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[POWERPC] DEBUG_PAGEALLOC for 32-bit

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Here's an implementation of DEBUG_PAGEALLOC for ppc32. It disables BAT
mapping and is only tested with Hash table based processor though it
shouldn't be too hard to adapt it to others.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

 arch/powerpc/Kconfig.debug       |    9 ++++++
 arch/powerpc/mm/init_32.c        |    4 +++
 arch/powerpc/mm/pgtable_32.c     |   52 +++++++++++++++++++++++++++++++++++++++
 arch/powerpc/mm/ppc_mmu_32.c     |    4 ++-
 include/asm-powerpc/cacheflush.h |    6 ++++
 5 files changed, 74 insertions(+), 1 deletion(-)
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Benjamin Herrenschmidt
2007-04-12 15:30:22 +10:00
committed by Paul Mackerras
parent ee4f2ea486
commit 88df6e90fa
5 changed files with 74 additions and 1 deletions
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4
arch/powerpc/mm/init_32.c
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@@ -115,6 +115,10 @@ void MMU_setup(void)
if (strstr(cmd_line, "noltlbs")) {
__map_without_ltlbs = 1;
}
#ifdef CONFIG_DEBUG_PAGEALLOC
__map_without_bats = 1;
__map_without_ltlbs = 1;
#endif
}
/*