm64/kvm/sys_regs.h @@ -35,12 +35,19 @@ struct sys_reg_params { .Op2 = ((esr) >> 17) & 0x7, \ .is_write = !((esr) & 1) }) +#define esr_cp1x_32_to_params(esr) \ + ((struct sys_reg_params){ .Op1 = ((esr) >> 14) & 0x7, \ + .CRn = ((esr) >> 10) & 0xf, \ + .CRm = ((esr) >> 1) & 0xf, \ + .Op2 = ((esr) >> 17) & 0x7, \ + .is_write = !((esr) & 1) }) + struct sys_reg_desc { /* Sysreg string for debug */ const char *name; enum { - AA32_ZEROHIGH, + AA32_DIRECT, AA32_LO, AA32_HI, } aarch32_map; @@ -68,9 +75,9 @@ struct sys_reg_desc { /* Custom get/set_user functions, fallback to generic if NULL */ int (*get_user)(struct kvm_vcpu *vcpu, const struct sys_reg_desc *rd, - const struct kvm_one_reg *reg, void __user *uaddr); + u64 *val); int (*set_user)(struct kvm_vcpu *vcpu, const struct sys_reg_desc *rd, - const struct kvm_one_reg *reg, void __user *uaddr); + u64 val); /* Return mask of REG_* runtime visibility overrides */ unsigned int (*visibility)(const struct kvm_vcpu *vcpu, @@ -79,6 +86,7 @@ struct sys_reg_desc { #define REG_HIDDEN (1 << 0) /* hidden from userspace and guest */ #define REG_RAZ (1 << 1) /* RAZ from userspace and guest */ +#define REG_USER_WI (1 << 2) /* WI from userspace only */ static __printf(2, 3) inline void print_sys_reg_msg(const struct sys_reg_params *p, @@ -129,22 +137,31 @@ static inline void reset_val(struct kvm_vcpu *vcpu, const struct sys_reg_desc *r __vcpu_sys_reg(vcpu, r->reg) = r->val; } -static inline bool sysreg_hidden(const struct kvm_vcpu *vcpu, - const struct sys_reg_desc *r) +static inline unsigned int sysreg_visibility(const struct kvm_vcpu *vcpu, + const struct sys_reg_desc *r) { if (likely(!r->visibility)) - return false; + return 0; - return r->visibility(vcpu, r) & REG_HIDDEN; + return r->visibility(vcpu, r); +} + +static inline bool sysreg_hidden(const struct kvm_vcpu *vcpu, + const struct sys_reg_desc *r) +{ + return sysreg_visibility(vcpu, r) & REG_HIDDEN; } static inline bool sysreg_visible_as_raz(const struct kvm_vcpu *vcpu, const struct sys_reg_desc *r) { - if (likely(!r->visibility)) - return false; + return sysreg_visibility(vcpu, r) & REG_RAZ; +} - return r->visibility(vcpu, r) & REG_RAZ; +static inline bool sysreg_user_write_ignore(const struct kvm_vcpu *vcpu, + const struct sys_reg_desc *r) +{ + return sysreg_visibility(vcpu, r) & REG_USER_WI; } static inline int cmp_sys_reg(const struct sys_reg_desc *i1, @@ -183,10 +200,16 @@ find_reg(const struct sys_reg_params *params, const struct sys_reg_desc table[], return __inline_bsearch((void *)pval, table, num, sizeof(table[0]), match_sys_reg); } -const struct sys_reg_desc *find_reg_by_id(u64 id, - struct sys_reg_params *params, - 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); + +int kvm_arm_sys_reg_get_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *); +int kvm_arm_sys_reg_set_reg(struct kvm_vcpu *vcpu, const struct kvm_one_reg *); +int kvm_sys_reg_get_user(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg, + const struct sys_reg_desc table[], unsigned int num); +int kvm_sys_reg_set_user(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg, + const struct sys_reg_desc table[], unsigned int num); #define AA32(_x) .aarch32_map = AA32_##_x #define Op0(_x) .Op0 = _x |