[POWERPC] Introduce lowmem_end_addr to distinguish from total_lowmem

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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>

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Kumar Gala 2008-04-16 05:52:22 +10:00 • committed by Paul Mackerras

parent 99c62dd773

commit d7917ba705

5 changed files with 16 additions and 9 deletions

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2

arch/powerpc/mm/44x_mmu.c

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4

arch/powerpc/mm/init_32.c

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arch/powerpc/mm/init_64.c

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arch/powerpc/mm/mem.c

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arch/powerpc/mm/mmu_decl.h

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