[PATCH] x86_64: Add boot option to disable randomized mappings and cleanup

AMD SimNow!'s JIT doesn't like them at all in the guest. For distribution
installation it's easiest if it's a boot time option.

Also I moved the variable to a more appropiate place and make
it independent from sysctl

And marked __read_mostly which it is.

Signed-off-by: Andi Kleen <ak@suse.de>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/include/linux/mm.h b/include/linux/mm.h
index 75e9f0724997..26e1663a5cbe 100644
--- a/include/linux/mm.h
+++ b/include/linux/mm.h
@@ -1051,5 +1051,7 @@ int shrink_slab(unsigned long scanned, gfp_t gfp_mask,
 void drop_pagecache(void);
 void drop_slab(void);
 
+extern int randomize_va_space;
+
 #endif /* __KERNEL__ */
 #endif /* _LINUX_MM_H */