redonkable/alistair23-linux
redonkable/alistair23-linux
1
0
Fork 0
Code Releases Activity

s390: avoid double handling of "noexec" option

Browse source 
"noexec" option is already parsed during startup and its value is
exposed via noexec_disabled variable. Simply reuse that value during
machine facilities detection.

Suggested-by: Ilya Leoshkevich <iii@linux.ibm.com>
Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Vasily Gorbik 2019-10-22 17:37:51 +02:00
parent f653e29bc2
commit d3baaeb5ae
1 changed files with 1 additions and 16 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

17
arch/s390/kernel/early.c
View file

@ -238,7 +238,7 @@ static __init void detect_machine_facilities(void)
S390_lowcore.machine_flags |= MACHINE_FLAG_VX;
__ctl_set_bit(0, 17);
}
if (test_facility(130)) {
if (test_facility(130) && !noexec_disabled) {
S390_lowcore.machine_flags |= MACHINE_FLAG_NX;
__ctl_set_bit(0, 20);
}
@ -268,21 +268,6 @@ static int __init disable_vector_extension(char *str)
}
early_param("novx", disable_vector_extension);
static int __init noexec_setup(char *str)
{
bool enabled;
int rc;
rc = kstrtobool(str, &enabled);
if (!rc && !enabled) {
/* Disable no-execute support */
S390_lowcore.machine_flags &= ~MACHINE_FLAG_NX;
__ctl_clear_bit(0, 20);
}
return rc;
}
early_param("noexec", noexec_setup);
static int __init cad_setup(char *str)
{
bool enabled;