diff options
| author | David Gibson <david@gibson.dropbear.id.au> | 2005-08-05 19:39:06 +1000 |
|---|---|---|
| committer | Paul Mackerras <paulus@samba.org> | 2005-08-29 10:53:31 +1000 |
| commit | e28f7faf05159f1cfd564596f5e6178edba6bd49 (patch) | |
| tree | 45534d2c33bff8b64e3fd155fba55146cb7518e6 /arch/ppc64/mm/imalloc.c | |
| parent | decd300b30e499fe6be1bbfc5650fc971de8c1fa (diff) | |
| download | op-kernel-dev-e28f7faf05159f1cfd564596f5e6178edba6bd49.zip op-kernel-dev-e28f7faf05159f1cfd564596f5e6178edba6bd49.tar.gz | |
[PATCH] Four level pagetables for ppc64
Implement 4-level pagetables for ppc64
This patch implements full four-level page tables for ppc64, thereby
extending the usable user address range to 44 bits (16T).
The patch uses a full page for the tables at the bottom and top level,
and a quarter page for the intermediate levels. It uses full 64-bit
pointers at every level, thus also increasing the addressable range of
physical memory. This patch also tweaks the VSID allocation to allow
matching range for user addresses (this halves the number of available
contexts) and adds some #if and BUILD_BUG sanity checks.
Signed-off-by: David Gibson <dwg@au1.ibm.com>
Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/ppc64/mm/imalloc.c')
| -rw-r--r-- | arch/ppc64/mm/imalloc.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/ppc64/mm/imalloc.c b/arch/ppc64/mm/imalloc.c index b6e75b8..c65b87b 100644 --- a/arch/ppc64/mm/imalloc.c +++ b/arch/ppc64/mm/imalloc.c @@ -31,7 +31,7 @@ static int get_free_im_addr(unsigned long size, unsigned long *im_addr) break; if ((unsigned long)tmp->addr >= ioremap_bot) addr = tmp->size + (unsigned long) tmp->addr; - if (addr > IMALLOC_END-size) + if (addr >= IMALLOC_END-size) return 1; } *im_addr = addr; |
