diff options
Diffstat (limited to 'include/asm-powerpc/mmu_context.h')
| -rw-r--r-- | include/asm-powerpc/mmu_context.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/asm-powerpc/mmu_context.h b/include/asm-powerpc/mmu_context.h index 8c6b1a6d944..083ac917bd2 100644 --- a/include/asm-powerpc/mmu_context.h +++ b/include/asm-powerpc/mmu_context.h @@ -25,8 +25,13 @@ static inline void enter_lazy_tlb(struct mm_struct *mm, { } +/* + * 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); |