From cf9427b85e90bb1ff90e2397ff419691d983c68b Mon Sep 17 00:00:00 2001 From: "Aneesh Kumar K.V" Date: Sun, 28 Apr 2013 09:37:29 +0000 Subject: powerpc: New hugepage directory format Change the hugepage directory format so that we can have leaf ptes directly at page directory avoiding the allocation of hugepage directory. With the new table format we have 3 cases for pgds and pmds: (1) invalid (all zeroes) (2) pointer to next table, as normal; bottom 6 bits == 0 (4) hugepd pointer, bottom two bits == 00, next 4 bits indicate size of table Instead of storing shift value in hugepd pointer we use mmu_psize_def index so that we can fit all the supported hugepage size in 4 bits Signed-off-by: Aneesh Kumar K.V Acked-by: Paul Mackerras Signed-off-by: Benjamin Herrenschmidt --- arch/powerpc/mm/init_64.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) (limited to 'arch/powerpc/mm/init_64.c') diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c index 7e2246fb2f31..a56de85ad3b7 100644 --- a/arch/powerpc/mm/init_64.c +++ b/arch/powerpc/mm/init_64.c @@ -129,8 +129,7 @@ void pgtable_cache_add(unsigned shift, void (*ctor)(void *)) align = max_t(unsigned long, align, minalign); name = kasprintf(GFP_KERNEL, "pgtable-2^%d", shift); new = kmem_cache_create(name, table_size, align, 0, ctor); - PGT_CACHE(shift) = new; - + pgtable_cache[shift - 1] = new; pr_debug("Allocated pgtable cache for order %d\n", shift); } -- cgit v1.2.3