Commit b8bd0220 authored May 06, 2005 by Bodo Stroesser Committed by Linus Torvalds May 06, 2005

[PATCH] uml: S390 preparation, arch_align_stack



Only x86 and x86_64 use arch_align_stack(), all other subarches have:

 #define arch_align_stack(x) (x)

So, if this definition is found, UML's own arch_align_stack() should be
skipped.

Signed-off-by: Bodo Stroesser <bstroesser@fujitsu-siemens.com>
Cc: Paolo 'Blaisorblade' Giarrusso <blaisorblade@yahoo.it>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

parent 1f3be588

arch/um/kernel/process_kern.c

+9 −0

Original line number	Diff line number	Diff line
		@@ -466,12 +466,21 @@ int singlestepping(void * t)
		return 2;
		}

		/*
		* Only x86 and x86_64 have an arch_align_stack().
		* All other arches have "#define arch_align_stack(x) (x)"
		* in their asm/system.h
		* As this is included in UML from asm-um/system-generic.h,
		* we can use it to behave as the subarch does.
		*/
		#ifndef arch_align_stack
		unsigned long arch_align_stack(unsigned long sp)
		{
		if (randomize_va_space)
		sp -= get_random_int() % 8192;
		return sp & ~0xf;
		}
		#endif


		/*