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x86, fixmap: define reserve_top_address for x86_64

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Impact: new interface (not yet use)

Define reserve_top_address for x86_64; only for later x86 integration.

Signed-off-by: Gustavo F. Padovan <gustavo@las.ic.unicamp.br>
Acked-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: H. Peter Anvin <hpa@zytor.com>
This commit is contained in:
Gustavo F. Padovan
2009-02-15 21:48:54 -03:00
committed by H. Peter Anvin
parent ab93e3c45d
commit fd862dde18
3 changed files with 20 additions and 16 deletions
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2
arch/x86/include/asm/fixmap_64.h
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@ -68,6 +68,8 @@ enum fixed_addresses {
__end_of_fixed_addresses
};
extern void reserve_top_address(unsigned long reserve);
#define FIXADDR_TOP (VSYSCALL_END-PAGE_SIZE)
#define FIXADDR_SIZE (__end_of_permanent_fixed_addresses << PAGE_SHIFT)