On Tue, Jan 15, 2019 at 04:51:39PM +0000, Daniel P. Berrangé wrote:
On Sun, Jan 13, 2019 at 06:12:05PM -0500, Cole Robinson wrote:
<disk> devices lack the model= attribute which is used by most other device types. bus= mostly acts as one, but it serves other purposes too like determing what target= prefix to use, and for matching against controller type= values.
Extending bus= to handle additional virtio transitional devices will complicate apps lives, and it isn't a clean mapping anyways. So let's bite the bullet and add a new <disk model=X/> attribute, and wire up common handling for virtio-{non-}transitional
Signed-off-by: Cole Robinson <crobinso@redhat.com> --- docs/formatdomain.html.in | 8 ++++ docs/schemas/domaincommon.rng | 8 ++++ src/conf/domain_conf.c | 28 +++++++++++++ src/conf/domain_conf.h | 10 +++++ src/libvirt_private.syms | 2 + ...virtio-non-transitional.x86_64-latest.args | 34 +++++++++++++++ .../virtio-non-transitional.xml | 26 ++++++++++++ .../virtio-transitional.x86_64-latest.args | 34 +++++++++++++++ .../qemuxml2argvdata/virtio-transitional.xml | 26 ++++++++++++ tests/qemuxml2argvtest.c | 3 ++ .../virtio-non-transitional.xml | 42 +++++++++++++++++++ .../virtio-transitional.xml | 42 +++++++++++++++++++ tests/qemuxml2xmltest.c | 3 ++ 13 files changed, 266 insertions(+) create mode 100644 tests/qemuxml2argvdata/virtio-non-transitional.x86_64-latest.args create mode 100644 tests/qemuxml2argvdata/virtio-non-transitional.xml create mode 100644 tests/qemuxml2argvdata/virtio-transitional.x86_64-latest.args create mode 100644 tests/qemuxml2argvdata/virtio-transitional.xml create mode 100644 tests/qemuxml2xmloutdata/virtio-non-transitional.xml create mode 100644 tests/qemuxml2xmloutdata/virtio-transitional.xml
diff --git a/docs/formatdomain.html.in b/docs/formatdomain.html.in index 7f07bb7f55..5220e19417 100644 --- a/docs/formatdomain.html.in +++ b/docs/formatdomain.html.in @@ -2922,6 +2922,14 @@ <span class="since">Since 0.1.4</span> </p> </dd> + <dt><code>model</code></dt> + <dd> + Indicates the emulated device model of the disk. Typically + this is indicated solely by the <code>bus</code> property but + for <code>bus</code> "virtio" the model can be specified further + with "virtio-transitional" or "virtio-non-transitional" + <span class="since">Since 5.1.0</span>
We should note that this is *only* valid when using a <adress type=pci> because the virtio-*ccw and virtio-*mmio don't support these.
In fact I wonder if that's good a reason to call them
"virtio-pci-transitional" and "virtio-pci-non-transitional"
The patch 6 made me re-consider whether this is good or not, as for other existing devices we generally auto-add -pci -ccw or -mmio as needed. Perhaps just using documentation is sufficient. Regards, Daniel -- |: https://berrange.com -o- https://www.flickr.com/photos/dberrange :| |: https://libvirt.org -o- https://fstop138.berrange.com :| |: https://entangle-photo.org -o- https://www.instagram.com/dberrange :|