From a60715f58907d4e1db7be6c31fa050c993e119b5 Mon Sep 17 00:00:00 2001 From: Kyle McMartin Date: Mon, 22 Dec 2008 12:29:02 -0500 Subject: [PATCH] parisc: factor out sid to protid conversion Create a new __space_to_prot inline to convert the space id (mmu context) to a protection id. Sadly it doesn't look like the #ifdef can be eliminated since relying on the compiler to not truncate a bit on return (ctx >> SPACEID_SHIFT) << 1; seems a little dodgy. Signed-off-by: Kyle McMartin --- arch/parisc/include/asm/mmu_context.h | 13 +++++++++---- 1 file changed, 9 insertions(+), 4 deletions(-) diff --git a/arch/parisc/include/asm/mmu_context.h b/arch/parisc/include/asm/mmu_context.h index 85856c74ad1d..93028975e2cf 100644 --- a/arch/parisc/include/asm/mmu_context.h +++ b/arch/parisc/include/asm/mmu_context.h @@ -34,16 +34,21 @@ destroy_context(struct mm_struct *mm) mm->context = 0; } -static inline void load_context(mm_context_t context) +static inline unsigned long __space_to_prot(mm_context_t ctx) { - mtsp(context, 3); #if SPACEID_SHIFT == 0 - mtctl(context << 1,8); + return context << 1; #else - mtctl(context >> (SPACEID_SHIFT - 1),8); + return context >> (SPACEID_SHIFT - 1); #endif } +static inline void load_context(mm_context_t context) +{ + mtsp(context, 3); + mtctl(__space_to_prot(context), 8); +} + static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, struct task_struct *tsk) { -- 2.34.1