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| author | Jordan Niethe <jniethe5@gmail.com> | 2020-05-06 13:40:36 +1000 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-05-19 00:10:37 +1000 |
| commit | 5249385ad7f0ac178433f0ae9cc5b64612c8ff77 (patch) | |
| tree | 3624e16bb981dd5da8e74ae28b08695bf42e878c /arch/powerpc/include/asm/uaccess.h | |
| parent | a8646f43ba5046e7f5c4396125d5136bfcb17b49 (diff) | |
| download | lwn-5249385ad7f0ac178433f0ae9cc5b64612c8ff77.tar.gz lwn-5249385ad7f0ac178433f0ae9cc5b64612c8ff77.zip | |
powerpc: Define and use get_user_instr() et. al.
Define specialised get_user_instr(), __get_user_instr() and
__get_user_instr_inatomic() macros for reading instructions from user
and/or kernel space.
Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
Reviewed-by: Alistair Popple <alistair@popple.id.au>
[mpe: Squash in addition of get_user_instr() & __user annotations]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200506034050.24806-17-jniethe5@gmail.com
Diffstat (limited to 'arch/powerpc/include/asm/uaccess.h')
| -rw-r--r-- | arch/powerpc/include/asm/uaccess.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/uaccess.h b/arch/powerpc/include/asm/uaccess.h index 2f500debae21..0d2d0c3dc527 100644 --- a/arch/powerpc/include/asm/uaccess.h +++ b/arch/powerpc/include/asm/uaccess.h @@ -105,6 +105,15 @@ static inline int __access_ok(unsigned long addr, unsigned long size, #define __put_user_inatomic(x, ptr) \ __put_user_nosleep((__typeof__(*(ptr)))(x), (ptr), sizeof(*(ptr))) +#define get_user_instr(x, ptr) \ + get_user((x).val, (u32 __user *)(ptr)) + +#define __get_user_instr(x, ptr) \ + __get_user_nocheck((x).val, (u32 __user *)(ptr), sizeof(u32), true) + +#define __get_user_instr_inatomic(x, ptr) \ + __get_user_nosleep((x).val, (u32 __user *)(ptr), sizeof(u32)) + extern long __put_user_bad(void); /* |