Commit 622021cd authored by Sven Schnelle's avatar Sven Schnelle Committed by Vasily Gorbik
Browse files

s390: make command line configurable 



Allow to configure the command line to an arbitrary length, with a
default of 4096 bytes. Also remove COMMAND_LINE_SIZE from
include/uapi/asm/setup.h as this is dynamic now and doesn't tell
anything about the command line size limitations of a new kernel
that might be loaded.

Signed-off-by: default avatarSven Schnelle <svens@linux.ibm.com>
Reviewed-by: default avatarHeiko Carstens <hca@linux.ibm.com>
Signed-off-by: default avatarVasily Gorbik <gor@linux.ibm.com>
parent 5ecb2da6

arch/s390/Kconfig

+8 −0
Original line number Diff line number Diff line
@@ -438,6 +438,14 @@ endchoice 
config 64BIT

	def_bool y



config COMMAND_LINE_SIZE

	int "Maximum size of kernel command line"

	default 4096

	range 896 1048576

	help

	  This allows you to specify the maximum length of the kernel command

	  line.



config COMPAT

	def_bool y

	prompt "Kernel support for 31 bit emulation"

arch/s390/include/asm/setup.h

+1 −0
Original line number Diff line number Diff line
@@ -12,6 +12,7 @@ 


#define PARMAREA		0x10400



#define COMMAND_LINE_SIZE CONFIG_COMMAND_LINE_SIZE

/*

 * Machine features detected in early.c

 */

arch/s390/include/uapi/asm/setup.h

+0 −11
Original line number Diff line number Diff line 
/* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
 
/*

 *  S390 version

 *    Copyright IBM Corp. 1999, 2010

 */



#ifndef _UAPI_ASM_S390_SETUP_H

#define _UAPI_ASM_S390_SETUP_H



#define COMMAND_LINE_SIZE	4096



#endif /* _UAPI_ASM_S390_SETUP_H */