From 91224346aa8c1cdaa660300a98e0b074a3a95030 Mon Sep 17 00:00:00 2001 From: Jon Tollefson Date: Wed, 23 Jul 2008 21:27:55 -0700 Subject: powerpc: define support for 16G hugepages The huge page size is defined for 16G pages. If a hugepagesz of 16G is specified at boot-time then it becomes the huge page size instead of the default 16M. The change in pgtable-64K.h is to the macro pte_iterate_hashed_subpages to make the increment to va (the 1 being shifted) be a long so that it is not shifted to 0. Otherwise it would create an infinite loop when the shift value is for a 16G page (when base page size is 64K). Signed-off-by: Jon Tollefson Signed-off-by: Nick Piggin Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- include/asm-powerpc/pgtable-64k.h | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'include/asm-powerpc') diff --git a/include/asm-powerpc/pgtable-64k.h b/include/asm-powerpc/pgtable-64k.h index c5007712473..7e54adb3559 100644 --- a/include/asm-powerpc/pgtable-64k.h +++ b/include/asm-powerpc/pgtable-64k.h @@ -138,7 +138,7 @@ static inline struct subpage_prot_table *pgd_subpage_prot(pgd_t *pgd) unsigned __split = (psize == MMU_PAGE_4K || \ psize == MMU_PAGE_64K_AP); \ shift = mmu_psize_defs[psize].shift; \ - for (index = 0; va < __end; index++, va += (1 << shift)) { \ + for (index = 0; va < __end; index++, va += (1L << shift)) { \ if (!__split || __rpte_sub_valid(rpte, index)) do { \ #define pte_iterate_hashed_end() } while(0); } } while(0) -- cgit v1.2.3