[PATCH 1/1] powerpc: Increase COMMAND_LINE_SIZE to 2048 from 512.

Joseph Salisbury joseph.salisbury at canonical.com
Tue Apr 15 01:30:33 EST 2014

BugLink: http://bugs.launchpad.net/bugs/1306677

While booting the PPC64EL kernel, the command line gets truncated to 512 characters. This is due to a hard limit of 512 defined for COMMAND_LINE_SIZE.  It would be beneficial to have a command line longer than 512 characters, as iscsi targets and cloud-init parameters are passed through the kernel command line.

Signed-off-by: Joseph Salisbury <joseph.salisbury at canonical.com>
Cc: Benjamin Herrenschmidt <benh at kernel.crashing.org> (supporter:LINUX FOR POWERPC...)
Cc: Paul Mackerras <paulus at samba.org> (supporter:LINUX FOR POWERPC...)
Cc: linuxppc-dev at lists.ozlabs.org (open list:LINUX FOR POWERPC...)
Cc: linux-kernel at vger.kernel.org (open list)
Cc: stable at vger.kernel.org

 arch/powerpc/boot/ops.h |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/powerpc/boot/ops.h b/arch/powerpc/boot/ops.h
index b3218ce..5a01fb1 100644
--- a/arch/powerpc/boot/ops.h
+++ b/arch/powerpc/boot/ops.h
@@ -15,7 +15,7 @@
 #include "types.h"
 #include "string.h"
-#define	COMMAND_LINE_SIZE	512
+#define	COMMAND_LINE_SIZE	2048	
 #define	MAX_PATH_LEN		256
 #define	MAX_PROP_LEN		256 /* What should this be? */

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