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Bug 1446570 - enable qemu-xhci USB3 controller device model for the aarch64 target
Summary: enable qemu-xhci USB3 controller device model for the aarch64 target
Keywords:
Status: CLOSED CURRENTRELEASE
Alias: None
Product: Red Hat Enterprise Linux 7
Classification: Red Hat
Component: qemu-kvm
Version: 7.4
Hardware: aarch64
OS: Unspecified
low
unspecified
Target Milestone: rc
: 7.4-Alt
Assignee: Miroslav Rezanina
QA Contact: Virtualization Bugs
URL:
Whiteboard:
Depends On:
Blocks: 1173755 1438682 1451189
TreeView+ depends on / blocked
 
Reported: 2017-04-28 11:10 UTC by Laszlo Ersek
Modified: 2020-03-09 19:09 UTC (History)
12 users (show)

Fixed In Version: qemu-kvm-rhev-2.9.0-6.el7
Doc Type: If docs needed, set a value
Doc Text:
Clone Of:
: 1451189 (view as bug list)
Environment:
Last Closed: 2020-03-09 19:09:29 UTC
Target Upstream Version:
Embargoed:

Attachments (Terms of Use)

Description Laszlo Ersek 2017-04-28 11:10:32 UTC 
* Description of problem:

$ /usr/libexec/qemu-kvm -M virt-rhel7.4.0 -device nec-usb-xhci,\?
qemu-kvm: -device nec-usb-xhci,?: Device 'nec-usb-xhci' not found

* Version-Release number of selected component (if applicable):
qemu-kvm-rhev-2.9.0-1.el7.aarch64

* How reproducible:
always

* Additional info:
On my x86_64 laptop, using the same build:

$ /usr/libexec/qemu-kvm -M pc-q35-rhel7.4.0 -device nec-usb-xhci,\?
[bunch of properties]

Vaguely related: bug 1438682.
Comment 4 Andrea Bolognani 2017-04-28 12:24:23 UTC 
(In reply to Laszlo Ersek from comment #0)
> Vaguely related: bug 1438682

That bug is more than vaguely related: since it's going to
be fixed really soon (it's in POST already) I believe there
is no need to drag nec-usb-xhci back in, as libvirt will
pick qemu-xhci over it anyway.
Comment 5 Miroslav Rezanina 2017-05-09 15:20:10 UTC 
There were no xhci support in RHEL aarch64 qemu-kvm-rhev. We need to add any in case we want to use it.
Comment 6 Laszlo Ersek 2017-05-09 15:27:44 UTC 
In today's virt-arm call Mirek confirmed we never had the NEC controller enabled for the aarch64 target in downstream, so this is not a regression. Instead, it is an RFE.

And then, we should enable the qemu-xhci flavor instead.
Comment 7 Miroslav Rezanina 2017-05-15 11:37:59 UTC 
Do we want to enable qemu-xhci and keep nec-usb-xhci disabled? 

As both of the devices are enabled toegether in 2.9.0 we would need add way to be able to select supported xhci device(s). I would like to avoid this change unless we really need only qemu-xhci.
Comment 8 Andrea Bolognani 2017-05-15 13:08:40 UTC 
I think it's okay to compile both in, libvirt will
prefer qemu-xhci anyway.
Comment 9 Andrew Jones 2017-05-15 14:42:28 UTC 
(In reply to Miroslav Rezanina from comment #7)
> Do we want to enable qemu-xhci and keep nec-usb-xhci disabled? 
> 
> As both of the devices are enabled toegether in 2.9.0 we would need add way
> to be able to select supported xhci device(s). I would like to avoid this
> change unless we really need only qemu-xhci.

OK for now, but let's clone this bug to track upstream work that will allow us to untangle them. As usual we don't want to compile code that we don't want to support, and we don't want to support nec-usb-xhci on aarch64.
Comment 11 Miroslav Rezanina 2017-05-23 08:14:49 UTC 
Fix included in qemu-kvm-rhev-2.9.0-6.el7
Comment 18 Luiz Capitulino 2020-03-09 19:09:29 UTC 
This BZ is being closed as CURRENTRELEASE because it falls
into the following criteria:

o It's an aarch64 virt BZ for RHEL7
o It's on ON_QA or VERIFIED state
o Resolution seems to be in place for some years

If you have objections, please add a comment or re-open the BZ.
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