Re: [libvirt] [PATCH v3 00/12] PCI passthrough support on s390
On Tue, 2018-08-07 at 17:10 +0800, Yi Min Zhao wrote:
Abstract
========
The PCI representation in QEMU has recently been extended for S390
allowing configuration of zPCI attributes like uid (user-defined
identifier) and fid (PCI function identifier).
The details can be found here:
https://lists.gnu.org/archive/html/qemu-devel/2016-06/msg07262.html
To support the new zPCI feature of the S390 platform, two new XML
attributes, @uid and @fid, are introduced for device addresses of type
'pci', i.e.:
<hostdev mode='subsystem' type='pci'>
<driver name='vfio'/>
<source>
<address domain='0x0001' bus='0x00' slot='0x00'
function='0x0'/>
</source>
<address type='pci' domain='0x0000' bus='0x00'
slot='0x01' function='0x0'
uid='0x0003' fid='0x00000027'/>
</hostdev>
Overall thoughts on the series: the direction is good and the
design looks solid, but there are still a few questions regarding
the implementation that we'll need to figure out.
We also need someone experienced in the area to look over the
hotplug part, and I would feel way more comfortable merging this
if Laine could go over the changes too... Hopefully he'll find
time to do that when v3 rolls around :)
--
Andrea Bolognani / Red Hat / Virtualization