s390x/ccw: create s390 phb for compat reasons as well
d32bd032d8
("s390x/ccw: create s390 phb conditionally") made registering the s390 pci host bridge conditional on presense of the zpci facility bit. Sadly, that breaks migration from machines that did not use the cpu model (2.7 and previous). Create the s390 phb for pre-cpu model machines as well: We can tweak s390_has_feat() to always indicate the zpci facility bit when no cpu model is available (on 2.7 and previous compat machines). Fixes:d32bd032d8
("s390x/ccw: create s390 phb conditionally") Acked-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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@ -196,6 +196,9 @@ bool s390_has_feat(S390Feat feat)
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}
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}
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}
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}
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#endif
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#endif
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if (feat == S390_FEAT_ZPCI) {
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return true;
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}
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return 0;
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return 0;
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}
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}
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return test_bit(feat, cpu->model->features);
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return test_bit(feat, cpu->model->features);
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