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| author |   Sebastian Ott <sebott@linux.ibm.com> | 2019-07-10 13:08:06 +0200 |
|---|---|---|
| committer |   Vasily Gorbik <gor@linux.ibm.com> | 2019-07-11 20:40:02 +0200 |
| commit | 9964f396f1d0eed72c50f7ae367119afd355ab9c (patch) | |
| tree | df4091195e90e2cbeaf1bb4e3644825e8d207e08 /arch/s390/pci | |
| parent | s390/ipl: Fix detection of has_secure attribute (diff) | |
| download | linux-dev-9964f396f1d0eed72c50f7ae367119afd355ab9c.tar.xz linux-dev-9964f396f1d0eed72c50f7ae367119afd355ab9c.zip | |
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>
Diffstat (limited to 'arch/s390/pci')
| -rw-r--r-- | arch/s390/pci/pci.c | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/arch/s390/pci/pci.c b/arch/s390/pci/pci.c index b8a64cbb5dea..b0e3b9a0e488 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) |