From e99a084b767971afec5449db8143353062800264 Mon Sep 17 00:00:00 2001 From: Russell King Date: Wed, 10 Mar 2010 15:23:53 -0800 Subject: [PATCH] decompress: fix new decompressor for PIC commit 5ceaa2f39bfa73c4398cd01e78f1c3ebde3d3383 upstream. The ARM kernel decompressor wants to be able to relocate r/w data independently from the rest of the image, and we do this by ensuring that r/w data has global visibility. Define STATIC_RW_DATA to be empty to achieve this. Signed-off-by: Russell King Cc: Alain Knaff Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds Signed-off-by: Greg Kroah-Hartman --- include/linux/decompress/mm.h | 14 ++++++++++++-- 1 file changed, 12 insertions(+), 2 deletions(-) diff --git a/include/linux/decompress/mm.h b/include/linux/decompress/mm.h index 12ff8c3f1d05..3e9bd6ae10c0 100644 --- a/include/linux/decompress/mm.h +++ b/include/linux/decompress/mm.h @@ -14,11 +14,21 @@ /* Code active when included from pre-boot environment: */ +/* + * Some architectures want to ensure there is no local data in their + * pre-boot environment, so that data can arbitarily relocated (via + * GOT references). This is achieved by defining STATIC_RW_DATA to + * be null. + */ +#ifndef STATIC_RW_DATA +#define STATIC_RW_DATA static +#endif + /* A trivial malloc implementation, adapted from * malloc by Hannu Savolainen 1993 and Matthias Urlichs 1994 */ -static unsigned long malloc_ptr; -static int malloc_count; +STATIC_RW_DATA unsigned long malloc_ptr; +STATIC_RW_DATA int malloc_count; static void *malloc(int size) { -- 2.34.1