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s390: fix setting of mio addressing control

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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: 833b441ec0 ("s390: enable processes for mio instructions")
Signed-off-by: Sebastian Ott <sebott@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Sebastian Ott
2019-07-10 13:08:06 +02:00
committed by Vasily Gorbik
parent 1b2be2071a
commit 9964f396f1
3 changed files with 3 additions and 13 deletions
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4
arch/s390/pci/pci.c
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@@ -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)