From: Jason Wang <jasowang@redhat.com>
To: Xie Yongji <xieyongji@bytedance.com>,
mst@redhat.com, stefanha@redhat.com, sgarzare@redhat.com,
parav@nvidia.com, bob.liu@oracle.com, hch@infradead.org,
rdunlap@infradead.org, willy@infradead.org,
viro@zeniv.linux.org.uk, axboe@kernel.dk, bcrl@kvack.org,
corbet@lwn.net
Cc: virtualization@lists.linux-foundation.org,
netdev@vger.kernel.org, kvm@vger.kernel.org, linux-aio@kvack.org,
linux-fsdevel@vger.kernel.org
Subject: Re: [RFC v4 03/11] vhost-iotlb: Add an opaque pointer for vhost IOTLB
Date: Tue, 2 Mar 2021 14:49:09 +0800 [thread overview]
Message-ID: <41c12b5a-d46c-2b80-d553-82efc3f94147@redhat.com> (raw)
In-Reply-To: <20210223115048.435-4-xieyongji@bytedance.com>
On 2021/2/23 7:50 下午, Xie Yongji wrote:
> Add an opaque pointer for vhost IOTLB. And introduce
> vhost_iotlb_add_range_ctx() to accept it.
>
> Suggested-by: Jason Wang <jasowang@redhat.com>
> Signed-off-by: Xie Yongji <xieyongji@bytedance.com>
Acked-by: Jason Wang <jasowang@redhat.com>
> ---
> drivers/vhost/iotlb.c | 20 ++++++++++++++++----
> include/linux/vhost_iotlb.h | 3 +++
> 2 files changed, 19 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/vhost/iotlb.c b/drivers/vhost/iotlb.c
> index 0fd3f87e913c..5c99e1112cbb 100644
> --- a/drivers/vhost/iotlb.c
> +++ b/drivers/vhost/iotlb.c
> @@ -36,19 +36,21 @@ void vhost_iotlb_map_free(struct vhost_iotlb *iotlb,
> EXPORT_SYMBOL_GPL(vhost_iotlb_map_free);
>
> /**
> - * vhost_iotlb_add_range - add a new range to vhost IOTLB
> + * vhost_iotlb_add_range_ctx - add a new range to vhost IOTLB
> * @iotlb: the IOTLB
> * @start: start of the IOVA range
> * @last: last of IOVA range
> * @addr: the address that is mapped to @start
> * @perm: access permission of this range
> + * @opaque: the opaque pointer for the new mapping
> *
> * Returns an error last is smaller than start or memory allocation
> * fails
> */
> -int vhost_iotlb_add_range(struct vhost_iotlb *iotlb,
> - u64 start, u64 last,
> - u64 addr, unsigned int perm)
> +int vhost_iotlb_add_range_ctx(struct vhost_iotlb *iotlb,
> + u64 start, u64 last,
> + u64 addr, unsigned int perm,
> + void *opaque)
> {
> struct vhost_iotlb_map *map;
>
> @@ -71,6 +73,7 @@ int vhost_iotlb_add_range(struct vhost_iotlb *iotlb,
> map->last = last;
> map->addr = addr;
> map->perm = perm;
> + map->opaque = opaque;
>
> iotlb->nmaps++;
> vhost_iotlb_itree_insert(map, &iotlb->root);
> @@ -80,6 +83,15 @@ int vhost_iotlb_add_range(struct vhost_iotlb *iotlb,
>
> return 0;
> }
> +EXPORT_SYMBOL_GPL(vhost_iotlb_add_range_ctx);
> +
> +int vhost_iotlb_add_range(struct vhost_iotlb *iotlb,
> + u64 start, u64 last,
> + u64 addr, unsigned int perm)
> +{
> + return vhost_iotlb_add_range_ctx(iotlb, start, last,
> + addr, perm, NULL);
> +}
> EXPORT_SYMBOL_GPL(vhost_iotlb_add_range);
>
> /**
> diff --git a/include/linux/vhost_iotlb.h b/include/linux/vhost_iotlb.h
> index 6b09b786a762..2d0e2f52f938 100644
> --- a/include/linux/vhost_iotlb.h
> +++ b/include/linux/vhost_iotlb.h
> @@ -17,6 +17,7 @@ struct vhost_iotlb_map {
> u32 perm;
> u32 flags_padding;
> u64 __subtree_last;
> + void *opaque;
> };
>
> #define VHOST_IOTLB_FLAG_RETIRE 0x1
> @@ -29,6 +30,8 @@ struct vhost_iotlb {
> unsigned int flags;
> };
>
> +int vhost_iotlb_add_range_ctx(struct vhost_iotlb *iotlb, u64 start, u64 last,
> + u64 addr, unsigned int perm, void *opaque);
> int vhost_iotlb_add_range(struct vhost_iotlb *iotlb, u64 start, u64 last,
> u64 addr, unsigned int perm);
> void vhost_iotlb_del_range(struct vhost_iotlb *iotlb, u64 start, u64 last);
next prev parent reply other threads:[~2021-03-02 9:01 UTC|newest]
Thread overview: 65+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-23 11:50 [RFC v4 00/11] Introduce VDUSE - vDPA Device in Userspace Xie Yongji
2021-02-23 11:50 ` [RFC v4 01/11] eventfd: Increase the recursion depth of eventfd_signal() Xie Yongji
2021-03-02 6:44 ` Jason Wang
2021-03-02 10:32 ` Yongji Xie
2021-02-23 11:50 ` [RFC v4 02/11] vhost-vdpa: protect concurrent access to vhost device iotlb Xie Yongji
2021-03-02 6:47 ` Jason Wang
2021-03-02 10:20 ` Yongji Xie
2021-02-23 11:50 ` [RFC v4 03/11] vhost-iotlb: Add an opaque pointer for vhost IOTLB Xie Yongji
2021-03-02 6:49 ` Jason Wang [this message]
2021-02-23 11:50 ` [RFC v4 04/11] vdpa: Add an opaque pointer for vdpa_config_ops.dma_map() Xie Yongji
2021-03-02 6:50 ` Jason Wang
2021-02-23 11:50 ` [RFC v4 05/11] vdpa: Support transferring virtual addressing during DMA mapping Xie Yongji
2021-03-03 10:52 ` Mika Penttilä
2021-03-03 12:45 ` Yongji Xie
2021-03-03 13:38 ` Mika Penttilä
2021-03-04 3:07 ` Jason Wang
2021-03-04 5:40 ` Yongji Xie
2021-02-23 11:50 ` [RFC v4 06/11] vduse: Implement an MMU-based IOMMU driver Xie Yongji
2021-03-04 4:20 ` Jason Wang
2021-03-04 5:12 ` Yongji Xie
2021-03-05 3:35 ` Jason Wang
2021-03-05 6:15 ` Yongji Xie
[not found] ` <4db35f8c-ee3a-90fb-8d14-5d6014b4f6fa@redhat.com>
2021-03-05 7:13 ` Yongji Xie
2021-03-05 7:27 ` Jason Wang
2021-03-05 7:59 ` Yongji Xie
2021-03-08 3:17 ` Jason Wang
2021-03-08 3:45 ` Yongji Xie
2021-03-08 3:52 ` Jason Wang
2021-03-08 5:05 ` Yongji Xie
2021-03-08 7:04 ` Jason Wang
2021-03-08 7:08 ` Yongji Xie
2021-02-23 11:50 ` [RFC v4 07/11] vduse: Introduce VDUSE - vDPA Device in Userspace Xie Yongji
2021-03-04 6:27 ` Jason Wang
2021-03-04 8:05 ` Yongji Xie
2021-03-05 3:20 ` Jason Wang
2021-03-05 3:49 ` Yongji Xie
2021-03-10 12:58 ` Jason Wang
2021-03-11 2:28 ` Yongji Xie
2021-02-23 11:50 ` [RFC v4 08/11] vduse: Add config interrupt support Xie Yongji
2021-02-23 11:50 ` [RFC v4 09/11] Documentation: Add documentation for VDUSE Xie Yongji
2021-03-04 6:39 ` Jason Wang
2021-03-04 10:35 ` Yongji Xie
2021-02-23 11:50 ` [RFC v4 10/11] vduse: Introduce a workqueue for irq injection Xie Yongji
2021-03-04 6:59 ` Jason Wang
2021-03-04 8:58 ` Yongji Xie
2021-03-05 3:04 ` Jason Wang
2021-03-05 3:30 ` Yongji Xie
2021-03-05 3:42 ` Jason Wang
2021-03-05 6:36 ` Yongji Xie
2021-03-05 7:01 ` Jason Wang
2021-03-05 7:27 ` Yongji Xie
2021-03-05 7:36 ` Jason Wang
2021-03-05 8:12 ` Yongji Xie
2021-03-08 3:04 ` Jason Wang
2021-03-08 4:50 ` Yongji Xie
2021-03-08 7:01 ` Jason Wang
2021-03-08 7:16 ` Yongji Xie
2021-03-08 7:29 ` Jason Wang
2021-02-23 11:50 ` [RFC v4 11/11] vduse: Support binding irq to the specified cpu Xie Yongji
2021-03-04 7:30 ` Jason Wang
2021-03-04 8:19 ` Yongji Xie
2021-03-05 3:11 ` Jason Wang
2021-03-05 3:37 ` Yongji Xie
2021-03-05 3:44 ` Jason Wang
2021-03-05 6:40 ` Yongji Xie
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