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From: Jason Wang <jasowang@redhat.com>
To: Stefano Garzarella <sgarzare@redhat.com>,
	virtualization@lists.linux-foundation.org
Cc: Stefan Hajnoczi <stefanha@redhat.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	Oren Duer <oren@nvidia.com>, Laurent Vivier <lvivier@redhat.com>,
	linux-kernel@vger.kernel.org, Max Gurtovoy <mgurtovoy@nvidia.com>,
	Shahaf Shuler <shahafs@nvidia.com>, Eli Cohen <elic@nvidia.com>
Subject: Re: [PATCH v3 04/19] vhost/iotlb: add VHOST_IOTLB_UNLIMITED macro
Date: Mon, 7 Dec 2020 11:55:30 +0800	[thread overview]
Message-ID: <52ab5f00-c59b-9cfa-3837-10c1391fea33@redhat.com> (raw)
In-Reply-To: <20201203170511.216407-5-sgarzare@redhat.com>


On 2020/12/4 上午1:04, Stefano Garzarella wrote:
> It's possible to allocate an unlimited IOTLB calling
> vhost_iotlb_alloc() with 'limit' = 0.
>
> Add a new macro (VHOST_IOTLB_UNLIMITED) for this case and document
> it in the vhost_iotlb_alloc() documentation block.
>
> Suggested-by: Jason Wang <jasowang@redhat.com>
> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>


Acked-by: Jason Wang <jasowang@redhat.com>


> ---
>   include/linux/vhost_iotlb.h | 2 ++
>   drivers/vhost/iotlb.c       | 3 ++-
>   2 files changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/include/linux/vhost_iotlb.h b/include/linux/vhost_iotlb.h
> index 6b09b786a762..47019f97f795 100644
> --- a/include/linux/vhost_iotlb.h
> +++ b/include/linux/vhost_iotlb.h
> @@ -4,6 +4,8 @@
>   
>   #include <linux/interval_tree_generic.h>
>   
> +#define VHOST_IOTLB_UNLIMITED 0
> +
>   struct vhost_iotlb_map {
>   	struct rb_node rb;
>   	struct list_head link;
> diff --git a/drivers/vhost/iotlb.c b/drivers/vhost/iotlb.c
> index 0fd3f87e913c..80fdde78ee5a 100644
> --- a/drivers/vhost/iotlb.c
> +++ b/drivers/vhost/iotlb.c
> @@ -100,7 +100,8 @@ EXPORT_SYMBOL_GPL(vhost_iotlb_del_range);
>   
>   /**
>    * vhost_iotlb_alloc - add a new vhost IOTLB
> - * @limit: maximum number of IOTLB entries
> + * @limit: maximum number of IOTLB entries (use VHOST_IOTLB_UNLIMITED for an
> + *         unlimited IOTLB)
>    * @flags: VHOST_IOTLB_FLAG_XXX
>    *
>    * Returns an error is memory allocation fails


WARNING: multiple messages have this Message-ID (diff)
From: Jason Wang <jasowang@redhat.com>
To: Stefano Garzarella <sgarzare@redhat.com>,
	virtualization@lists.linux-foundation.org
Cc: Laurent Vivier <lvivier@redhat.com>,
	Max Gurtovoy <mgurtovoy@nvidia.com>,
	"Michael S. Tsirkin" <mst@redhat.com>,
	linux-kernel@vger.kernel.org, Shahaf Shuler <shahafs@nvidia.com>,
	Stefan Hajnoczi <stefanha@redhat.com>,
	Eli Cohen <elic@nvidia.com>, Oren Duer <oren@nvidia.com>
Subject: Re: [PATCH v3 04/19] vhost/iotlb: add VHOST_IOTLB_UNLIMITED macro
Date: Mon, 7 Dec 2020 11:55:30 +0800	[thread overview]
Message-ID: <52ab5f00-c59b-9cfa-3837-10c1391fea33@redhat.com> (raw)
In-Reply-To: <20201203170511.216407-5-sgarzare@redhat.com>


On 2020/12/4 上午1:04, Stefano Garzarella wrote:
> It's possible to allocate an unlimited IOTLB calling
> vhost_iotlb_alloc() with 'limit' = 0.
>
> Add a new macro (VHOST_IOTLB_UNLIMITED) for this case and document
> it in the vhost_iotlb_alloc() documentation block.
>
> Suggested-by: Jason Wang <jasowang@redhat.com>
> Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>


Acked-by: Jason Wang <jasowang@redhat.com>


> ---
>   include/linux/vhost_iotlb.h | 2 ++
>   drivers/vhost/iotlb.c       | 3 ++-
>   2 files changed, 4 insertions(+), 1 deletion(-)
>
> diff --git a/include/linux/vhost_iotlb.h b/include/linux/vhost_iotlb.h
> index 6b09b786a762..47019f97f795 100644
> --- a/include/linux/vhost_iotlb.h
> +++ b/include/linux/vhost_iotlb.h
> @@ -4,6 +4,8 @@
>   
>   #include <linux/interval_tree_generic.h>
>   
> +#define VHOST_IOTLB_UNLIMITED 0
> +
>   struct vhost_iotlb_map {
>   	struct rb_node rb;
>   	struct list_head link;
> diff --git a/drivers/vhost/iotlb.c b/drivers/vhost/iotlb.c
> index 0fd3f87e913c..80fdde78ee5a 100644
> --- a/drivers/vhost/iotlb.c
> +++ b/drivers/vhost/iotlb.c
> @@ -100,7 +100,8 @@ EXPORT_SYMBOL_GPL(vhost_iotlb_del_range);
>   
>   /**
>    * vhost_iotlb_alloc - add a new vhost IOTLB
> - * @limit: maximum number of IOTLB entries
> + * @limit: maximum number of IOTLB entries (use VHOST_IOTLB_UNLIMITED for an
> + *         unlimited IOTLB)
>    * @flags: VHOST_IOTLB_FLAG_XXX
>    *
>    * Returns an error is memory allocation fails

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  reply	other threads:[~2020-12-07  3:57 UTC|newest]

Thread overview: 70+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-12-03 17:04 [PATCH v3 00/19] vdpa: generalize vdpa simulator Stefano Garzarella
2020-12-03 17:04 ` Stefano Garzarella
2020-12-03 17:04 ` [PATCH v3 01/19] vdpa: remove unnecessary 'default n' in Kconfig entries Stefano Garzarella
2020-12-03 17:04   ` Stefano Garzarella
2020-12-03 17:04 ` [PATCH v3 02/19] vdpa_sim: remove unnecessary headers inclusion Stefano Garzarella
2020-12-03 17:04   ` Stefano Garzarella
2020-12-03 17:37   ` Randy Dunlap
2020-12-03 17:37     ` Randy Dunlap
2020-12-04  7:57     ` Stefano Garzarella
2020-12-04  7:57       ` Stefano Garzarella
2020-12-03 17:04 ` [PATCH v3 03/19] vdpa_sim: remove hard-coded virtq count Stefano Garzarella
2020-12-03 17:04   ` Stefano Garzarella
2020-12-03 17:04 ` [PATCH v3 04/19] vhost/iotlb: add VHOST_IOTLB_UNLIMITED macro Stefano Garzarella
2020-12-03 17:04   ` Stefano Garzarella
2020-12-07  3:55   ` Jason Wang [this message]
2020-12-07  3:55     ` Jason Wang
2020-12-03 17:04 ` [PATCH v3 05/19] vdpa_sim: remove the limit of IOTLB entries Stefano Garzarella
2020-12-03 17:04   ` Stefano Garzarella
2020-12-07  4:00   ` Jason Wang
2020-12-07  4:00     ` Jason Wang
2020-12-09 10:58     ` Stefano Garzarella
2020-12-09 10:58       ` Stefano Garzarella
2020-12-10  4:03       ` Jason Wang
2020-12-10  4:03         ` Jason Wang
2020-12-03 17:04 ` [PATCH v3 06/19] vdpa_sim: rename vdpasim_config_ops variables Stefano Garzarella
2020-12-03 17:04   ` Stefano Garzarella
2020-12-03 17:04 ` [PATCH v3 07/19] vdpa_sim: add struct vdpasim_dev_attr for device attributes Stefano Garzarella
2020-12-03 17:04   ` Stefano Garzarella
2020-12-03 17:05 ` [PATCH v3 08/19] vdpa_sim: add device id field in vdpasim_dev_attr Stefano Garzarella
2020-12-03 17:05   ` Stefano Garzarella
2020-12-03 17:05 ` [PATCH v3 09/19] vdpa_sim: add supported_features " Stefano Garzarella
2020-12-03 17:05   ` Stefano Garzarella
2020-12-03 17:05 ` [PATCH v3 10/19] vdpa_sim: add work_fn " Stefano Garzarella
2020-12-03 17:05   ` Stefano Garzarella
2020-12-03 17:05 ` [PATCH v3 11/19] vdpa_sim: store parsed MAC address in a buffer Stefano Garzarella
2020-12-03 17:05   ` Stefano Garzarella
2020-12-03 17:05 ` [PATCH v3 12/19] vdpa_sim: make 'config' generic and usable for any device type Stefano Garzarella
2020-12-03 17:05   ` Stefano Garzarella
2020-12-07  5:22   ` Jason Wang
2020-12-07  5:22     ` Jason Wang
2020-12-03 17:05 ` [PATCH v3 13/19] vdpa_sim: add get_config callback in vdpasim_dev_attr Stefano Garzarella
2020-12-03 17:05   ` Stefano Garzarella
2020-12-07  5:29   ` Jason Wang
2020-12-07  5:29     ` Jason Wang
2020-12-09 11:07     ` Stefano Garzarella
2020-12-09 11:07       ` Stefano Garzarella
2020-12-15 11:43       ` Stefano Garzarella
2020-12-15 11:43         ` Stefano Garzarella
2020-12-03 17:05 ` [PATCH v3 14/19] vdpa_sim: add set_config " Stefano Garzarella
2020-12-03 17:05   ` Stefano Garzarella
2020-12-07  5:30   ` Jason Wang
2020-12-07  5:30     ` Jason Wang
2020-12-03 17:05 ` [PATCH v3 15/19] vdpa_sim: set vringh notify callback Stefano Garzarella
2020-12-03 17:05   ` Stefano Garzarella
2020-12-07  5:30   ` Jason Wang
2020-12-07  5:30     ` Jason Wang
2020-12-03 17:05 ` [PATCH v3 16/19] vdpa_sim: use kvmalloc to allocate vdpasim->buffer Stefano Garzarella
2020-12-03 17:05   ` Stefano Garzarella
2020-12-03 17:05 ` [PATCH v3 17/19] vdpa_sim: make vdpasim->buffer size configurable Stefano Garzarella
2020-12-03 17:05   ` Stefano Garzarella
2020-12-03 17:05 ` [PATCH v3 18/19] vdpa_sim: split vdpasim_virtqueue's iov field in out_iov and in_iov Stefano Garzarella
2020-12-03 17:05   ` Stefano Garzarella
2020-12-03 17:05 ` [PATCH v3 19/19] vdpa: split vdpasim to core and net modules Stefano Garzarella
2020-12-03 17:05   ` Stefano Garzarella
2020-12-03 17:25   ` Randy Dunlap
2020-12-03 17:25     ` Randy Dunlap
2020-12-04  7:48     ` Stefano Garzarella
2020-12-04  7:48       ` Stefano Garzarella
2020-12-07  5:33   ` Jason Wang
2020-12-07  5:33     ` Jason Wang

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