From: Greg KH on
2.6.33-stable review patch. If anyone has any objections, please let us know.


From: Russell King <rmk(a)>

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 <rmk+kernel(a)>
Cc: Alain Knaff <alain(a)>
Signed-off-by: Andrew Morton <akpm(a)>
Signed-off-by: Linus Torvalds <torvalds(a)>
Signed-off-by: Greg Kroah-Hartman <gregkh(a)>

--- 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.
+ */
+#define STATIC_RW_DATA static
/* 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)

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