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Subject[PATCH] xz: Enable BCJ filters on SPARC and 32-bit x86
From: Lasse Collin <lasse.collin@tukaani.org>

The BCJ filters were meant to be enabled already on these
archs, but the xz_wrap.sh script was buggy. Enabling the
filters should give smaller kernel images.

xz_wrap.sh will now use $SRCARCH instead of $ARCH to detect
the architecture. That way it doesn't need to care about the
subarchs (like i386 vs. x86_64) since the BCJ filters don't
care either.

Signed-off-by: Lasse Collin <lasse.collin@tukaani.org>
Acked-by: Jan Beulich <jbeulich@suse.com>
---

I'm not sure if this should be fixed in stable kernels.
It's not a critical bug so maybe it is better to not
touch the stable kernels.

diff -uprN linux-3.3.orig/scripts/xz_wrap.sh linux-3.3/scripts/xz_wrap.sh
--- linux-3.3.orig/scripts/xz_wrap.sh 2012-03-19 01:15:34.000000000 +0200
+++ linux-3.3/scripts/xz_wrap.sh 2012-03-19 11:20:55.289074991 +0200
@@ -12,8 +12,8 @@
BCJ=
LZMA2OPTS=

-case $ARCH in
- x86|x86_64) BCJ=--x86 ;;
+case $SRCARCH in
+ x86) BCJ=--x86 ;;
powerpc) BCJ=--powerpc ;;
ia64) BCJ=--ia64; LZMA2OPTS=pb=4 ;;
arm) BCJ=--arm ;;

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