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From: Thomas Huth <thuth@redhat.com>
To: Cornelia Huck <cohuck@redhat.com>, Halil Pasic <pasic@linux.ibm.com>
Cc: kvm@vger.kernel.org, linux-s390@vger.kernel.org,
	Martin Schwidefsky <schwidefsky@de.ibm.com>,
	Sebastian Ott <sebott@linux.ibm.com>,
	virtualization@lists.linux-foundation.org,
	"Michael S. Tsirkin" <mst@redhat.com>,
	Christoph Hellwig <hch@infradead.org>,
	Christian Borntraeger <borntraeger@de.ibm.com>,
	Viktor Mihajlovski <mihajlov@linux.ibm.com>,
	Vasily Gorbik <gor@linux.ibm.com>,
	Janosch Frank <frankja@linux.ibm.com>,
	Claudio Imbrenda <imbrenda@linux.ibm.com>,
	Farhan Ali <alifm@linux.ibm.com>,
	Eric Farman <farman@linux.ibm.com>
Subject: Re: [PATCH 03/10] virtio/s390: enable packed ring
Date: Sun, 5 May 2019 17:13:21 +0200	[thread overview]
Message-ID: <6743e19d-9824-5533-03e9-b7aa4e0e2cc1@redhat.com> (raw)
In-Reply-To: <20190503114450.2512b121.cohuck@redhat.com>

On 03/05/2019 11.44, Cornelia Huck wrote:
> On Fri, 26 Apr 2019 20:32:38 +0200
> Halil Pasic <pasic@linux.ibm.com> wrote:
> 
>> Nothing precludes to accepting  VIRTIO_F_RING_PACKED any more.
> 
> "precludes us from accepting"
> 
>>
>> Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
>> ---
>>  drivers/s390/virtio/virtio_ccw.c | 4 +---
>>  1 file changed, 1 insertion(+), 3 deletions(-)
>>
>> diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c
>> index 42832a164546..6d989c360f38 100644
>> --- a/drivers/s390/virtio/virtio_ccw.c
>> +++ b/drivers/s390/virtio/virtio_ccw.c
>> @@ -773,10 +773,8 @@ static u64 virtio_ccw_get_features(struct virtio_device *vdev)
>>  static void ccw_transport_features(struct virtio_device *vdev)
>>  {
>>  	/*
>> -	 * There shouldn't be anything that precludes supporting packed.
>> -	 * TODO: Remove the limitation after having another look into this.
>> +	 * Currently nothing to do here.
>>  	 */
>> -	__virtio_clear_bit(vdev, VIRTIO_F_RING_PACKED);
>>  }
>>  
>>  static int virtio_ccw_finalize_features(struct virtio_device *vdev)
> 
> Not sure whether we should merge this into the previous patch instead.

In case you respin, I'd vote for squashing this into the previous patch
instead, especially since you've just added the comment in that patch.

Also, what about removing that function now completely? It's a static
function and only called once in this file, so IMHO it does not make
much sense to keep an empty function around. Or do you plan to add new
code here in the near future?

 Thomas

WARNING: multiple messages have this Message-ID (diff)
From: Thomas Huth <thuth@redhat.com>
To: Cornelia Huck <cohuck@redhat.com>, Halil Pasic <pasic@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>,
	linux-s390@vger.kernel.org, Eric Farman <farman@linux.ibm.com>,
	Claudio Imbrenda <imbrenda@linux.ibm.com>,
	kvm@vger.kernel.org, Sebastian Ott <sebott@linux.ibm.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	Farhan Ali <alifm@linux.ibm.com>,
	virtualization@lists.linux-foundation.org,
	Christoph Hellwig <hch@infradead.org>,
	Martin Schwidefsky <schwidefsky@de.ibm.com>,
	Viktor Mihajlovski <mihajlov@linux.ibm.com>,
	Janosch Frank <frankja@linux.ibm.com>
Subject: Re: [PATCH 03/10] virtio/s390: enable packed ring
Date: Sun, 5 May 2019 17:13:21 +0200	[thread overview]
Message-ID: <6743e19d-9824-5533-03e9-b7aa4e0e2cc1@redhat.com> (raw)
In-Reply-To: <20190503114450.2512b121.cohuck@redhat.com>

On 03/05/2019 11.44, Cornelia Huck wrote:
> On Fri, 26 Apr 2019 20:32:38 +0200
> Halil Pasic <pasic@linux.ibm.com> wrote:
> 
>> Nothing precludes to accepting  VIRTIO_F_RING_PACKED any more.
> 
> "precludes us from accepting"
> 
>>
>> Signed-off-by: Halil Pasic <pasic@linux.ibm.com>
>> ---
>>  drivers/s390/virtio/virtio_ccw.c | 4 +---
>>  1 file changed, 1 insertion(+), 3 deletions(-)
>>
>> diff --git a/drivers/s390/virtio/virtio_ccw.c b/drivers/s390/virtio/virtio_ccw.c
>> index 42832a164546..6d989c360f38 100644
>> --- a/drivers/s390/virtio/virtio_ccw.c
>> +++ b/drivers/s390/virtio/virtio_ccw.c
>> @@ -773,10 +773,8 @@ static u64 virtio_ccw_get_features(struct virtio_device *vdev)
>>  static void ccw_transport_features(struct virtio_device *vdev)
>>  {
>>  	/*
>> -	 * There shouldn't be anything that precludes supporting packed.
>> -	 * TODO: Remove the limitation after having another look into this.
>> +	 * Currently nothing to do here.
>>  	 */
>> -	__virtio_clear_bit(vdev, VIRTIO_F_RING_PACKED);
>>  }
>>  
>>  static int virtio_ccw_finalize_features(struct virtio_device *vdev)
> 
> Not sure whether we should merge this into the previous patch instead.

In case you respin, I'd vote for squashing this into the previous patch
instead, especially since you've just added the comment in that patch.

Also, what about removing that function now completely? It's a static
function and only called once in this file, so IMHO it does not make
much sense to keep an empty function around. Or do you plan to add new
code here in the near future?

 Thomas

  reply	other threads:[~2019-05-05 15:13 UTC|newest]

Thread overview: 182+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-26 18:32 [PATCH 00/10] s390: virtio: support protected virtualization Halil Pasic
2019-04-26 18:32 ` Halil Pasic
2019-04-26 18:32 ` [PATCH 01/10] virtio/s390: use vring_create_virtqueue Halil Pasic
2019-04-26 18:32   ` Halil Pasic
2019-05-03  9:17   ` Cornelia Huck
2019-05-03 20:04     ` Michael S. Tsirkin
2019-05-03 20:04       ` Michael S. Tsirkin
2019-05-04 14:03       ` Halil Pasic
2019-05-04 14:03         ` Halil Pasic
2019-05-05 11:15         ` Cornelia Huck
2019-05-05 11:15           ` Cornelia Huck
2019-05-07 13:58           ` Christian Borntraeger
2019-05-07 13:58             ` Christian Borntraeger
2019-05-08 20:12             ` Halil Pasic
2019-05-08 20:12               ` Halil Pasic
2019-05-10 14:07             ` Cornelia Huck
2019-05-10 14:07               ` Cornelia Huck
2019-05-12 16:47               ` Michael S. Tsirkin
2019-05-12 16:47                 ` Michael S. Tsirkin
2019-05-13  9:52                 ` Cornelia Huck
2019-05-13  9:52                   ` Cornelia Huck
2019-05-13 12:27                   ` Michael Mueller
2019-05-13 12:27                     ` Michael Mueller
2019-05-13 12:29                     ` Cornelia Huck
2019-05-13 12:29                       ` Cornelia Huck
2019-04-26 18:32 ` [PATCH 02/10] virtio/s390: DMA support for virtio-ccw Halil Pasic
2019-04-26 18:32   ` Halil Pasic
2019-05-03  9:31   ` Cornelia Huck
2019-04-26 18:32 ` [PATCH 03/10] virtio/s390: enable packed ring Halil Pasic
2019-04-26 18:32   ` Halil Pasic
2019-05-03  9:44   ` Cornelia Huck
2019-05-05 15:13     ` Thomas Huth [this message]
2019-05-05 15:13       ` Thomas Huth
2019-04-26 18:32 ` [PATCH 04/10] s390/mm: force swiotlb for protected virtualization Halil Pasic
2019-04-26 18:32   ` Halil Pasic
2019-04-26 19:27   ` Christoph Hellwig
2019-04-26 19:27     ` Christoph Hellwig
2019-04-29 13:59     ` Halil Pasic
2019-04-29 13:59       ` Halil Pasic
2019-04-29 14:05       ` Christian Borntraeger
2019-04-29 14:05         ` Christian Borntraeger
2019-05-13 12:50         ` Michael Mueller
2019-05-13 12:50           ` Michael Mueller
2019-05-08 13:15   ` Claudio Imbrenda
2019-05-08 13:15     ` Claudio Imbrenda
2019-05-09 22:34     ` Halil Pasic
2019-05-09 22:34       ` Halil Pasic
2019-05-15 14:15       ` Michael Mueller
2019-05-15 14:15         ` Michael Mueller
     [not found]   ` <ad23f5e7-dc78-04af-c892-47bbc65134c6@linux.ibm.com>
2019-05-09 18:05     ` Jason J. Herne
2019-05-09 18:05       ` Jason J. Herne
2019-05-09 18:05       ` Jason J. Herne
2019-05-10  7:49       ` Claudio Imbrenda
2019-05-10  7:49         ` Claudio Imbrenda
2019-04-26 18:32 ` [PATCH 05/10] s390/cio: introduce DMA pools to cio Halil Pasic
2019-04-26 18:32   ` Halil Pasic
2019-05-08 13:18   ` Sebastian Ott
2019-05-08 13:18     ` Sebastian Ott
2019-05-08 21:22     ` Halil Pasic
2019-05-08 21:22       ` Halil Pasic
2019-05-09  8:40       ` Sebastian Ott
2019-05-09  8:40         ` Sebastian Ott
2019-05-09 10:11       ` Cornelia Huck
2019-05-09 10:11         ` Cornelia Huck
2019-05-09 22:11         ` Halil Pasic
2019-05-09 22:11           ` Halil Pasic
2019-05-10 14:10           ` Cornelia Huck
2019-05-10 14:10             ` Cornelia Huck
2019-05-12 18:22             ` Halil Pasic
2019-05-12 18:22               ` Halil Pasic
2019-05-13 13:29               ` Cornelia Huck
2019-05-13 13:29                 ` Cornelia Huck
2019-05-15 17:12                 ` Halil Pasic
2019-05-15 17:12                   ` Halil Pasic
2019-05-16  6:13                   ` Cornelia Huck
2019-05-16  6:13                     ` Cornelia Huck
2019-05-16 13:59               ` Sebastian Ott
2019-05-16 13:59                 ` Sebastian Ott
2019-05-20 12:13                 ` Halil Pasic
2019-05-20 12:13                   ` Halil Pasic
2019-05-21  8:46                   ` Michael Mueller
2019-05-21  8:46                     ` Michael Mueller
2019-05-22 12:07                   ` Sebastian Ott
2019-05-22 12:07                     ` Sebastian Ott
2019-05-22 22:12                     ` Halil Pasic
2019-05-22 22:12                       ` Halil Pasic
2019-05-23 15:17     ` Halil Pasic
2019-05-23 15:17       ` Halil Pasic
2019-04-26 18:32 ` [PATCH 06/10] s390/cio: add basic protected virtualization support Halil Pasic
2019-04-26 18:32   ` Halil Pasic
2019-05-08 13:46   ` Sebastian Ott
2019-05-08 13:46     ` Sebastian Ott
2019-05-08 13:54     ` Christoph Hellwig
2019-05-08 13:54       ` Christoph Hellwig
2019-05-08 21:08     ` Halil Pasic
2019-05-08 21:08       ` Halil Pasic
2019-05-09  8:52       ` Sebastian Ott
2019-05-09  8:52         ` Sebastian Ott
2019-05-08 14:23   ` Pierre Morel
2019-05-08 14:23     ` Pierre Morel
2019-05-13  9:41   ` Cornelia Huck
2019-05-13  9:41     ` Cornelia Huck
2019-05-14 14:47     ` Jason J. Herne
2019-05-14 14:47       ` Jason J. Herne
2019-05-15 21:08       ` Halil Pasic
2019-05-15 21:08         ` Halil Pasic
2019-05-16  6:32         ` Cornelia Huck
2019-05-16  6:32           ` Cornelia Huck
2019-05-16 13:42           ` Halil Pasic
2019-05-16 13:42             ` Halil Pasic
2019-05-16 13:54             ` Cornelia Huck
2019-05-16 13:54               ` Cornelia Huck
2019-05-15 20:51     ` Halil Pasic
2019-05-15 20:51       ` Halil Pasic
2019-05-16  6:29       ` Cornelia Huck
2019-05-16  6:29         ` Cornelia Huck
2019-05-18 18:11         ` Halil Pasic
2019-05-18 18:11           ` Halil Pasic
2019-05-20 10:21           ` Cornelia Huck
2019-05-20 10:21             ` Cornelia Huck
2019-05-20 12:34             ` Halil Pasic
2019-05-20 12:34               ` Halil Pasic
2019-05-20 13:43               ` Cornelia Huck
2019-05-20 13:43                 ` Cornelia Huck
2019-04-26 18:32 ` [PATCH 07/10] s390/airq: use DMA memory for adapter interrupts Halil Pasic
2019-04-26 18:32   ` Halil Pasic
2019-05-08 13:58   ` Sebastian Ott
2019-05-08 13:58     ` Sebastian Ott
2019-05-09 11:37   ` Cornelia Huck
2019-05-09 11:37     ` Cornelia Huck
2019-05-13 12:59   ` Cornelia Huck
2019-05-13 12:59     ` Cornelia Huck
2019-04-26 18:32 ` [PATCH 08/10] virtio/s390: add indirection to indicators access Halil Pasic
2019-04-26 18:32   ` Halil Pasic
2019-05-08 14:31   ` Pierre Morel
2019-05-08 14:31     ` Pierre Morel
2019-05-09 12:01     ` Pierre Morel
2019-05-09 12:01       ` Pierre Morel
2019-05-09 18:26       ` Halil Pasic
2019-05-09 18:26         ` Halil Pasic
2019-05-10  7:43         ` Pierre Morel
2019-05-10  7:43           ` Pierre Morel
2019-05-10 11:54           ` Halil Pasic
2019-05-10 11:54             ` Halil Pasic
2019-05-10 15:36             ` Pierre Morel
2019-05-10 15:36               ` Pierre Morel
2019-05-13 10:15               ` Cornelia Huck
2019-05-13 10:15                 ` Cornelia Huck
2019-05-16 15:24                 ` Pierre Morel
2019-05-16 15:24                   ` Pierre Morel
2019-04-26 18:32 ` [PATCH 09/10] virtio/s390: use DMA memory for ccw I/O and classic notifiers Halil Pasic
2019-04-26 18:32   ` Halil Pasic
2019-05-08 14:46   ` Pierre Morel
2019-05-08 14:46     ` Pierre Morel
2019-05-09 13:30     ` Pierre Morel
2019-05-09 13:30       ` Pierre Morel
2019-05-09 18:30       ` Halil Pasic
2019-05-09 18:30         ` Halil Pasic
2019-05-13 13:54   ` Cornelia Huck
2019-05-13 13:54     ` Cornelia Huck
2019-04-26 18:32 ` [PATCH 10/10] virtio/s390: make airq summary indicators DMA Halil Pasic
2019-04-26 18:32   ` Halil Pasic
2019-05-08 15:11   ` Pierre Morel
2019-05-08 15:11     ` Pierre Morel
2019-05-15 13:33     ` Michael Mueller
2019-05-15 13:33       ` Michael Mueller
2019-05-15 17:23       ` Halil Pasic
2019-05-15 17:23         ` Halil Pasic
2019-05-13 12:20   ` Cornelia Huck
2019-05-13 12:20     ` Cornelia Huck
2019-05-15 13:43     ` Michael Mueller
2019-05-15 13:43       ` Michael Mueller
2019-05-15 13:50       ` Cornelia Huck
2019-05-15 13:50         ` Cornelia Huck
2019-05-15 17:18       ` Halil Pasic
2019-05-15 17:18         ` Halil Pasic
2019-05-03  9:55 ` [PATCH 00/10] s390: virtio: support protected virtualization Cornelia Huck
2019-05-03 10:03   ` Juergen Gross
2019-05-03 13:33   ` Cornelia Huck
2019-05-03 13:33     ` Cornelia Huck
2019-05-04 13:58   ` Halil Pasic
2019-05-04 13:58     ` Halil Pasic

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