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| author | Jon Tollefson <kniht@linux.vnet.ibm.com> | 2008-07-24 06:27:55 +0200 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2008-07-24 19:47:19 +0200 |
| commit | 91224346aa8c1cdaa660300a98e0b074a3a95030 (patch) | |
| tree | 7b4d9604001afd55e9a3fdb6d1a414f5f2d15214 /include/asm-powerpc | |
| parent | powerpc: scan device tree for gigantic pages (diff) | |
| download | linux-91224346aa8c1cdaa660300a98e0b074a3a95030.tar.xz linux-91224346aa8c1cdaa660300a98e0b074a3a95030.zip | |
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.h | 2 |
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) |