KVM Archive on lore.kernel.org
 help / color / Atom feed
From: Tony Krowiak <akrowiak@linux.ibm.com>
To: Cornelia Huck <cohuck@redhat.com>
Cc: linux-s390@vger.kernel.org, linux-kernel@vger.kernel.org,
	kvm@vger.kernel.org, freude@linux.ibm.com,
	borntraeger@de.ibm.com, frankja@linux.ibm.com, david@redhat.com,
	mjrosato@linux.ibm.com, schwidefsky@de.ibm.com,
	heiko.carstens@de.ibm.com, pmorel@linux.ibm.com,
	pasic@linux.ibm.com, alex.williamson@redhat.com,
	kwankhede@nvidia.com
Subject: Re: [PATCH v4 1/7] s390: vfio-ap: Refactor vfio_ap driver probe and remove callbacks
Date: Wed, 19 Jun 2019 08:31:58 -0400
Message-ID: <b4a77364-3924-20d7-42cd-e011106e0301@linux.ibm.com> (raw)
In-Reply-To: <20190618181456.0252227b.cohuck@redhat.com>

On 6/18/19 12:14 PM, Cornelia Huck wrote:
> On Thu, 13 Jun 2019 15:39:34 -0400
> Tony Krowiak <akrowiak@linux.ibm.com> wrote:
> 
>> In order to limit the number of private mdev functions called from the
>> vfio_ap device driver as well as to provide a landing spot for dynamic
>> configuration code related to binding/unbinding AP queue devices to/from
>> the vfio_ap driver, the following changes are being introduced:
>>
>> * Move code from the vfio_ap driver's probe callback into a function
>>    defined in the mdev private operations file.
>>
>> * Move code from the vfio_ap driver's remove callback into a function
>>    defined in the mdev private operations file.
>>
>> Signed-off-by: Tony Krowiak <akrowiak@linux.ibm.com>
>> ---
>>   drivers/s390/crypto/vfio_ap_drv.c     | 27 ++++++++++-----------------
>>   drivers/s390/crypto/vfio_ap_ops.c     | 28 ++++++++++++++++++++++++++++
>>   drivers/s390/crypto/vfio_ap_private.h |  6 +++---
>>   3 files changed, 41 insertions(+), 20 deletions(-)
>>
>> diff --git a/drivers/s390/crypto/vfio_ap_drv.c b/drivers/s390/crypto/vfio_ap_drv.c
>> index 003662aa8060..3c60df70891b 100644
>> --- a/drivers/s390/crypto/vfio_ap_drv.c
>> +++ b/drivers/s390/crypto/vfio_ap_drv.c
>> @@ -49,15 +49,15 @@ MODULE_DEVICE_TABLE(vfio_ap, ap_queue_ids);
>>    */
>>   static int vfio_ap_queue_dev_probe(struct ap_device *apdev)
>>   {
>> -	struct vfio_ap_queue *q;
>> -
>> -	q = kzalloc(sizeof(*q), GFP_KERNEL);
>> -	if (!q)
>> -		return -ENOMEM;
>> -	dev_set_drvdata(&apdev->device, q);
>> -	q->apqn = to_ap_queue(&apdev->device)->qid;
>> -	q->saved_isc = VFIO_AP_ISC_INVALID;
>> +	int ret;
>> +	struct ap_queue *queue = to_ap_queue(&apdev->device);
>> +
>> +	ret = vfio_ap_mdev_probe_queue(queue);
>> +	if (ret)
>> +		return ret;
>> +
>>   	return 0;
>> +
> 
> Maybe you could even condense this into a simple
> 
> return vfio_ap_mdev_probe_queue(to_ap_queue(&apdev->device));
> 
> (Unless you plan to do more things with queue in a future patch, of
> course.)

Consider it done.

> 
>>   }
>>   
>>   /**
> 
> (...)
> 
>> diff --git a/drivers/s390/crypto/vfio_ap_private.h b/drivers/s390/crypto/vfio_ap_private.h
>> index f46dde56b464..5cc3c2ebf151 100644
>> --- a/drivers/s390/crypto/vfio_ap_private.h
>> +++ b/drivers/s390/crypto/vfio_ap_private.h
>> @@ -90,8 +90,6 @@ struct ap_matrix_mdev {
>>   
>>   extern int vfio_ap_mdev_register(void);
>>   extern void vfio_ap_mdev_unregister(void);
>> -int vfio_ap_mdev_reset_queue(unsigned int apid, unsigned int apqi,
>> -			     unsigned int retry);
> 
> If you don't need that function across files anymore, you probably want
> to make it static.

Yes.

> 
>>   
>>   struct vfio_ap_queue {
>>   	struct ap_matrix_mdev *matrix_mdev;
>> @@ -100,5 +98,7 @@ struct vfio_ap_queue {
>>   #define VFIO_AP_ISC_INVALID 0xff
>>   	unsigned char saved_isc;
>>   };
>> -struct ap_queue_status vfio_ap_irq_disable(struct vfio_ap_queue *q);
> 
> Same here.

Yes again.

> 
>> +int vfio_ap_mdev_probe_queue(struct ap_queue *queue);
>> +void vfio_ap_mdev_remove_queue(struct ap_queue *queue);
>> +
>>   #endif /* _VFIO_AP_PRIVATE_H_ */
> 


  reply index

Thread overview: 32+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-06-13 19:39 [PATCH v4 0/7] s390: vfio-ap: dynamic configuration support Tony Krowiak
2019-06-13 19:39 ` [PATCH v4 1/7] s390: vfio-ap: Refactor vfio_ap driver probe and remove callbacks Tony Krowiak
2019-06-17  8:27   ` Harald Freudenberger
2019-06-17 14:24     ` Tony Krowiak
2019-06-18 16:14   ` Cornelia Huck
2019-06-19 12:31     ` Tony Krowiak [this message]
2019-06-13 19:39 ` [PATCH v4 2/7] s390: vfio-ap: wait for queue empty on queue reset Tony Krowiak
2019-06-17  8:47   ` Harald Freudenberger
2019-06-17 14:29     ` Tony Krowiak
2019-06-13 19:39 ` [PATCH v4 3/7] s390: zcrypt: driver callback to indicate resource in use Tony Krowiak
2019-06-17  9:28   ` Harald Freudenberger
2019-06-17 14:37     ` Tony Krowiak
2019-06-18 16:25   ` Cornelia Huck
2019-06-19 13:04     ` Tony Krowiak
2019-06-26 21:13       ` Tony Krowiak
2019-06-27  7:25         ` Cornelia Huck
2019-06-27 12:59           ` Tony Krowiak
2019-07-01 19:26       ` Cornelia Huck
2019-07-08 14:27         ` Tony Krowiak
2019-07-09 10:49           ` Cornelia Huck
2019-07-09 21:11             ` Tony Krowiak
2019-06-13 19:39 ` [PATCH v4 4/7] s390: vfio-ap: implement in-use callback for vfio_ap driver Tony Krowiak
2019-06-13 19:39 ` [PATCH v4 5/7] s390: vfio-ap: allow assignment of unavailable AP resources to mdev device Tony Krowiak
2019-06-17 10:05   ` Harald Freudenberger
2019-06-17 15:07     ` Tony Krowiak
2019-06-18  6:49       ` Harald Freudenberger
2019-06-19 13:39         ` Tony Krowiak
2019-06-13 19:39 ` [PATCH v4 6/7] s390: vfio-ap: allow hot plug/unplug of AP resources using " Tony Krowiak
2019-06-13 19:39 ` [PATCH v4 7/7] s390: vfio-ap: update documentation Tony Krowiak
2019-06-17 11:42   ` Harald Freudenberger
2019-06-17 15:21     ` Tony Krowiak
2019-07-09 15:30 ` [PATCH v4 0/7] s390: vfio-ap: dynamic configuration support Halil Pasic

Reply instructions:

You may reply publically to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=b4a77364-3924-20d7-42cd-e011106e0301@linux.ibm.com \
    --to=akrowiak@linux.ibm.com \
    --cc=alex.williamson@redhat.com \
    --cc=borntraeger@de.ibm.com \
    --cc=cohuck@redhat.com \
    --cc=david@redhat.com \
    --cc=frankja@linux.ibm.com \
    --cc=freude@linux.ibm.com \
    --cc=heiko.carstens@de.ibm.com \
    --cc=kvm@vger.kernel.org \
    --cc=kwankhede@nvidia.com \
    --cc=linux-kernel@vger.kernel.org \
    --cc=linux-s390@vger.kernel.org \
    --cc=mjrosato@linux.ibm.com \
    --cc=pasic@linux.ibm.com \
    --cc=pmorel@linux.ibm.com \
    --cc=schwidefsky@de.ibm.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

KVM Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/kvm/0 kvm/git/0.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 kvm kvm/ https://lore.kernel.org/kvm \
		kvm@vger.kernel.org kvm@archiver.kernel.org
	public-inbox-index kvm


Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.kernel.vger.kvm


AGPL code for this site: git clone https://public-inbox.org/ public-inbox