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authorKumar Gala <galak@kernel.crashing.org>2008-04-15 15:52:22 -0400
committerPaul Mackerras <paulus@samba.org>2008-04-16 17:46:13 -0400
commitd7917ba7051e3fd12ebe2d5a09b29fb3a2b38190 (patch)
tree339d273aee5eb2cb83e226945f0319b51f4bdf3c /arch/powerpc/mm/init_64.c
parent99c62dd773797b68f3b1ca6bb3274725d1852fa2 (diff)
[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/init_64.c')
-rw-r--r--arch/powerpc/mm/init_64.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/arch/powerpc/mm/init_64.c b/arch/powerpc/mm/init_64.c
index 5f553991698b..9ea65d978685 100644
--- a/arch/powerpc/mm/init_64.c
+++ b/arch/powerpc/mm/init_64.c
@@ -75,6 +75,8 @@
75/* max amount of RAM to use */ 75/* max amount of RAM to use */
76unsigned long __max_memory; 76unsigned long __max_memory;
77 77
78phys_addr_t memstart_addr;
79
78void free_initmem(void) 80void free_initmem(void)
79{ 81{
80 unsigned long addr; 82 unsigned long addr;