Bug 2224964

Summary: after windows guest failover vf migration with non-intel adapters, the network can't work, unless adding '-global ICH9-LPC.acpi-pci-hotplug-with-bridge-support=off'
Product: Red Hat Enterprise Linux 9 Reporter: Yanhui Ma <yama>
Component: qemu-kvmAssignee: ybendito
qemu-kvm sub component: General QA Contact: Yanhui Ma <yama>
Status: POST --- Docs Contact:
Severity: medium    
Priority: medium CC: chayang, coli, jinzhao, juzhang, leiyang, virt-maint, ybendito, yvugenfi
Version: 9.3Keywords: MigratedToJIRA, Triaged
Target Milestone: rc   
Target Release: ---   
Hardware: x86_64   
OS: Windows   
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Description Yanhui Ma 2023-07-24 05:23:29 UTC 
Description of problem:

Windows guest failover vf migraiton with BCM57810, MT2892, QL41000 and SFC9220, the network can't work. If adding '-global ICH9-LPC.acpi-pci-hotplug-with-bridge-support=off', then network works well.

No the issue for intel cards 82599ES and XXV710.

No the issue for rhel guest.

Version-Release number of selected component (if applicable):

qemu-kvm-7.2.0-14.el9_2.x86_64
virtio-win driver:
100.93.104.23900

How reproducible:
100%

Steps to Reproduce:
1.please see https://bugzilla.redhat.com/show_bug.cgi?id=2090712, the steps and results are the same as the it.
2.
3.

Actual results:

Expected results:

Additional info:

No the issue for intel cards 82599ES and XXV710.

No the issue for rhel guest.
Comment 1 Yanhui Ma 2023-07-25 06:48:19 UTC 
According to Yuri's slack message, change the component to qemu-kvm and assign the bug to him.
Comment 2 ybendito 2023-08-06 06:53:34 UTC 
Merged upstream https://github.com/qemu/qemu/commit/348e354417b64c484877354ee7cc66f29fa6c7df
Also queued to stable qemu 8.0 and 7.2