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authorKumar Gala <galak@kernel.crashing.org>2008-04-16 05:52:22 +1000
committerPaul Mackerras <paulus@samba.org>2008-04-17 07:46:13 +1000
commitd7917ba7051e3fd12ebe2d5a09b29fb3a2b38190 (patch)
tree339d273aee5eb2cb83e226945f0319b51f4bdf3c /arch/powerpc/mm/44x_mmu.c
parent99c62dd773797b68f3b1ca6bb3274725d1852fa2 (diff)
downloadlinux-d7917ba7051e3fd12ebe2d5a09b29fb3a2b38190.tar.gz
[POWERPC] Introduce lowmem_end_addr to distinguish from total_lowmem
total_lowmem represents the amount of low memory, not the physical address that low memory ends at. If the start of memory is at 0 it happens that total_lowmem can be used as both the size and the address that lowmem ends at (or more specifically one byte beyond the end). To make the code a bit more clear and deal with the case when the start of memory isn't at physical 0, we introduce lowmem_end_addr that represents one byte beyond the last physical address in the lowmem region. Signed-off-by: Kumar Gala <galak@kernel.crashing.org> Signed-off-by: Paul Mackerras <paulus@samba.org>
Diffstat (limited to 'arch/powerpc/mm/44x_mmu.c')
-rw-r--r--arch/powerpc/mm/44x_mmu.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/arch/powerpc/mm/44x_mmu.c b/arch/powerpc/mm/44x_mmu.c
index 04dc08798d3d..953fb919eb06 100644
--- a/arch/powerpc/mm/44x_mmu.c
+++ b/arch/powerpc/mm/44x_mmu.c
@@ -67,7 +67,7 @@ unsigned long __init mmu_mapin_ram(void)
/* Pin in enough TLBs to cover any lowmem not covered by the
* initial 256M mapping established in head_44x.S */
- for (addr = PPC_PIN_SIZE; addr < total_lowmem;
+ for (addr = PPC_PIN_SIZE; addr < lowmem_end_addr;
addr += PPC_PIN_SIZE)
ppc44x_pin_tlb(addr + PAGE_OFFSET, addr);