linux/arch/powerpc
Benjamin Herrenschmidt e63075a3c9 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>
2010-08-05 12:56:07 +10:00
..
boot Merge branch 'merge' of git://git.secretlab.ca/git/linux-2.6 2010-06-27 07:30:25 -07:00
configs powerpc: Disable CONFIG_SYSFS_DEPRECATED 2010-06-15 15:02:33 +10:00
include/asm memblock: Introduce default allocation limit and use it to replace explicit ones 2010-08-05 12:56:07 +10:00
kernel memblock: Introduce default allocation limit and use it to replace explicit ones 2010-08-05 12:56:07 +10:00
kvm KVM: powerpc: fix init/exit annotation 2010-06-09 18:39:09 +03:00
lib powerpc: Fix feature-fixup tests for gcc 4.5 2010-07-08 18:11:41 +10:00
math-emu powerpc/math-emu: Fix efp dependence 2009-03-11 06:00:08 -05:00
mm memblock: Introduce default allocation limit and use it to replace explicit ones 2010-08-05 12:56:07 +10:00
oprofile powerpc/oprofile: fix potential buffer overrun in op_model_cell.c 2010-06-07 11:18:56 +02:00
platforms memblock: Rename memblock_region to memblock_type and memblock_property to memblock_region 2010-08-04 14:21:49 +10:00
sysdev Merge branch 'lmb-to-memblock' of git://git.kernel.org/pub/scm/linux/kernel/git/benh/powerpc 2010-07-14 17:27:44 -07:00
xmon powerpc: Mark some variables in the page fault path __read_mostly 2010-02-03 17:39:48 +11:00
Kconfig lmb: rename to memblock 2010-07-14 17:14:00 +10:00
Kconfig.debug powerpc: Unconditionally enabled irq stacks 2010-06-15 15:02:37 +10:00
Makefile powerpc: Fix module building for gcc 4.5 and 64 bit 2010-07-08 18:11:38 +10:00
relocs_check.pl powerpc: Check for unsupported relocs when using CONFIG_RELOCATABLE 2009-09-24 15:31:40 +10:00