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We tried to make pci support optional on s390x in the past;
unfortunately, we still require the s390 phb to be created
unconditionally due to backwards compatibility issues.
Instead of sinking more effort into this (including compat
handling for older machines etc.) for non-obvious gains, let's
just make CONFIG_PCI something that is always set on s390x.
Note that you can still fence off pci for the _guest_ if you
provide a cpu model without the zpci feature.
Message-Id: <20190211113255.3837-1-cohuck@redhat.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: David Hildenbrand <david@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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PCIDevice pointer has been a parameter of kvm_arch_fixup_msi_route().
So we don't need to store zpci idx in msix message data to find out the
specific zpci device. Instead, we could use pci device id to find its
corresponding zpci device.
Signed-off-by: Yi Min Zhao <zyimin@linux.vnet.ibm.com>
Message-Id: <1504606380-49341-2-git-send-email-zyimin@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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The nt2 event class is pci-only - don't look for events if pci is
not in the active cpu model.
Reviewed-by: Thomas Huth <thuth@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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Some non-pci code calls into zpci code. Provide some stubs for builds
without pci.
Reviewed-by: Thomas Huth <thuth@redhat.com>
Acked-by: Christian Borntraeger <borntraeger@de.ibm.com>
Acked-by: Halil Pasic <pasic@linux.vnet.ibm.com>
Signed-off-by: Cornelia Huck <cohuck@redhat.com>
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