diff options
Diffstat (limited to 'arch/arm64/include')
| -rw-r--r-- | arch/arm64/include/asm/mte.h | 4 | ||||
| -rw-r--r-- | arch/arm64/include/asm/pointer_auth.h | 25 | ||||
| -rw-r--r-- | arch/arm64/include/asm/processor.h | 9 | ||||
| -rw-r--r-- | arch/arm64/include/asm/sysreg.h | 4 |
4 files changed, 35 insertions, 7 deletions
diff --git a/arch/arm64/include/asm/mte.h b/arch/arm64/include/asm/mte.h index a38abc15186c..5d6a53cca5d5 100644 --- a/arch/arm64/include/asm/mte.h +++ b/arch/arm64/include/asm/mte.h @@ -39,7 +39,7 @@ void mte_free_tag_storage(char *storage); void mte_sync_tags(pte_t *ptep, pte_t pte); void mte_copy_page_tags(void *kto, const void *kfrom); -void flush_mte_state(void); +void mte_thread_init_user(void); void mte_thread_switch(struct task_struct *next); void mte_suspend_enter(void); void mte_suspend_exit(void); @@ -61,7 +61,7 @@ static inline void mte_sync_tags(pte_t *ptep, pte_t pte) static inline void mte_copy_page_tags(void *kto, const void *kfrom) { } -static inline void flush_mte_state(void) +static inline void mte_thread_init_user(void) { } static inline void mte_thread_switch(struct task_struct *next) diff --git a/arch/arm64/include/asm/pointer_auth.h b/arch/arm64/include/asm/pointer_auth.h index b112a11e9302..cefe7e9b6fa9 100644 --- a/arch/arm64/include/asm/pointer_auth.h +++ b/arch/arm64/include/asm/pointer_auth.h @@ -3,6 +3,7 @@ #define __ASM_POINTER_AUTH_H #include <linux/bitops.h> +#include <linux/prctl.h> #include <linux/random.h> #include <asm/cpufeature.h> @@ -71,6 +72,10 @@ static __always_inline void ptrauth_keys_switch_kernel(struct ptrauth_keys_kerne extern int ptrauth_prctl_reset_keys(struct task_struct *tsk, unsigned long arg); +extern int ptrauth_set_enabled_keys(struct task_struct *tsk, unsigned long keys, + unsigned long enabled); +extern int ptrauth_get_enabled_keys(struct task_struct *tsk); + static inline unsigned long ptrauth_strip_insn_pac(unsigned long ptr) { return ptrauth_clear_pac(ptr); @@ -85,8 +90,17 @@ static __always_inline void ptrauth_enable(void) isb(); } -#define ptrauth_thread_init_user(tsk) \ - ptrauth_keys_init_user(&(tsk)->thread.keys_user) +#define ptrauth_thread_init_user() \ + do { \ + ptrauth_keys_init_user(¤t->thread.keys_user); \ + \ + /* enable all keys */ \ + if (system_supports_address_auth()) \ + set_task_sctlr_el1(current->thread.sctlr_user | \ + SCTLR_ELx_ENIA | SCTLR_ELx_ENIB | \ + SCTLR_ELx_ENDA | SCTLR_ELx_ENDB); \ + } while (0) + #define ptrauth_thread_init_kernel(tsk) \ ptrauth_keys_init_kernel(&(tsk)->thread.keys_kernel) #define ptrauth_thread_switch_kernel(tsk) \ @@ -95,10 +109,15 @@ static __always_inline void ptrauth_enable(void) #else /* CONFIG_ARM64_PTR_AUTH */ #define ptrauth_enable() #define ptrauth_prctl_reset_keys(tsk, arg) (-EINVAL) +#define ptrauth_set_enabled_keys(tsk, keys, enabled) (-EINVAL) +#define ptrauth_get_enabled_keys(tsk) (-EINVAL) #define ptrauth_strip_insn_pac(lr) (lr) -#define ptrauth_thread_init_user(tsk) +#define ptrauth_thread_init_user() #define ptrauth_thread_init_kernel(tsk) #define ptrauth_thread_switch_kernel(tsk) #endif /* CONFIG_ARM64_PTR_AUTH */ +#define PR_PAC_ENABLED_KEYS_MASK \ + (PR_PAC_APIAKEY | PR_PAC_APIBKEY | PR_PAC_APDAKEY | PR_PAC_APDBKEY) + #endif /* __ASM_POINTER_AUTH_H */ diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h index 80895bb30490..2f21c76324bb 100644 --- a/arch/arm64/include/asm/processor.h +++ b/arch/arm64/include/asm/processor.h @@ -156,7 +156,9 @@ struct thread_struct { u64 sctlr_user; }; -#define SCTLR_USER_MASK SCTLR_EL1_TCF0_MASK +#define SCTLR_USER_MASK \ + (SCTLR_ELx_ENIA | SCTLR_ELx_ENIB | SCTLR_ELx_ENDA | SCTLR_ELx_ENDB | \ + SCTLR_EL1_TCF0_MASK) static inline void arch_thread_struct_whitelist(unsigned long *offset, unsigned long *size) @@ -305,6 +307,11 @@ extern void __init minsigstksz_setup(void); /* PR_PAC_RESET_KEYS prctl */ #define PAC_RESET_KEYS(tsk, arg) ptrauth_prctl_reset_keys(tsk, arg) +/* PR_PAC_{SET,GET}_ENABLED_KEYS prctl */ +#define PAC_SET_ENABLED_KEYS(tsk, keys, enabled) \ + ptrauth_set_enabled_keys(tsk, keys, enabled) +#define PAC_GET_ENABLED_KEYS(tsk) ptrauth_get_enabled_keys(tsk) + #ifdef CONFIG_ARM64_TAGGED_ADDR_ABI /* PR_{SET,GET}_TAGGED_ADDR_CTRL prctl */ long set_tagged_addr_ctrl(struct task_struct *task, unsigned long arg); diff --git a/arch/arm64/include/asm/sysreg.h b/arch/arm64/include/asm/sysreg.h index d4a5fca984c3..9dc2e88b10c6 100644 --- a/arch/arm64/include/asm/sysreg.h +++ b/arch/arm64/include/asm/sysreg.h @@ -565,8 +565,10 @@ #define SCTLR_ELx_TCF_ASYNC (UL(0x2) << SCTLR_ELx_TCF_SHIFT) #define SCTLR_ELx_TCF_MASK (UL(0x3) << SCTLR_ELx_TCF_SHIFT) +#define SCTLR_ELx_ENIA_SHIFT 31 + #define SCTLR_ELx_ITFSB (BIT(37)) -#define SCTLR_ELx_ENIA (BIT(31)) +#define SCTLR_ELx_ENIA (BIT(SCTLR_ELx_ENIA_SHIFT)) #define SCTLR_ELx_ENIB (BIT(30)) #define SCTLR_ELx_ENDA (BIT(27)) #define SCTLR_ELx_EE (BIT(25)) |