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-rw-r--r--arch/powerpc/mm/mmu_context_nohash.c8
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;