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pci/pcie: stop plug/unplug if the slot is locked

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We better stop right away. For now, errors would be partially ignored
(so the guest might get informed or the device might get unplugged),
although actual plug/unplug will be reported as failed to the user.

While at it, properly move the check to the pre_plug handler for the plug
case, as we can test the slot state before the device will be realized.

Reviewed-by: Igor Mammedov <imammedo@redhat.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: David Hildenbrand <david@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
David Hildenbrand 2018-12-12 10:16:16 +01:00 • committed by Michael S. Tsirkin
parent 89bd861c2b
commit b9731850d7
3 changed files with 20 additions and 8 deletions
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1
hw/pci/pcie_port.c
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@ -154,6 +154,7 @@ static void pcie_slot_class_init(ObjectClass *oc, void *data)
HotplugHandlerClass *hc = HOTPLUG_HANDLER_CLASS(oc);
dc->props = pcie_slot_props;
hc->pre_plug = pcie_cap_slot_pre_plug_cb;
hc->plug = pcie_cap_slot_plug_cb;
hc->unplug = pcie_cap_slot_unplug_cb;
hc->unplug_request = pcie_cap_slot_unplug_request_cb;