diff options
| author | David Woodhouse <dwmw@amazon.co.uk> | 2023-10-14 16:53:23 +0100 |
|---|---|---|
| committer | David Woodhouse <dwmw@amazon.co.uk> | 2023-11-07 08:54:20 +0000 |
| commit | 523b6b3abac928ff3574d8a45df58d29bd8ae454 (patch) | |
| tree | f119ff0ac6ee7a048affe33500daf5c435c78653 /hw/xen | |
| parent | d3256f88d988809ae006aa28d6df88b37b253bc1 (diff) | |
| download | qemu-523b6b3abac928ff3574d8a45df58d29bd8ae454.zip qemu-523b6b3abac928ff3574d8a45df58d29bd8ae454.tar.gz qemu-523b6b3abac928ff3574d8a45df58d29bd8ae454.tar.bz2 | |
hw/xen: add get_frontend_path() method to XenDeviceClass
The primary Xen console is special. The guest's side is set up for it by
the toolstack automatically and not by the standard PV init sequence.
Accordingly, its *frontend* doesn't appear in …/device/console/0 either;
instead it appears under …/console in the guest's XenStore node.
To allow the Xen console driver to override the frontend path for the
primary console, add a method to the XenDeviceClass which can be used
instead of the standard xen_device_get_frontend_path()
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
Diffstat (limited to 'hw/xen')
| -rw-r--r-- | hw/xen/xen-bus.c | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/hw/xen/xen-bus.c b/hw/xen/xen-bus.c index ece8ec4..12ff782 100644 --- a/hw/xen/xen-bus.c +++ b/hw/xen/xen-bus.c @@ -711,8 +711,17 @@ static void xen_device_frontend_create(XenDevice *xendev, Error **errp) { ERRP_GUARD(); XenBus *xenbus = XEN_BUS(qdev_get_parent_bus(DEVICE(xendev))); + XenDeviceClass *xendev_class = XEN_DEVICE_GET_CLASS(xendev); - xendev->frontend_path = xen_device_get_frontend_path(xendev); + if (xendev_class->get_frontend_path) { + xendev->frontend_path = xendev_class->get_frontend_path(xendev, errp); + if (!xendev->frontend_path) { + error_prepend(errp, "failed to create frontend: "); + return; + } + } else { + xendev->frontend_path = xen_device_get_frontend_path(xendev); + } /* * The frontend area may have already been created by a legacy |