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From: "Michael S. Tsirkin" <mst@redhat.com>
To: Parav Pandit <parav@nvidia.com>
Cc: Heng Qi <hengqi@linux.alibaba.com>,
	"virtio-comment@lists.oasis-open.org"
	<virtio-comment@lists.oasis-open.org>,
	"virtio-dev@lists.oasis-open.org"
	<virtio-dev@lists.oasis-open.org>,
	Jason Wang <jasowang@redhat.com>,
	Yuri Benditovich <yuri.benditovich@daynix.com>,
	Xuan Zhuo <xuanzhuo@linux.alibaba.com>,
	Cornelia Huck <cohuck@redhat.com>
Subject: [virtio-dev] Re: [virtio-comment] Re: [PATCH v18] virtio-net: support inner header hash
Date: Thu, 22 Jun 2023 13:11:03 -0400	[thread overview]
Message-ID: <20230622130359-mutt-send-email-mst@kernel.org> (raw)
In-Reply-To: <PH0PR12MB54815D6D07A49CE775620088DC22A@PH0PR12MB5481.namprd12.prod.outlook.com>

On Thu, Jun 22, 2023 at 12:32:33PM +0000, Parav Pandit wrote:
> Provisioning driver usually do not attach to the member device directly.
> This requires device reset, followed by reaching _DRIVER stage, querying features etc and config area.
> And unbinding it and second reset by member driver. Ugh.
> Provisioning driver also needs to get the state or capabilities even when member driver is already attached.
> So config space is not much a gain either.

Actually it's RO so you *can* read it without any issues:
- block guest access to status
- check DRIVER.
If set:
	- read features, config
If not set:
	- read features, config
	- reset

I am not saying it is elegant but then all of vdpa pile of
hacks is not elegant.

And I am all for building something better but we didn't
build it yet.

-- 
MST


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  parent reply	other threads:[~2023-06-22 17:11 UTC|newest]

Thread overview: 53+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2023-06-21 13:50 [virtio-dev] [PATCH v18] virtio-net: support inner header hash Heng Qi
2023-06-21 15:38 ` [virtio-dev] " Michael S. Tsirkin
2023-06-21 16:46   ` [virtio-dev] Re: [virtio-comment] " Heng Qi
2023-06-21 17:52     ` [virtio-dev] " Parav Pandit
2023-06-21 19:25       ` [virtio-dev] " Michael S. Tsirkin
2023-06-21 19:28         ` [virtio-dev] " Parav Pandit
2023-06-21 19:35           ` [virtio-dev] " Michael S. Tsirkin
2023-06-21 19:39             ` [virtio-dev] " Parav Pandit
2023-06-21 19:45               ` [virtio-dev] " Michael S. Tsirkin
2023-06-22  0:46             ` Heng Qi
2023-06-21 19:32     ` Michael S. Tsirkin
2023-06-21 19:37       ` [virtio-dev] " Parav Pandit
2023-06-21 20:16         ` [virtio-dev] " Michael S. Tsirkin
2023-06-21 20:24           ` [virtio-dev] " Parav Pandit
2023-06-21 20:37             ` [virtio-dev] " Michael S. Tsirkin
2023-06-21 20:52               ` [virtio-dev] " Parav Pandit
2023-06-22  0:59                 ` Heng Qi
2023-06-22  1:04                   ` Parav Pandit
2023-06-22  1:17                     ` Heng Qi
2023-06-22  6:23                 ` [virtio-dev] " Michael S. Tsirkin
2023-06-22 12:32                   ` [virtio-dev] " Parav Pandit
2023-06-22 13:42                     ` [virtio-dev] " Heng Qi
2023-06-22 14:27                       ` [virtio-dev] " Parav Pandit
2023-06-22 16:46                         ` [virtio-dev] " Michael S. Tsirkin
2023-06-22 16:54                           ` [virtio-dev] " Parav Pandit
2023-06-22 17:03                             ` [virtio-dev] " Michael S. Tsirkin
2023-06-22 17:11                               ` [virtio-dev] " Parav Pandit
2023-06-22 17:28                                 ` [virtio-dev] " Michael S. Tsirkin
2023-06-22 17:58                                   ` [virtio-dev] " Parav Pandit
2023-06-28 10:41                                     ` [virtio-dev] " Michael S. Tsirkin
2023-06-28 16:46                                       ` [virtio-dev] " Parav Pandit
2023-06-28 17:08                                         ` [virtio-dev] " Michael S. Tsirkin
2023-06-22 16:28                     ` Michael S. Tsirkin
2023-06-22 16:42                       ` [virtio-dev] " Parav Pandit
2023-06-22 16:54                         ` [virtio-dev] " Michael S. Tsirkin
2023-06-22 17:04                           ` Parav Pandit
2023-06-22 17:14                             ` Michael S. Tsirkin
2023-06-22 17:20                               ` Parav Pandit
2023-06-22 17:43                                 ` Michael S. Tsirkin
2023-06-22 18:12                                   ` Parav Pandit
2023-06-22 18:36                                     ` Michael S. Tsirkin
2023-06-22 17:11                     ` Michael S. Tsirkin [this message]
2023-06-22 17:15                       ` [virtio-dev] " Parav Pandit
2023-06-22 17:37                         ` [virtio-dev] " Michael S. Tsirkin
2023-06-22 17:51                           ` Parav Pandit
2023-06-22 18:11                             ` Michael S. Tsirkin
2023-06-22 18:17                               ` Parav Pandit
2023-06-22 18:40                                 ` Michael S. Tsirkin
2023-06-22 18:50                                   ` [virtio-dev] RE: [virtio-comment] " Parav Pandit
2023-06-22 19:02                                     ` [virtio-dev] " Michael S. Tsirkin
2023-06-22 20:27                                       ` [virtio-dev] " Parav Pandit
2023-06-28 10:47                                         ` [virtio-dev] " Michael S. Tsirkin
2023-06-22  0:41       ` Heng Qi

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