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| author | Franck Bui-Huu <fbuihuu@gmail.com> | 2007-01-10 09:44:04 +0100 |
|---|---|---|
| committer | Ralf Baechle <ralf@linux-mips.org> | 2007-02-06 17:53:13 +0100 |
| commit | db84dc61552ae0d198a8133d28b80c3838930ba8 (patch) | |
| tree | a2aed3a3d8789f297285c153ecc352ed6c8acb22 /arch/mips/mm | |
| parent | [MIPS] Unify memset.S (diff) | |
| download | linux-db84dc61552ae0d198a8133d28b80c3838930ba8.tar.xz linux-db84dc61552ae0d198a8133d28b80c3838930ba8.zip | |
[MIPS] Setup min_low_pfn/max_low_pfn correctly
This patch makes a better usage of these two globals.
'min_low_pfn' is now correctly setup for all configs, which
allow us to rely on it in boot memory code init.
Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com>
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
Diffstat (limited to 'arch/mips/mm')
| -rw-r--r-- | arch/mips/mm/init.c | 23 |
1 files changed, 11 insertions, 12 deletions
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c index fb427dbfe71e..5257f7b42fd2 100644 --- a/arch/mips/mm/init.c +++ b/arch/mips/mm/init.c @@ -341,7 +341,6 @@ static int __init page_is_ram(unsigned long pagenr) void __init paging_init(void) { unsigned long zones_size[MAX_NR_ZONES] = { 0, }; - unsigned long max_dma, low; #ifndef CONFIG_FLATMEM unsigned long zholes_size[MAX_NR_ZONES] = { 0, }; unsigned long i, j, pfn; @@ -354,19 +353,19 @@ void __init paging_init(void) #endif kmap_coherent_init(); - max_dma = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT; - low = max_low_pfn; - #ifdef CONFIG_ISA - if (low < max_dma) - zones_size[ZONE_DMA] = low; - else { - zones_size[ZONE_DMA] = max_dma; - zones_size[ZONE_NORMAL] = low - max_dma; - } -#else - zones_size[ZONE_DMA] = low; + if (max_low_pfn >= MAX_DMA_PFN) + if (min_low_pfn >= MAX_DMA_PFN) { + zones_size[ZONE_DMA] = 0; + zones_size[ZONE_NORMAL] = max_low_pfn - min_low_pfn; + } else { + zones_size[ZONE_DMA] = MAX_DMA_PFN - min_low_pfn; + zones_size[ZONE_NORMAL] = max_low_pfn - MAX_DMA_PFN; + } + else #endif + zones_size[ZONE_DMA] = max_low_pfn - min_low_pfn; + #ifdef CONFIG_HIGHMEM zones_size[ZONE_HIGHMEM] = highend_pfn - highstart_pfn; |