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s390/extable: sort amode31 extable early 

The early program check handler is active before the amode31 extable
is sorted. Therefore in case a program check happens early within the
amode31 code the extable entry might not be found.

Fix this by sorting the amode31 extable early.

Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2022-02-28 10:45:43 +01:00 committed by Vasily Gorbik
parent 9d792ef17f
commit a156f09c90
2 changed files with 6 additions and 1 deletions
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6
arch/s390/kernel/early.c
View File

@ -293,6 +293,11 @@ static void __init check_image_bootable(void)
disabled_wait();
}
static void __init sort_amode31_extable(void)
{
sort_extable(__start_amode31_ex_table, __stop_amode31_ex_table);
}
void __init startup_init(void)
{
sclp_early_adjust_va();
@ -301,6 +306,7 @@ void __init startup_init(void)
time_early_init();
init_kernel_storage_key();
lockdep_off();
sort_amode31_extable();
setup_lowcore_early();
setup_facility_list();
detect_machine_type();

1
arch/s390/kernel/traps.c
View File

@ -291,7 +291,6 @@ static void __init test_monitor_call(void)
void __init trap_init(void)
{
sort_extable(__start_amode31_ex_table, __stop_amode31_ex_table);
local_mcck_enable();
test_monitor_call();
}