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microblaze: Fix mapin_ram function

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Fix how many pages are allocated in mapin_ram. It is lowmem_size
not setup CONFIG_LOWMEM_SIZE because it is the same for all systems.
Which means that wrong pages are allocated if memory size is smaller
than CONFIG_LOWMEM_SIZE. It has dramatic impact on bootup time.
On sp605 MMU full hw design is 7s.

Signed-off-by: Michal Simek <monstr@monstr.eu>
This commit is contained in:
Michal Simek
2011-12-22 12:33:24 +01:00
parent 2f2f371f89
commit 7c0d261507
2 changed files with 2 additions and 1 deletions
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arch/microblaze/include/asm/page.h
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@@ -136,6 +136,7 @@ extern unsigned long max_pfn;
extern unsigned long memory_start;
extern unsigned long memory_size;
extern unsigned long lowmem_size;
extern int page_is_ram(unsigned long pfn);