From: "Dr. David Alan Gilbert" <dgilb...@redhat.com> 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 <dgilb...@redhat.com> Message-Id: <20230109105809.163975-1-dgilb...@redhat.com> Reviewed-by: Michael S. Tsirkin <m...@redhat.com> Signed-off-by: Michael S. Tsirkin <m...@redhat.com> Reviewed-by: Thomas Huth <th...@redhat.com> Acked-by: David Daney <david.da...@fungible.com> Fixes: 9ea02e8f1 ("virtio-rng-pci: Allow setting nvectors, so we can use MSI-X") Signed-off-by: Dr. David Alan Gilbert <dgilb...@redhat.com> Reviewed-by: Philippe Mathieu-Daudé <phi...@linaro.org> (cherry picked from commit bad9c5a5166fd5e3a892b7b0477cf2f4bd3a959a) Signed-off-by: Michael Tokarev <m...@tls.msk.ru> --- hw/core/machine.c | 1 + 1 file changed, 1 insertion(+) diff --git a/hw/core/machine.c b/hw/core/machine.c index 8d34caa31d..77a0a131d1 100644 --- a/hw/core/machine.c +++ b/hw/core/machine.c @@ -42,6 +42,7 @@ 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); -- 2.30.2
