diff options
Diffstat (limited to 'arch/arm64/include/asm/uaccess.h')
| -rw-r--r-- | arch/arm64/include/asm/uaccess.h | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/uaccess.h b/arch/arm64/include/asm/uaccess.h index 6eadf55ebaf0..3821fab01d7d 100644 --- a/arch/arm64/include/asm/uaccess.h +++ b/arch/arm64/include/asm/uaccess.h @@ -168,6 +168,18 @@ static inline bool uaccess_ttbr0_enable(void) } #endif +static inline void __uaccess_disable_hw_pan(void) +{ + asm(ALTERNATIVE("nop", SET_PSTATE_PAN(0), ARM64_HAS_PAN, + CONFIG_ARM64_PAN)); +} + +static inline void __uaccess_enable_hw_pan(void) +{ + asm(ALTERNATIVE("nop", SET_PSTATE_PAN(1), ARM64_HAS_PAN, + CONFIG_ARM64_PAN)); +} + #define __uaccess_disable(alt) \ do { \ if (!uaccess_ttbr0_disable()) \ |