diff options
Diffstat (limited to 'arch/powerpc/mm/mmu_context_nohash.c')
| -rw-r--r-- | arch/powerpc/mm/mmu_context_nohash.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/powerpc/mm/mmu_context_nohash.c b/arch/powerpc/mm/mmu_context_nohash.c index dbc692145ecb..ddfd7ad4e1d6 100644 --- a/arch/powerpc/mm/mmu_context_nohash.c +++ b/arch/powerpc/mm/mmu_context_nohash.c @@ -47,6 +47,7 @@ #include <linux/bootmem.h> #include <linux/notifier.h> #include <linux/cpu.h> +#include <linux/slab.h> #include <asm/mmu_context.h> #include <asm/tlbflush.h> @@ -394,10 +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; |