From: Gautam Dawar <gautam.dawar@xilinx.com>
To: "Michael S. Tsirkin" <mst@redhat.com>,
Jason Wang <jasowang@redhat.com>, <kvm@vger.kernel.org>,
<virtualization@lists.linux-foundation.org>,
<netdev@vger.kernel.org>, <linux-kernel@vger.kernel.org>
Cc: <martinh@xilinx.com>, <hanand@xilinx.com>, <martinpo@xilinx.com>,
<pabloc@xilinx.com>, <dinang@xilinx.com>, <tanuj.kamde@amd.com>,
<habetsm.xilinx@gmail.com>, <ecree.xilinx@gmail.com>,
<eperezma@redhat.com>, Gautam Dawar <gdawar@xilinx.com>,
Wu Zongyong <wuzongyong@linux.alibaba.com>,
Christophe JAILLET <christophe.jaillet@wanadoo.fr>,
Eli Cohen <elic@nvidia.com>,
Zhu Lingshan <lingshan.zhu@intel.com>,
Stefano Garzarella <sgarzare@redhat.com>,
Xie Yongji <xieyongji@bytedance.com>,
Si-Wei Liu <si-wei.liu@oracle.com>,
Parav Pandit <parav@nvidia.com>, Longpeng <longpeng2@huawei.com>,
Dan Carpenter <dan.carpenter@oracle.com>,
Zhang Min <zhang.min9@zte.com.cn>
Subject: [PATCH v2 08/19] vhost_iotlb: split out IOTLB initialization
Date: Wed, 30 Mar 2022 23:33:48 +0530 [thread overview]
Message-ID: <20220330180436.24644-9-gdawar@xilinx.com> (raw)
In-Reply-To: <20220330180436.24644-1-gdawar@xilinx.com>
This patch splits out IOTLB initialization to make sure it could be
reused by external modules.
Signed-off-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Gautam Dawar <gdawar@xilinx.com>
---
drivers/vhost/iotlb.c | 23 ++++++++++++++++++-----
include/linux/vhost_iotlb.h | 2 ++
2 files changed, 20 insertions(+), 5 deletions(-)
diff --git a/drivers/vhost/iotlb.c b/drivers/vhost/iotlb.c
index 5829cf2d0552..ea61330a3431 100644
--- a/drivers/vhost/iotlb.c
+++ b/drivers/vhost/iotlb.c
@@ -125,6 +125,23 @@ void vhost_iotlb_del_range(struct vhost_iotlb *iotlb, u64 start, u64 last)
}
EXPORT_SYMBOL_GPL(vhost_iotlb_del_range);
+/**
+ * vhost_iotlb_init - initialize a vhost IOTLB
+ * @iotlb: the IOTLB that needs to be initialized
+ * @limit: maximum number of IOTLB entries
+ * @flags: VHOST_IOTLB_FLAG_XXX
+ */
+void vhost_iotlb_init(struct vhost_iotlb *iotlb, unsigned int limit,
+ unsigned int flags)
+{
+ iotlb->root = RB_ROOT_CACHED;
+ iotlb->limit = limit;
+ iotlb->nmaps = 0;
+ iotlb->flags = flags;
+ INIT_LIST_HEAD(&iotlb->list);
+}
+EXPORT_SYMBOL_GPL(vhost_iotlb_init);
+
/**
* vhost_iotlb_alloc - add a new vhost IOTLB
* @limit: maximum number of IOTLB entries
@@ -139,11 +156,7 @@ struct vhost_iotlb *vhost_iotlb_alloc(unsigned int limit, unsigned int flags)
if (!iotlb)
return NULL;
- iotlb->root = RB_ROOT_CACHED;
- iotlb->limit = limit;
- iotlb->nmaps = 0;
- iotlb->flags = flags;
- INIT_LIST_HEAD(&iotlb->list);
+ vhost_iotlb_init(iotlb, limit, flags);
return iotlb;
}
diff --git a/include/linux/vhost_iotlb.h b/include/linux/vhost_iotlb.h
index 2d0e2f52f938..e79a40838998 100644
--- a/include/linux/vhost_iotlb.h
+++ b/include/linux/vhost_iotlb.h
@@ -36,6 +36,8 @@ 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);
+void vhost_iotlb_init(struct vhost_iotlb *iotlb, unsigned int limit,
+ unsigned int flags);
struct vhost_iotlb *vhost_iotlb_alloc(unsigned int limit, unsigned int flags);
void vhost_iotlb_free(struct vhost_iotlb *iotlb);
void vhost_iotlb_reset(struct vhost_iotlb *iotlb);
--
2.30.1
next prev parent reply other threads:[~2022-03-30 18:12 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-03-30 18:03 [PATCH v2 00/19] Control VQ support in vDPA Gautam Dawar
2022-03-30 18:03 ` [PATCH v2 01/19] vhost: move the backend feature bits to vhost_types.h Gautam Dawar
2022-03-30 18:03 ` [PATCH v2 02/19] virtio-vdpa: don't set callback if virtio doesn't need it Gautam Dawar
2022-03-30 18:03 ` [PATCH v2 03/19] vhost-vdpa: passing iotlb to IOMMU mapping helpers Gautam Dawar
2022-03-30 18:03 ` [PATCH v2 04/19] vhost-vdpa: switch to use vhost-vdpa specific IOTLB Gautam Dawar
2022-03-30 18:03 ` [PATCH v2 05/19] vdpa: introduce virtqueue groups Gautam Dawar
2022-03-30 18:03 ` [PATCH v2 06/19] vdpa: multiple address spaces support Gautam Dawar
2022-03-30 18:03 ` [PATCH v2 07/19] vdpa: introduce config operations for associating ASID to a virtqueue group Gautam Dawar
2022-03-30 18:03 ` Gautam Dawar [this message]
2022-03-30 18:03 ` [PATCH v2 09/19] vhost: support ASID in IOTLB API Gautam Dawar
2022-03-30 18:03 ` [PATCH v2 10/19] vhost-vdpa: introduce asid based IOTLB Gautam Dawar
2022-03-30 18:03 ` [PATCH v2 11/19] vhost-vdpa: introduce uAPI to get the number of virtqueue groups Gautam Dawar
2022-03-30 18:03 ` [PATCH v2 12/19] vhost-vdpa: introduce uAPI to get the number of address spaces Gautam Dawar
2022-03-30 18:03 ` [PATCH v2 13/19] vhost-vdpa: uAPI to get virtqueue group id Gautam Dawar
2022-03-30 18:03 ` [PATCH v2 14/19] vhost-vdpa: introduce uAPI to set group ASID Gautam Dawar
2022-03-30 18:03 ` [PATCH v2 15/19] vhost-vdpa: support ASID based IOTLB API Gautam Dawar
2022-04-01 4:24 ` Jason Wang
2022-04-28 6:28 ` Gautam Dawar
2022-05-07 10:24 ` Jason Wang
2022-03-30 18:03 ` [PATCH v2 16/19] vdpa_sim: advertise VIRTIO_NET_F_MTU Gautam Dawar
2022-03-30 18:03 ` [PATCH v2 17/19] vdpa_sim: factor out buffer completion logic Gautam Dawar
2022-03-30 18:03 ` [PATCH v2 18/19] vdpa_sim: filter destination mac address Gautam Dawar
2022-03-30 18:03 ` [PATCH v2 19/19] vdpasim: control virtqueue support Gautam Dawar
2022-06-21 15:19 ` Stefano Garzarella
2022-06-22 10:21 ` Eugenio Perez Martin
2022-06-22 15:04 ` Eugenio Perez Martin
2022-06-22 15:44 ` Stefano Garzarella
2022-05-09 3:42 ` [PATCH v2 00/19] Control VQ support in vDPA Jason Wang
2022-05-09 7:07 ` Michael S. Tsirkin
2022-05-20 8:04 ` Eugenio Perez Martin
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