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Diffstat (limited to '')
| -rw-r--r-- | arch/powerpc/mm/mmu_context_hash64.c (renamed from arch/powerpc/mm/mmu_context_64.c) | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/mm/mmu_context_64.c b/arch/powerpc/mm/mmu_context_hash64.c index 1db38ba1f544..dbeb86ac90cd 100644 --- a/arch/powerpc/mm/mmu_context_64.c +++ b/arch/powerpc/mm/mmu_context_hash64.c @@ -24,6 +24,14 @@ static DEFINE_SPINLOCK(mmu_context_lock); static DEFINE_IDR(mmu_context_idr); +/* + * 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 ((1UL << 19) - 1) + int init_new_context(struct task_struct *tsk, struct mm_struct *mm) { int index; |