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arch: personality independent stack top

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New arch macro STACK_TOP_MAX it gives the larges valid stack address for the
architecture in question.

It differs from STACK_TOP in that it will not distinguish between
personalities but will always return the largest possible address.

This is used to create the initial stack on execve, which we will move down to
the proper location once the binfmt code has figured out where that is.

Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ollie Wild <aaw@google.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Peter Zijlstra 2007-07-19 01:48:14 -07:00 • committed by Linus Torvalds
parent f34e3b61f2
commit b111757c50
22 changed files with 28 additions and 1 deletions
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1
include/asm-sparc/a.out.h
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@ -92,6 +92,7 @@ struct relocation_info /* used when header.a_machtype == M_SPARC */
#include <asm/page.h>
#define STACK_TOP (PAGE_OFFSET - PAGE_SIZE)
#define STACK_TOP_MAX STACK_TOP
#endif /* __KERNEL__ */