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| author | Yinghai Lu <yhlu.kernel@gmail.com> | 2008-07-11 05:38:26 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-07-11 10:24:04 +0200 |
| commit | f361a450bf1ad14e2b003217dbf3958638631265 (patch) | |
| tree | 10c1e4dcc0047f6c37387cada6a0bceba088d2d2 /include/asm-x86/page.h | |
| parent | x86: reserve SLIT (diff) | |
| download | linux-f361a450bf1ad14e2b003217dbf3958638631265.tar.xz linux-f361a450bf1ad14e2b003217dbf3958638631265.zip | |
x86: introduce max_low_pfn_mapped for 64-bit
when more than 4g memory is installed, don't map the big hole below 4g.
Signed-off-by: Yinghai Lu <yhlu.kernel@gmail.com>
Cc: Suresh Siddha <suresh.b.siddha@intel.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to '')
| -rw-r--r-- | include/asm-x86/page.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/asm-x86/page.h b/include/asm-x86/page.h index b52ed85f32f5..28d7b4533b1a 100644 --- a/include/asm-x86/page.h +++ b/include/asm-x86/page.h @@ -61,6 +61,7 @@ extern void map_devmem(unsigned long pfn, unsigned long size, extern void unmap_devmem(unsigned long pfn, unsigned long size, pgprot_t vma_prot); +extern unsigned long max_low_pfn_mapped; extern unsigned long max_pfn_mapped; struct page; |