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s390/mm: change default addressing mode

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Change the default addressing mode so that user space runs in primary space
and the kernel runs in home space.
In addition remove the "switch_amode" kernel parameter so all users who
already specified they want the new default behaviour will stay in the
"switched" mode instead of in the opposite they intended.
If there is a need to switch addressing modes, this can be done with the
"user_mode" kernel parameter: user_mode=home

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Heiko Carstens 2012-08-31 13:35:25 +02:00 committed by Martin Schwidefsky
parent c5e3acd666
commit 3d5787c997
1 changed files with 1 additions and 11 deletions
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12
arch/s390/kernel/setup.c
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@ -302,7 +302,7 @@ static int __init parse_vmalloc(char *arg)
} }
early_param("vmalloc", parse_vmalloc); early_param("vmalloc", parse_vmalloc);
unsigned int addressing_mode = HOME_SPACE_MODE; unsigned int addressing_mode = PRIMARY_SPACE_MODE;
EXPORT_SYMBOL_GPL(addressing_mode); EXPORT_SYMBOL_GPL(addressing_mode);
static int set_amode_primary(void) static int set_amode_primary(void)
@ -323,16 +323,6 @@ static int set_amode_primary(void)
} }
} }
/*
* Switch kernel/user addressing modes?
*/
static int __init early_parse_switch_amode(char *p)
{
addressing_mode = PRIMARY_SPACE_MODE;
return 0;
}
early_param("switch_amode", early_parse_switch_amode);
static int __init early_parse_user_mode(char *p) static int __init early_parse_user_mode(char *p)
{ {
if (p && strcmp(p, "primary") == 0) if (p && strcmp(p, "primary") == 0)