s390: fix setting of mio addressing control
Move enablement of mio addressing control from detect_machine_facilities
to pci_base_init. detect_machine_facilities runs so early that the
static branches have not been toggled yet, thus mio addressing control
was always off. In pci_base_init we have to use the SMP aware
ctl_set_bit though.
Fixes: 833b441ec0f6 ("s390: enable processes for mio instructions")
Signed-off-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c
index b8a64cb..b0e3b9a 100644
--- a/arch/s390/pci/pci.c
+++ b/arch/s390/pci/pci.c
@@ -890,8 +890,10 @@ static int __init pci_base_init(void)
if (!test_facility(69) || !test_facility(71))
return 0;
- if (test_facility(153) && !s390_pci_no_mio)
+ if (test_facility(153) && !s390_pci_no_mio) {
static_branch_enable(&have_mio);
+ ctl_set_bit(2, 5);
+ }
rc = zpci_debug_init();
if (rc)
