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authorJon Tollefson <kniht@linux.vnet.ibm.com>2008-07-23 21:27:55 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-07-24 10:47:19 -0700
commit91224346aa8c1cdaa660300a98e0b074a3a95030 (patch)
tree7b4d9604001afd55e9a3fdb6d1a414f5f2d15214 /include/asm-powerpc
parent658013e93eb70494f7300bc90457b09a807232a4 (diff)
downloadlinux-bcache-91224346aa8c1cdaa660300a98e0b074a3a95030.tar.zst
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 <kniht@linux.vnet.ibm.com> Signed-off-by: Nick Piggin <npiggin@suse.de> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'include/asm-powerpc')
-rw-r--r--include/asm-powerpc/pgtable-64k.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-powerpc/pgtable-64k.h b/include/asm-powerpc/pgtable-64k.h
index c5007712473f..7e54adb35596 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)