aboutsummaryrefslogtreecommitdiffstats
path: root/arch/powerpc/mm/ppc_mmu_32.c
diff options
context:
space:
mode:
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-07-06 15:39:01 -0700
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2010-08-05 12:56:07 +1000
commite63075a3c9377536d085bc013cd3fe6323162449 (patch)
tree28fde124dde6df867947882fc686d228502846df /arch/powerpc/mm/ppc_mmu_32.c
parentmemblock: Expose MEMBLOCK_ALLOC_ANYWHERE (diff)
downloadlinux-dev-e63075a3c9377536d085bc013cd3fe6323162449.tar.xz
linux-dev-e63075a3c9377536d085bc013cd3fe6323162449.zip
memblock: Introduce default allocation limit and use it to replace explicit ones
This introduce memblock.current_limit which is used to limit allocations from memblock_alloc() or memblock_alloc_base(..., MEMBLOCK_ALLOC_ACCESSIBLE). The old MEMBLOCK_ALLOC_ANYWHERE changes value from 0 to ~(u64)0 and can still be used with memblock_alloc_base() to allocate really anywhere. It is -no-longer- cropped to MEMBLOCK_REAL_LIMIT which disappears. Note to archs: I'm leaving the default limit to MEMBLOCK_ALLOC_ANYWHERE. I strongly recommend that you ensure that you set an appropriate limit during boot in order to guarantee that an memblock_alloc() at any time results in something that is accessible with a simple __va(). The reason is that a subsequent patch will introduce the ability for the array to resize itself by reallocating itself. The MEMBLOCK core will honor the current limit when performing those allocations. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Diffstat (limited to 'arch/powerpc/mm/ppc_mmu_32.c')
-rw-r--r--arch/powerpc/mm/ppc_mmu_32.c3
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/powerpc/mm/ppc_mmu_32.c b/arch/powerpc/mm/ppc_mmu_32.c
index f8a01829d64f..7d34e170e80f 100644
--- a/arch/powerpc/mm/ppc_mmu_32.c
+++ b/arch/powerpc/mm/ppc_mmu_32.c
@@ -223,8 +223,7 @@ void __init MMU_init_hw(void)
* Find some memory for the hash table.
*/
if ( ppc_md.progress ) ppc_md.progress("hash:find piece", 0x322);
- Hash = __va(memblock_alloc_base(Hash_size, Hash_size,
- __initial_memory_limit_addr));
+ Hash = __va(memblock_alloc(Hash_size, Hash_size));
cacheable_memzero(Hash, Hash_size);
_SDR1 = __pa(Hash) | SDR1_LOW_BITS;