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| author |  Jordan Niethe <jniethe5@gmail.com>
| 2020-05-06 13:40:33 +1000 |
|---|---|---|
| committer |  Michael Ellerman <mpe@ellerman.id.au>
| 2020-05-19 00:10:37 +1000 |
| commit | 7ba68b2172c19031fdc2a2caf37328edd146e299 (patch) | |
| tree | 308fb5c5231ef35c900818c159b58b7410cb3d18 /arch/powerpc/include/asm/inst.h | |
| parent | powerpc: Use a function for reading instructions (diff) | |
| download | linux-7ba68b2172c19031fdc2a2caf37328edd146e299.tar.gz linux-7ba68b2172c19031fdc2a2caf37328edd146e299.tar.bz2 linux-7ba68b2172c19031fdc2a2caf37328edd146e299.zip | |
powerpc: Add a probe_user_read_inst() function
Introduce a probe_user_read_inst() function to use in cases where
probe_user_read() is used for getting an instruction. This will be
more useful for prefixed instructions.
Signed-off-by: Jordan Niethe <jniethe5@gmail.com>
Reviewed-by: Alistair Popple <alistair@popple.id.au>
[mpe: Don't write to *inst on error, fold in __user annotations]
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/20200506034050.24806-14-jniethe5@gmail.com
Diffstat (limited to 'arch/powerpc/include/asm/inst.h')
| -rw-r--r-- | arch/powerpc/include/asm/inst.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/inst.h b/arch/powerpc/include/asm/inst.h index f9cbb24d2e34..4db0ecee2698 100644 --- a/arch/powerpc/include/asm/inst.h +++ b/arch/powerpc/include/asm/inst.h @@ -37,4 +37,7 @@ static inline bool ppc_inst_equal(struct ppc_inst x, struct ppc_inst y) return ppc_inst_val(x) == ppc_inst_val(y); } +int probe_user_read_inst(struct ppc_inst *inst, + struct ppc_inst __user *nip); + #endif /* _ASM_POWERPC_INST_H */ |