Bug 2025872

Summary: VM with a PCI host device and max vCPUs >= 256 fails to start
Product: Red Hat Enterprise Virtualization Manager Reporter: Arik <ahadas>
Component: ovirt-engineAssignee: Milan Zamazal <mzamazal>
Status: CLOSED ERRATA QA Contact: Nisim Simsolo <nsimsolo>
Severity: high Docs Contact:
Priority: unspecified    
Version: 4.4.8CC: ahadas, apinnick, bugs, emarcus, gilboad, michal.skrivanek, mperina, mzamazal, nsimsolo
Target Milestone: ovirt-4.4.10Keywords: ZStream
Target Release: 4.4.10   
Hardware: Unspecified   
OS: Unspecified   
Whiteboard:
Fixed In Version: ovirt-engine-4.4.10.1 Doc Type: Bug Fix
Doc Text:
Previously, certain CPU topologies caused virtual machines with PCI host devices to fail. In this release, the issue has been fixed.
Story Points: ---
Clone Of: 2023313 Environment:
Last Closed: 2022-02-08 10:04:44 UTC Type: ---
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: Virt RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:
Bug Depends On: 2023313    
Bug Blocks:    

Comment 3 Nisim Simsolo 2022-01-18 17:39:28 UTC
Verified:
ovirt-engine-4.4.10.2-0.1.el8ev
vdsm-4.40.90.4-1.el8ev.x86_64
qemu-kvm-6.0.0-33.module+el8.5.0+13041+05be2dc6.x86_64
libvirt-daemon-7.6.0-6.module+el8.5.0+13051+7ddbe958.x86_64

Verification scenario:
1. Create VM with VFIO and 16 total virtual CPUs (1 socket and 16 cores per socket)
2. Run VM and verify VM is running.
3. Observe VM xml and verify caching=on:
 <iommu model="intel">
            <driver caching_mode="on" eim="on" intremap="on" />
        </iommu>
4. Repeat steps 1-3, this time use 24 CPus and 32 CPUs.

Comment 7 errata-xmlrpc 2022-02-08 10:04:44 UTC
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.

For information on the advisory (RHV Manager (ovirt-engine) [ovirt-4.4.10]), and where to find the updated
files, follow the link below.

If the solution does not work for you, open a new bug report.

https://access.redhat.com/errata/RHBA-2022:0461