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OpenCloudOS-Kernel
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[PATCH] Dynamic kernel command-line: x86_64 

1. Rename saved_command_line into boot_command_line.
2. Set command_line as __initdata.

Signed-off-by: Alon Bar-Lev <alon.barlev@gmail.com>
Cc: Andi Kleen <ak@muc.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Alon Bar-Lev 2007-02-12 00:54:25 -08:00 committed by Linus Torvalds
parent 712f77b565
commit adf48856db
3 changed files with 6 additions and 6 deletions
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4
arch/x86_64/kernel/head64.c
View File

@ -34,7 +34,7 @@ static void __init clear_bss(void)
#define OLD_CL_BASE_ADDR 0x90000
#define OLD_CL_OFFSET 0x90022
extern char saved_command_line[];
extern char __initdata boot_command_line[];
static void __init copy_bootdata(char *real_mode_data)
{
@ -50,7 +50,7 @@ static void __init copy_bootdata(char *real_mode_data)
new_data = OLD_CL_BASE_ADDR + * (u16 *) OLD_CL_OFFSET;
}
command_line = (char *) ((u64)(new_data));
memcpy(saved_command_line, command_line, COMMAND_LINE_SIZE);
memcpy(boot_command_line, command_line, COMMAND_LINE_SIZE);
}
void __init x86_64_start_kernel(char * real_mode_data)

6
arch/x86_64/kernel/setup.c
View File

@ -100,7 +100,7 @@ EXPORT_SYMBOL_GPL(edid_info);
extern int root_mountflags;
char command_line[COMMAND_LINE_SIZE];
char __initdata command_line[COMMAND_LINE_SIZE];
struct resource standard_io_resources[] = {
{ .name = "dma1", .start = 0x00, .end = 0x1f,
@ -343,7 +343,7 @@ static void discover_ebda(void)
void __init setup_arch(char **cmdline_p)
{
printk(KERN_INFO "Command line: %s\n", saved_command_line);
printk(KERN_INFO "Command line: %s\n", boot_command_line);
ROOT_DEV = old_decode_dev(ORIG_ROOT_DEV);
screen_info = SCREEN_INFO;
@ -373,7 +373,7 @@ void __init setup_arch(char **cmdline_p)
early_identify_cpu(&boot_cpu_data);
strlcpy(command_line, saved_command_line, COMMAND_LINE_SIZE);
strlcpy(command_line, boot_command_line, COMMAND_LINE_SIZE);
*cmdline_p = command_line;
parse_early_param();

2
include/asm-x86_64/bootsetup.h
View File

@ -31,7 +31,7 @@ extern char x86_boot_params[BOOT_PARAM_SIZE];
#define EDD_MBR_SIG_NR (*(unsigned char *) (PARAM+EDD_MBR_SIG_NR_BUF))
#define EDD_MBR_SIGNATURE ((unsigned int *) (PARAM+EDD_MBR_SIG_BUF))
#define EDD_BUF ((struct edd_info *) (PARAM+EDDBUF))
#define COMMAND_LINE saved_command_line
#define COMMAND_LINE boot_command_line
#define RAMDISK_IMAGE_START_MASK 0x07FF
#define RAMDISK_PROMPT_FLAG 0x8000