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authorFranck Bui-Huu <fbuihuu@gmail.com>2006-12-06 16:48:28 +0100
committerRalf Baechle <ralf@linux-mips.org>2006-12-12 01:46:24 +0000
commitcbb8fc07974073543fdc61da23713ab49ddd3ced (patch)
treeb7f2bf310dd2ae832c6b158d56f9124a18b0bc52
parentb228f4c54df37b53c6f364aa7f3efa4280bcc4f0 (diff)
[MIPS] paging_init(): use highend_pfn/highstart_pfn
This patch makes paging_init() use highend_pfn/highstart_pfn globals. It removes the need of 'high' local which was needed only by HIGHMEM config. More important perhaps, it fixes a bug when HIGHMEM is set but there's actually no physical highmem (highend_pfn = 0) Signed-off-by: Franck Bui-Huu <fbuihuu@gmail.com> Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
-rw-r--r--arch/mips/mm/init.c17
1 files changed, 8 insertions, 9 deletions
diff --git a/arch/mips/mm/init.c b/arch/mips/mm/init.c
index 9e29ba9205f..ea2d15370bb 100644
--- a/arch/mips/mm/init.c
+++ b/arch/mips/mm/init.c
@@ -316,7 +316,7 @@ 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, high, low;
+ unsigned long max_dma, low;
#ifndef CONFIG_FLATMEM
unsigned long zholes_size[MAX_NR_ZONES] = { 0, };
unsigned long i, j, pfn;
@@ -331,7 +331,6 @@ void __init paging_init(void)
max_dma = virt_to_phys((char *)MAX_DMA_ADDRESS) >> PAGE_SHIFT;
low = max_low_pfn;
- high = highend_pfn;
#ifdef CONFIG_ISA
if (low < max_dma)
@@ -344,13 +343,13 @@ void __init paging_init(void)
zones_size[ZONE_DMA] = low;
#endif
#ifdef CONFIG_HIGHMEM
- if (cpu_has_dc_aliases) {
- printk(KERN_WARNING "This processor doesn't support highmem.");
- if (high - low)
- printk(" %ldk highmem ignored", high - low);
- printk("\n");
- } else
- zones_size[ZONE_HIGHMEM] = high - low;
+ zones_size[ZONE_HIGHMEM] = highend_pfn - highstart_pfn;
+
+ if (cpu_has_dc_aliases && zones_size[ZONE_HIGHMEM]) {
+ printk(KERN_WARNING "This processor doesn't support highmem."
+ " %ldk highmem ignored\n", zones_size[ZONE_HIGHMEM]);
+ zones_size[ZONE_HIGHMEM] = 0;
+ }
#endif
#ifdef CONFIG_FLATMEM