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| author | Dave Jones <davej@redhat.com> | 2006-06-29 16:01:54 -0400 |
|---|---|---|
| committer | Dave Jones <davej@redhat.com> | 2006-06-29 16:01:54 -0400 |
| commit | 55b4d6a52195a8f277ffddf755ddaff359878f41 (patch) | |
| tree | 06a3183a562f8da4688f65023f7a18dcad702956 /include/asm-powerpc/mmu_context.h | |
| parent | adf8a287150667feb5747f8beade62acacc17d4e (diff) | |
| parent | 1f1332f727c3229eb2166a83fec5d3de6a73dce2 (diff) | |
| download | blackbird-op-linux-55b4d6a52195a8f277ffddf755ddaff359878f41.tar.gz blackbird-op-linux-55b4d6a52195a8f277ffddf755ddaff359878f41.zip | |
Merge ../linus
Conflicts:
drivers/char/agp/Kconfig
Diffstat (limited to 'include/asm-powerpc/mmu_context.h')
| -rw-r--r-- | include/asm-powerpc/mmu_context.h | 19 |
1 files changed, 6 insertions, 13 deletions
diff --git a/include/asm-powerpc/mmu_context.h b/include/asm-powerpc/mmu_context.h index 1b8a25fd48f3..083ac917bd29 100644 --- a/include/asm-powerpc/mmu_context.h +++ b/include/asm-powerpc/mmu_context.h @@ -20,20 +20,18 @@ * 2 of the License, or (at your option) any later version. */ -/* - * Getting into a kernel thread, there is no valid user segment, mark - * paca->pgdir NULL so that SLB miss on user addresses will fault - */ static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) { -#ifdef CONFIG_PPC_64K_PAGES - get_paca()->pgdir = NULL; -#endif /* CONFIG_PPC_64K_PAGES */ } +/* + * The proto-VSID space has 2^35 - 1 segments available for user mappings. + * Each segment contains 2^28 bytes. Each context maps 2^44 bytes, + * so we can support 2^19-1 contexts (19 == 35 + 28 - 44). + */ #define NO_CONTEXT 0 -#define MAX_CONTEXT (0x100000-1) +#define MAX_CONTEXT ((1UL << 19) - 1) extern int init_new_context(struct task_struct *tsk, struct mm_struct *mm); extern void destroy_context(struct mm_struct *mm); @@ -52,13 +50,8 @@ static inline void switch_mm(struct mm_struct *prev, struct mm_struct *next, cpu_set(smp_processor_id(), next->cpu_vm_mask); /* No need to flush userspace segments if the mm doesnt change */ -#ifdef CONFIG_PPC_64K_PAGES - if (prev == next && get_paca()->pgdir == next->pgd) - return; -#else if (prev == next) return; -#endif /* CONFIG_PPC_64K_PAGES */ #ifdef CONFIG_ALTIVEC if (cpu_has_feature(CPU_FTR_ALTIVEC)) |
