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    Subject[PATCH v5 08/16] powerpc/32: add helper to write into segment registers
    Date
    This patch add an helper which wraps 'mtsrin' instruction
    to write into segment registers.

    Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
    ---
    arch/powerpc/include/asm/reg.h | 5 +++++
    1 file changed, 5 insertions(+)

    diff --git a/arch/powerpc/include/asm/reg.h b/arch/powerpc/include/asm/reg.h
    index 1c98ef1f2d5b..a70cbaf5c26f 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")
    --
    2.13.3
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