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author | Michael Roth <mdroth@linux.vnet.ibm.com> | 2018-12-21 01:35:30 +0100 |
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committer | David Gibson <david@gibson.dropbear.id.au> | 2019-01-09 09:28:14 +1100 |
commit | c13ee169115a4ad950e765e1bb5b9e6968aa8dfd (patch) | |
tree | e834943469e8b770acf216a48a77c6df40e2711d /block | |
parent | 999c9caf2eee66103195e1ec7580b379929db9d2 (diff) | |
download | qemu-c13ee169115a4ad950e765e1bb5b9e6968aa8dfd.zip qemu-c13ee169115a4ad950e765e1bb5b9e6968aa8dfd.tar.gz qemu-c13ee169115a4ad950e765e1bb5b9e6968aa8dfd.tar.bz2 |
pci: allow cleanup/unregistration of PCI root buses
This adds cleanup counterparts to pci_register_root_bus(),
pci_root_bus_new(), and pci_bus_irqs().
These cleanup routines are needed in the case of hotpluggable
PCIHostBridge implementations. Currently we can rely on the
object_unparent()'ing of the PCIHostState recursively unparenting
and cleaning up it's child buses, but we need explicit calls
to also:
1) remove the PCIHostState from pci_host_bridges global list.
otherwise, we risk accessing freed memory when we access
the list later
2) clean up memory allocated in pci_bus_irqs()
Both are handled outside the context of any particular bus or
host bridge's init/realize functions, making it difficult to
avoid the need for explicit cleanup functions without remodeling
how PCIHostBridges are created. So keep it simple and just add
them for now.
Cc: Michael S. Tsirkin <mst@redhat.com>
Cc: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
Reviewed-by: David Gibson <david@gibson.dropbear.id.au>
Signed-off-by: Greg Kurz <groug@kaod.org>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'block')
0 files changed, 0 insertions, 0 deletions