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From: "Xia, Chenbo" <chenbo.xia@intel.com>
To: Matan Azrad <matan@mellanox.com>,
	Maxime Coquelin <maxime.coquelin@redhat.com>
Cc: "dev@dpdk.org" <dev@dpdk.org>, "Wang, Xiao W" <xiao.w.wang@intel.com>
Subject: Re: [dpdk-dev] [PATCH v2 3/5] vhost: handle memory hotplug with vDPA	devices
Date: Sun, 28 Jun 2020 03:18:21 +0000
Message-ID: <MN2PR11MB4063912FF7CBE9539BB2D61E9C910@MN2PR11MB4063.namprd11.prod.outlook.com> (raw)
In-Reply-To: <1593092298-52257-4-git-send-email-matan@mellanox.com>


> -----Original Message-----
> From: dev <dev-bounces@dpdk.org> On Behalf Of Matan Azrad
> Sent: Thursday, June 25, 2020 9:38 PM
> To: Maxime Coquelin <maxime.coquelin@redhat.com>
> Cc: dev@dpdk.org; Wang, Xiao W <xiao.w.wang@intel.com>
> Subject: [dpdk-dev] [PATCH v2 3/5] vhost: handle memory hotplug with vDPA
> devices
> 
> Some vDPA drivers' basic configurations should be updated when the guest
> memory is hotplugged.
> 
> Close vDPA device before hotplug operation and recreate it after the hotplug
> operation is done.
> 
> Signed-off-by: Matan Azrad <matan@mellanox.com>
> ---
>  lib/librte_vhost/vhost_user.c | 9 +++++++++
>  1 file changed, 9 insertions(+)
> 
> diff --git a/lib/librte_vhost/vhost_user.c b/lib/librte_vhost/vhost_user.c index
> b90fc78..f690fdb 100644
> --- a/lib/librte_vhost/vhost_user.c
> +++ b/lib/librte_vhost/vhost_user.c
> @@ -1073,6 +1073,15 @@
>  	}
> 
>  	if (dev->mem) {
> +		if (dev->flags & VIRTIO_DEV_VDPA_CONFIGURED) {
> +			int did = dev->vdpa_dev_id;
> +			struct rte_vdpa_device *vdpa_dev =
> +						rte_vdpa_get_device(did);
> +
> +			if (vdpa_dev && vdpa_dev->ops->dev_close)
> +				vdpa_dev->ops->dev_close(dev->vid);
> +			dev->flags &= ~VIRTIO_DEV_VDPA_CONFIGURED;
> +		}

For now, this solution is general for all vendors. Later we may improve this by calling vendor's
callback as they may behave differently. For now this looks good to me :) (sorry that the reply
is late for memory hotplug discussion because of holiday). Thanks!

>  		free_mem_region(dev);
>  		rte_free(dev->mem);
>  		dev->mem = NULL;
> --
> 1.8.3.1

Reviewed-by: Chenbo Xia <chenbo.xia@intel.com>

  parent reply	other threads:[~2020-06-28  3:18 UTC|newest]

Thread overview: 59+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-18 16:28 [dpdk-dev] [PATCH v1 0/4] vhost: improve ready state Matan Azrad
2020-06-18 16:28 ` [dpdk-dev] [PATCH v1 1/4] vhost: support host notifier queue configuration Matan Azrad
2020-06-19  6:44   ` Maxime Coquelin
2020-06-19 13:28     ` Matan Azrad
2020-06-19 14:01       ` Maxime Coquelin
2020-06-21  6:26         ` Matan Azrad
2020-06-22  8:06           ` Maxime Coquelin
2020-06-18 16:28 ` [dpdk-dev] [PATCH v1 2/4] vhost: skip access lock when vDPA is configured Matan Azrad
2020-06-19  6:49   ` Maxime Coquelin
2020-06-18 16:28 ` [dpdk-dev] [PATCH v1 3/4] vhost: improve device ready definition Matan Azrad
2020-06-19  7:41   ` Maxime Coquelin
2020-06-19 12:04     ` Maxime Coquelin
2020-06-19 13:11     ` Matan Azrad
2020-06-19 13:54       ` Maxime Coquelin
2020-06-21  6:20         ` Matan Azrad
2020-06-22  8:04           ` Maxime Coquelin
2020-06-22  8:41             ` Matan Azrad
2020-06-22  8:56               ` Maxime Coquelin
2020-06-22 10:06                 ` Matan Azrad
2020-06-22 12:32                   ` Maxime Coquelin
2020-06-22 13:43                     ` Matan Azrad
2020-06-22 14:55                       ` Maxime Coquelin
2020-06-22 15:51                         ` Matan Azrad
2020-06-22 16:47                           ` Maxime Coquelin
2020-06-23  9:02                             ` Matan Azrad
2020-06-23  9:19                               ` Maxime Coquelin
2020-06-23 11:53                                 ` Matan Azrad
2020-06-23 13:55                                   ` Maxime Coquelin
2020-06-23 14:33                                     ` Maxime Coquelin
2020-06-23 14:52                                     ` Matan Azrad
2020-06-23 15:18                                       ` Maxime Coquelin
2020-06-24  5:54                                         ` Matan Azrad
2020-06-24  7:22                                           ` Maxime Coquelin
2020-06-24  8:38                                             ` Matan Azrad
2020-06-24  9:12                                               ` Maxime Coquelin
2020-06-18 16:28 ` [dpdk-dev] [PATCH v1 4/4] vdpa/mlx5: support queue update Matan Azrad
2020-06-25 13:38 ` [dpdk-dev] [PATCH v2 0/5] vhost: improve ready state Matan Azrad
2020-06-25 13:38   ` [dpdk-dev] [PATCH v2 1/5] vhost: skip access lock when vDPA is configured Matan Azrad
2020-06-28  3:06     ` Xia, Chenbo
2020-06-25 13:38   ` [dpdk-dev] [PATCH v2 2/5] vhost: improve device readiness notifications Matan Azrad
2020-06-26 12:10     ` Maxime Coquelin
2020-06-28  3:08     ` Xia, Chenbo
2020-06-25 13:38   ` [dpdk-dev] [PATCH v2 3/5] vhost: handle memory hotplug with vDPA devices Matan Azrad
2020-06-26 12:15     ` Maxime Coquelin
2020-06-28  3:18     ` Xia, Chenbo [this message]
2020-06-25 13:38   ` [dpdk-dev] [PATCH v2 4/5] vhost: notify virtq file descriptor update Matan Azrad
2020-06-26 12:19     ` Maxime Coquelin
2020-06-28  3:19     ` Xia, Chenbo
2020-06-25 13:38   ` [dpdk-dev] [PATCH v2 5/5] vdpa/mlx5: support queue update Matan Azrad
2020-06-26 12:29     ` Maxime Coquelin
2020-06-29 14:08   ` [dpdk-dev] [PATCH v3 0/6] vhost: improve ready state Matan Azrad
2020-06-29 14:08     ` [dpdk-dev] [PATCH v3 1/6] vhost: support host notifier queue configuration Matan Azrad
2020-06-29 14:08     ` [dpdk-dev] [PATCH v3 2/6] vhost: skip access lock when vDPA is configured Matan Azrad
2020-06-29 14:08     ` [dpdk-dev] [PATCH v3 3/6] vhost: improve device readiness notifications Matan Azrad
2020-06-29 14:08     ` [dpdk-dev] [PATCH v3 4/6] vhost: handle memory hotplug with vDPA devices Matan Azrad
2020-06-29 14:08     ` [dpdk-dev] [PATCH v3 5/6] vhost: notify virtq file descriptor update Matan Azrad
2020-06-29 14:08     ` [dpdk-dev] [PATCH v3 6/6] vdpa/mlx5: support queue update Matan Azrad
2020-06-29 17:24     ` [dpdk-dev] [PATCH v3 0/6] vhost: improve ready state Maxime Coquelin
2020-07-17  1:41       ` Wang, Yinan

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