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| author | David S. Miller <davem@davemloft.net> | 2010-05-31 05:46:45 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-05-31 05:46:45 -0700 |
| commit | 64960848abd18d0bcde3f53ffa7ed0b631e6b25d (patch) | |
| tree | 8424a1c550a98ce09f127425fde9b7b5f2f5027a /arch/powerpc/mm/mmu_context_nohash.c | |
| parent | 2903037400a26e7c0cc93ab75a7d62abfacdf485 (diff) | |
| parent | 67a3e12b05e055c0415c556a315a3d3eb637e29e (diff) | |
Merge branch 'master' of /home/davem/src/GIT/linux-2.6/
Diffstat (limited to 'arch/powerpc/mm/mmu_context_nohash.c')
| -rw-r--r-- | arch/powerpc/mm/mmu_context_nohash.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/powerpc/mm/mmu_context_nohash.c b/arch/powerpc/mm/mmu_context_nohash.c index 1f2d9ff0989..ddfd7ad4e1d 100644 --- a/arch/powerpc/mm/mmu_context_nohash.c +++ b/arch/powerpc/mm/mmu_context_nohash.c @@ -395,10 +395,18 @@ void __init mmu_context_init(void) * the PID/TID comparison is disabled, so we can use a TID of zero * to represent all kernel pages as shared among all contexts. * -- Dan + * + * The IBM 47x core supports 16-bit PIDs, thus 65535 contexts. We + * should normally never have to steal though the facility is + * present if needed. + * -- BenH */ if (mmu_has_feature(MMU_FTR_TYPE_8xx)) { first_context = 0; last_context = 15; + } else if (mmu_has_feature(MMU_FTR_TYPE_47x)) { + first_context = 1; + last_context = 65535; } else { first_context = 1; last_context = 255; |