b111757c50
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>
20 lines
491 B
C
20 lines
491 B
C
#ifndef _ASM_IA64_USTACK_H
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#define _ASM_IA64_USTACK_H
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/*
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* Constants for the user stack size
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*/
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#ifdef __KERNEL__
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#include <asm/page.h>
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/* The absolute hard limit for stack size is 1/2 of the mappable space in the region */
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#define MAX_USER_STACK_SIZE (RGN_MAP_LIMIT/2)
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#define STACK_TOP (0x6000000000000000UL + RGN_MAP_LIMIT)
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#define STACK_TOP_MAX STACK_TOP
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#endif
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/* Make a default stack size of 2GiB */
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#define DEFAULT_USER_STACK_SIZE (1UL << 31)
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#endif /* _ASM_IA64_USTACK_H */
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