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Message-Id: <25e6c874-231f-b50b-0389-d76bf44bb40f@linux.vnet.ibm.com>
Date: Wed, 16 May 2018 07:29:13 -0400
From: Tony Krowiak <akrowiak@...ux.vnet.ibm.com>
To: pmorel@...ux.ibm.com, linux-s390@...r.kernel.org,
linux-kernel@...r.kernel.org, kvm@...r.kernel.org
Cc: freude@...ibm.com, schwidefsky@...ibm.com,
heiko.carstens@...ibm.com, borntraeger@...ibm.com,
cohuck@...hat.com, kwankhede@...dia.com,
bjsdjshi@...ux.vnet.ibm.com, pbonzini@...hat.com,
alex.williamson@...hat.com, pmorel@...ux.vnet.ibm.com,
alifm@...ux.vnet.ibm.com, mjrosato@...ux.vnet.ibm.com,
jjherne@...ux.vnet.ibm.com, thuth@...hat.com,
pasic@...ux.vnet.ibm.com, berrange@...hat.com,
fiuczy@...ux.vnet.ibm.com, buendgen@...ibm.com
Subject: Re: [PATCH v5 04/13] s390: vfio-ap: base implementation of VFIO AP
device driver
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.
That makes sense, will do.
>
>
>> + 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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