[PATCH] x86_64: 2048-byte command line

Current implementation allows the kernel to receive up to 255 characters from
the bootloader.  While the boot protocol allows greater buffers to be sent.

In current environment, the command-line is used in order to specify many
values, including suspend/resume, module arguments, splash, initramfs and
more.

255 characters are not enough anymore.

After edd issue was fixed, and dynammic kernel command-line patch was
accepted, we can extend the COMMAND_LINE_SIZE without runtime memory
requirements.

Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

diff --git a/include/asm-x86_64/setup.h b/include/asm-x86_64/setup.h
index 985d4e3c79da720b62ed4e9e86ac1f34ce30894e..eaeff73d6c10d07d91c818a182b2d7a5f08d48f1 100644 (file)
--- a/include/asm-x86_64/setup.h
+++ b/include/asm-x86_64/setup.h
@@ -1,6 +1,6 @@
 #ifndef _x8664_SETUP_H
 #define _x8664_SETUP_H
 
-#define COMMAND_LINE_SIZE      256
+#define COMMAND_LINE_SIZE      2048
 
 #endif