[libvirt] [PATCH] check/add for mdev_types capability

[Erik Skultety]

On Tue, Jan 16, 2018 at 12:04:53AM -0500, Dan Zheng wrote:
> >From be62ea5394d52fa168079edc3aa7e558363a3026 Mon Sep 17 00:00:00 2001
> From: Dan Zheng <dzheng at redhat.com>
> Date: Tue, 16 Jan 2018 12:21:21 +0800
> Subject: [PATCH] nodedev: check/add for mdev_types capability
>
> This is similar to commit f44ec9c1.
> Commit id '500cbc06' introduced a new nested capability element of type
> 'mdev_types' and the ability to use the flag as a way to search for a
> specific subset of a 'pci' device - namely a 'mdev_types'.
> The code modified the virNodeDeviceCapMatch whichs allows for
> searching using the 'virsh nodedev-list [cap]' via
> virConnectListAllNodeDevices.
>
> However, the original patches did not account for other searches for
> the same capability key from virNodeDeviceNumOfCaps and
> virNodeDeviceListCaps using nodeDeviceNumOfCaps and nodeDeviceListCaps.
>
> This patch adds the check for the 'mdev_types' bits within a 'pci'
> device and allows the following python code to find the capabilities
> for the device:
>
>     import libvirt
>     conn = libvirt.openReadOnly('qemu:///system')
>     devs = conn.listAllDevices()
>     for dev in devs:
>         if 'mdev_types' in dev.listCaps():
>             print dev.name(),dev.numOfCaps(),dev.listCaps()
>
> Signed-off-by: Dan Zheng <dzheng at redhat.com>
> ---

Reviewed-by: Erik Skultety <eskultet at redhat.com> (and safe for freeze) - I
shortened the commit message a bit before pushing.