Bug 2003910

Summary:	The vm with 12 vfs can not be started successfully.
Product:	Red Hat Enterprise Linux 9	Reporter:	Yanghang Liu <yanghliu>
Component:	qemu-kvm	Assignee:	Virtualization Maintenance <virt-maint>
qemu-kvm sub component:	Devices	QA Contact:	Yanghang Liu <yanghliu>
Status:	CLOSED DUPLICATE	Docs Contact:
Severity:	high
Priority:	high	CC:	virt-maint
Version:	9.0	Keywords:	Regression
Target Milestone:	rc	Flags:	pm-rhel: mirror+
Target Release:	---
Hardware:	x86_64
OS:	Linux
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:		Environment:
Last Closed:	2021-09-14 07:25:58 UTC	Type:	---
Regression:	---	Mount Type:	---
Documentation:	---	CRM:
Verified Versions:		Category:	---
oVirt Team:	---	RHEL 7.3 requirements from Atomic Host:
Cloudforms Team:	---	Target Upstream Version:
Embargoed:

Description Yanghang Liu 2021-09-14 06:53:22 UTC

Description of problem:
The vm with multiple vfs (vf numbers > 12)can not be started successfully.

Version-Release number of selected component (if applicable):
host:
5.14.0-1.el9.x86_64
qemu-kvm-6.1.0-2.el9.x86_64
guest:
5.14.0-1.el9.x86_64

How reproducible:
100%

Steps to Reproduce:

1. create 12 VFs

echo 12 > /sys/bus/pci/devices/0000\:06\:00.1/sriov_numvfs 

2. start a RHEL90 vm with 12 VFs

The domaim xml is in the attachment

Actual results:
The vm is stuck on "Guest has not initialized the diaplay (yet)" page

Expected results:
The vm can be started successfully

Additional info:
(1) The vm with 11 vfs can be started successfully.

Comment 2 Yanghang Liu 2021-09-14 07:23:03 UTC

This bug can be reproduced in qemu-kvm-6.1.0-1.el9.x86_64 and qemu-kvm-6.1.0-2.el9.x86_64.

The bug can not be reproduced in qemu-kvm-6.0.0-12.el9.x86_64

Comment 3 Yanghang Liu 2021-09-14 07:25:58 UTC

This bug should be a duplicate bug of Bug 2001630 - [WRB][virtual network][qemu-6.1.0-1]Can not boot up guest with 14 devices via pcie-root-port.

*** This bug has been marked as a duplicate of bug 2001630 ***