Bug 1816793

Summary: 'edid' compat handling missing for virtio-gpu-ccw
Product: Red Hat Enterprise Linux Advanced Virtualization Reporter: Cornelia Huck <cohuck>
Component: qemu-kvmAssignee: Cornelia Huck <cohuck>
qemu-kvm sub component: Graphics QA Contact: Gu Nini <ngu>
Status: CLOSED ERRATA Docs Contact:
Severity: unspecified    
Priority: unspecified CC: coli, dhildenb, dzheng, jinzhao, juzhang, lcapitulino, ngu, qzhang, smitterl, thuth, virt-maint
Version: 8.2   
Target Milestone: rc   
Target Release: 8.2   
Hardware: s390x   
OS: Linux   
Whiteboard:
Fixed In Version: qemu-kvm-4.2.0-20.module+el8.2.1+6467+49dc3278 Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of: Environment:
Last Closed: 2020-07-28 07:12:15 UTC Type: Bug
Regression: --- Mount Type: ---
Documentation: --- CRM:
Verified Versions: Category: ---
oVirt Team: --- RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: --- Target Upstream Version:
Embargoed:

Description Cornelia Huck 2020-03-24 18:12:43 UTC 
hw_compat_rhel_8_0 contains

{ "virtio-gpu-pci", "edid", "false" },

This turns 'edid' off only for virtio-gpu-pci, but not for virtio-gpu-ccw.

'edid' needs to be turned off for virtio-gpu-ccw as well.
Comment 10 smitterl 2020-05-20 08:35:40 UTC 
Clarification:
1. edid has been enabled (for all archs), so cd /sys/devices/[css0|pciXXX]/, cat $(find . -name 'edid') should return value (s. sample data below).
2. However, this bz's change assures that when migrating from a later machine model (e.g. s390-virtio-rhel8.2.0) the compatibility check must require edid=false.

Sample output for edid on guest:
# cat $(find . -name "edid")
������I4*�(xTL�&PT����% fA03@�.�2}�x
      �QEMU Monitor
�
J�$) 
E}e`Y�
Comment 12 errata-xmlrpc 2020-07-28 07:12:15 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, 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-2020:3172