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| author |   Christophe Leroy <christophe.leroy@c-s.fr> | 2019-02-21 19:08:44 +0000 |
|---|---|---|
| committer |   Michael Ellerman <mpe@ellerman.id.au> | 2019-02-23 21:04:32 +1100 |
| commit | 02d5d13b4544dff5fc0c0aa0179085ed52b72ecd (patch) | |
| tree | 89ca00e3e402e982247ea8cd2ecf4fd3ce4f2dea /arch/powerpc/include/asm/reg.h | |
| parent | powerpc/mm/32s: use _PAGE_EXEC in setbat() (diff) | |
| download | linux-dev-02d5d13b4544dff5fc0c0aa0179085ed52b72ecd.tar.xz linux-dev-02d5d13b4544dff5fc0c0aa0179085ed52b72ecd.zip | |
powerpc/32: add helper to write into segment registers
This patch add an helper which wraps 'mtsrin' instruction
to write into segment registers.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Diffstat (limited to 'arch/powerpc/include/asm/reg.h')
| -rw-r--r-- | arch/powerpc/include/asm/reg.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h index 1f79e1d8fb0b..c25880e6a16a 100644 --- a/arch/powerpc/include/asm/reg.h +++ b/arch/powerpc/include/asm/reg.h @@ -1425,6 +1425,11 @@ static inline void msr_check_and_clear(unsigned long bits) #define mfsrin(v) ({unsigned int rval; \ asm volatile("mfsrin %0,%1" : "=r" (rval) : "r" (v)); \ rval;}) + +static inline void mtsrin(u32 val, u32 idx) +{ + asm volatile("mtsrin %0, %1" : : "r" (val), "r" (idx)); +} #endif #define proc_trap() asm volatile("trap") |