On 05/16/2018 04:21 AM, Pierre Morel wrote:
On 07/05/2018 17:11, Tony Krowiak wrote:
Introduces a new AP device driver. This device driver
is built on the VFIO mediated device framework. The framework
provides sysfs interfaces that facilitate passthrough
access by guests to devices installed on the linux host.
...snip...
+static int vfio_ap_queue_dev_probe(struct ap_device *apdev)
+{
You should take care of the ap devices when they are added or removed
from the matrix.
I suggest you add a remove callback to avoid unbinding a queue while
it is assigned to a guest.
This is not possible without a change to the AP bus. The remove callback
returns void, so there is no way to indicate to the AP bus not to remove
the queue device. I'll talk to Harald about this.
+ return 0;
+}
+
+static void vfio_ap_matrix_dev_release(struct device *dev)
+{
+ struct ap_matrix *ap_matrix = dev_get_drvdata(dev);
+
+ kfree(ap_matrix);
+}
...snip...
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