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Bug 1498754 - Definition of HW_COMPAT_RHEL7_3 is not correct
Definition of HW_COMPAT_RHEL7_3 is not correct
Status: CLOSED ERRATA
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm-rhev (Show other bugs)
7.5
All Linux
unspecified Severity unspecified
: rc
: ---
Assigned To: Laurent Vivier
jingzhao
:
Depends On:
Blocks:
  Show dependency tree / graph
 
Reported: 2017-10-05 03:27 EDT by Laurent Vivier
Modified: 2018-04-10 20:40 EDT (History)
9 users (show)

See Also:
Fixed In Version: qemu-kvm-rhev-2.10.0-2.el7
Doc Type: If docs needed, set a value
Doc Text:
Story Points: ---
Clone Of:
Environment:
Last Closed: 2018-04-10 20:38:42 EDT
Type: Bug
Regression: ---
Mount Type: ---
Documentation: ---
CRM:
Verified Versions:
Category: ---
oVirt Team: ---
RHEL 7.3 requirements from Atomic Host:
Cloudforms Team: ---

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External Trackers
Tracker ID Priority Status Summary Last Updated
Red Hat Product Errata RHSA-2018:1104 None None None 2018-04-10 20:40 EDT

  None (edit)
Description Laurent Vivier 2017-10-05 03:27:17 EDT 
Description of problem:

Rebase of 2.10.0 has moved:

    },{ /* HW_COMPAT_RHEL7_3 */ \
        .driver   = "virtio-net-device",\
        .property = "x-mtu-bypass-backend",\
        .value    = "off",\
    },

to HW_COMPAT_2_1 instead of HW_COMPAT_RHEL7_3.
Comment 1 Miroslav Rezanina 2017-10-13 06:25:50 EDT 
Fix included in qemu-kvm-rhev-2.10.0-2.el7
Comment 5 huiqingding 2017-12-11 02:52:59 EST 
Thanks Laurent.

Test all pc machine type for "qemu-kvm-rhev-2.10.0-10.el7.x86_64". Only for "pc-i440fx-rhel7.5.0/pc-i440fx-rhel7.4.0" and "pc-q35-rhel7.5.0/pc-q35-rhel7.4.0", x-mtu-bypass-backend is true, for other machine type, it is false.

# /usr/libexec/qemu-kvm -M ?
Supported machines are:
pc                   RHEL 7.5.0 PC (i440FX + PIIX, 1996) (alias of pc-i440fx-rhel7.5.0)
pc-i440fx-rhel7.5.0  RHEL 7.5.0 PC (i440FX + PIIX, 1996) (default)
pc-i440fx-rhel7.4.0  RHEL 7.4.0 PC (i440FX + PIIX, 1996)
pc-i440fx-rhel7.3.0  RHEL 7.3.0 PC (i440FX + PIIX, 1996)
pc-i440fx-rhel7.2.0  RHEL 7.2.0 PC (i440FX + PIIX, 1996)
pc-i440fx-rhel7.1.0  RHEL 7.1.0 PC (i440FX + PIIX, 1996)
pc-i440fx-rhel7.0.0  RHEL 7.0.0 PC (i440FX + PIIX, 1996)
rhel6.6.0            RHEL 6.6.0 PC
rhel6.5.0            RHEL 6.5.0 PC
rhel6.4.0            RHEL 6.4.0 PC
rhel6.3.0            RHEL 6.3.0 PC
rhel6.2.0            RHEL 6.2.0 PC
rhel6.1.0            RHEL 6.1.0 PC
rhel6.0.0            RHEL 6.0.0 PC
q35                  RHEL-7.5.0 PC (Q35 + ICH9, 2009) (alias of pc-q35-rhel7.5.0)
pc-q35-rhel7.5.0     RHEL-7.5.0 PC (Q35 + ICH9, 2009)
pc-q35-rhel7.4.0     RHEL-7.4.0 PC (Q35 + ICH9, 2009)
pc-q35-rhel7.3.0     RHEL-7.3.0 PC (Q35 + ICH9, 2009)
none                 empty machine

# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults -M pc -nographic -device virtio-net-pci -S -monitor stdio |  grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = true

# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults -M pc-i440fx-rhel7.5.0 -nographic -device virtio-net-pci -S -monitor stdio |  grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = true

# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults -M pc-i440fx-rhel7.4.0 -nographic -device virtio-net-pci -S -monitor stdio |  grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = true

# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults -M pc-i440fx-rhel7.3.0 -nographic -device virtio-net-pci -S -monitor stdio |  grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = false

# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults -M pc-i440fx-rhel7.2.0 -nographic -device virtio-net-pci -S -monitor stdio |  grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = false

# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults -M pc-i440fx-rhel7.1.0 -nographic -device virtio-net-pci -S -monitor stdio |  grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = false

# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults -M pc-i440fx-rhel7.0.0 -nographic -device virtio-net-pci -S -monitor stdio |  grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = false

# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults -M rhel6.6.0 -nographic -device virtio-net-pci -S -monitor stdio |  grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = false

# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults -M rhel6.5.0 -nographic -device virtio-net-pci -S -monitor stdio |  grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = false

# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults -M rhel6.4.0 -nographic -device virtio-net-pci -S -monitor stdio |  grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = false

# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults -M rhel6.3.0 -nographic -device virtio-net-pci -S -monitor stdio |  grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = false

# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults -M rhel6.2.0 -nographic -device virtio-net-pci -S -monitor stdio |  grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = false

# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults -M rhel6.1.0 -nographic -device virtio-net-pci -S -monitor stdio |  grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = false

# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults -M rhel6.0.0 -nographic -device virtio-net-pci -S -monitor stdio |  grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = false

# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults -M q35 -nographic -device virtio-net-pci -S -monitor stdio |  grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = true

# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults -M pc-q35-rhel7.5.0 -nographic -device virtio-net-pci -S -monitor stdio |  grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = true

# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults -M pc-q35-rhel7.4.0 -nographic -device virtio-net-pci -S -monitor stdio |  grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = true

# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults -M pc-q35-rhel7.3.0 -nographic -device virtio-net-pci -S -monitor stdio |  grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = false
Comment 7 Qunfang Zhang 2017-12-12 03:03:39 EST 
Verified on Power8 host with the following packages:

kernel-3.10.0-814.el7.ppc64le
qemu-kvm-rhev-2.10.0-12.el7.ppc64le

[root@ibm-p8-07 ~]# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults \
>   -M pseries-rhel7.2.0 -nographic -device virtio-net -S -monitor stdio | \
>   grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = false
[root@ibm-p8-07 ~]# 
[root@ibm-p8-07 ~]# printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults \
>   -M pseries-rhel7.3.0 -nographic -device virtio-net -S -monitor stdio | \
>   grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = false
[root@ibm-p8-07 ~]# 
[root@ibm-p8-07 ~]# 
[root@ibm-p8-07 ~]#  printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults \
>   -M pseries-rhel7.4.0 -nographic -device virtio-net -S -monitor stdio | \
>   grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = true
[root@ibm-p8-07 ~]# 
[root@ibm-p8-07 ~]# 
[root@ibm-p8-07 ~]#  printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults \
>   -M pseries -nographic -device virtio-net -S -monitor stdio | \
>   grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = true

[root@ibm-p8-07 ~]#  printf "info qtree\nq\n" | /usr/libexec/qemu-kvm -nodefaults   -M pseries-rhel7.5.0 -nographic -device virtio-net -S -monitor stdio |   grep x-mtu-bypass-backend
Warning: nic virtio-net-pci.0 has no peer
            x-mtu-bypass-backend = true
Comment 8 Qunfang Zhang 2017-12-12 03:04:46 EST 
Setting to VERIFIED according to comment 5 and comment 7.
Comment 11 errata-xmlrpc 2018-04-10 20:38:42 EDT 
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/RHSA-2018:1104
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