From: "Dr. David Alan Gilbert" <[email protected]> Fixup the migration compatibility for existing machine types so that they do not enable msi-x.
Symptom: (qemu) qemu: get_pci_config_device: Bad config data: i=0x34 read: 84 device: 98 cmask: ff wmask: 0 w1cmask:0 qemu: Failed to load PCIDevice:config qemu: Failed to load virtio-rng:virtio qemu: error while loading state for instance 0x0 of device '0000:00:03.0/virtio-rng' qemu: load of migration failed: Invalid argument Note: This fix will break migration from 7.2->7.2-fixed with this patch bz: https://bugzilla.redhat.com/show_bug.cgi?id=2155749 Fixes: 9ea02e8f1 ("virtio-rng-pci: Allow setting nvectors, so we can use MSI-X") Signed-off-by: Dr. David Alan Gilbert <[email protected]> Message-Id: <[email protected]> Reviewed-by: Michael S. Tsirkin <[email protected]> Signed-off-by: Michael S. Tsirkin <[email protected]> Reviewed-by: Thomas Huth <[email protected]> Acked-by: David Daney <[email protected]> Fixes: 9ea02e8f1 ("virtio-rng-pci: Allow setting nvectors, so we can use MSI-X")<br> Signed-off-by: Dr. David Alan Gilbert <<a href="mailto:[email protected]"; target="_blank">[email protected]</a>><br> Reviewed-by: Philippe Mathieu-Daudé <[email protected]> --- hw/core/machine.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/core/machine.c b/hw/core/machine.c index 616f3a207c..f7761baab5 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -46,6 +46,7 @@ const size_t hw_compat_7_2_len = G_N_ELEMENTS(hw_compat_7_2); GlobalProperty hw_compat_7_1[] = { { "virtio-device", "queue_reset", "false" }, + { "virtio-rng-pci", "vectors", "0" }, }; const size_t hw_compat_7_1_len = G_N_ELEMENTS(hw_compat_7_1); -- MST
