From: Jason Wang <jasowang@redhat.com> To: mst@redhat.com, jasowang@redhat.com Cc: eperezma@redhat.com, kvm@vger.kernel.org, virtualization@lists.linux-foundation.org, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, lulu@redhat.com, eli@mellanox.com, lingshan.zhu@intel.com, rob.miller@broadcom.com, stefanha@redhat.com, sgarzare@redhat.com Subject: [PATCH 10/21] vhost: support ASID in IOTLB API Date: Wed, 16 Dec 2020 14:48:07 +0800 [thread overview] Message-ID: <20201216064818.48239-11-jasowang@redhat.com> (raw) In-Reply-To: <20201216064818.48239-1-jasowang@redhat.com> This patches allows userspace to send ASID based IOTLB message to vhost. This idea is to use the reserved u32 field in the existing V2 IOTLB message. Vhost device should advertise this capability via VHOST_BACKEND_F_IOTLB_ASID backend feature. Signed-off-by: Jason Wang <jasowang@redhat.com> --- drivers/vhost/vdpa.c | 5 ++++- drivers/vhost/vhost.c | 23 ++++++++++++++++++----- drivers/vhost/vhost.h | 4 ++-- include/uapi/linux/vhost_types.h | 5 ++++- 4 files changed, 28 insertions(+), 9 deletions(-) diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index 03a9b3311c6c..feb6a58df22d 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -739,7 +739,7 @@ static int vhost_vdpa_process_iotlb_update(struct vhost_vdpa *v, return ret; } -static int vhost_vdpa_process_iotlb_msg(struct vhost_dev *dev, +static int vhost_vdpa_process_iotlb_msg(struct vhost_dev *dev, u32 asid, struct vhost_iotlb_msg *msg) { struct vhost_vdpa *v = container_of(dev, struct vhost_vdpa, vdev); @@ -748,6 +748,9 @@ static int vhost_vdpa_process_iotlb_msg(struct vhost_dev *dev, struct vhost_iotlb *iotlb = v->iotlb; int r = 0; + if (asid != 0) + return -EINVAL; + r = vhost_dev_check_owner(dev); if (r) return r; diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index a262e12c6dc2..7477b724c29b 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -468,7 +468,7 @@ void vhost_dev_init(struct vhost_dev *dev, struct vhost_virtqueue **vqs, int nvqs, int iov_limit, int weight, int byte_weight, bool use_worker, - int (*msg_handler)(struct vhost_dev *dev, + int (*msg_handler)(struct vhost_dev *dev, u32 asid, struct vhost_iotlb_msg *msg)) { struct vhost_virtqueue *vq; @@ -1084,11 +1084,14 @@ static bool umem_access_ok(u64 uaddr, u64 size, int access) return true; } -static int vhost_process_iotlb_msg(struct vhost_dev *dev, +static int vhost_process_iotlb_msg(struct vhost_dev *dev, u16 asid, struct vhost_iotlb_msg *msg) { int ret = 0; + if (asid != 0) + return -EINVAL; + mutex_lock(&dev->mutex); vhost_dev_lock_vqs(dev); switch (msg->type) { @@ -1135,6 +1138,7 @@ ssize_t vhost_chr_write_iter(struct vhost_dev *dev, struct vhost_iotlb_msg msg; size_t offset; int type, ret; + u16 asid = 0; ret = copy_from_iter(&type, sizeof(type), from); if (ret != sizeof(type)) { @@ -1150,7 +1154,16 @@ ssize_t vhost_chr_write_iter(struct vhost_dev *dev, offset = offsetof(struct vhost_msg, iotlb) - sizeof(int); break; case VHOST_IOTLB_MSG_V2: - offset = sizeof(__u32); + if (vhost_backend_has_feature(dev->vqs[0], + VHOST_BACKEND_F_IOTLB_ASID)) { + ret = copy_from_iter(&asid, sizeof(asid), from); + if (ret != sizeof(asid)) { + ret = -EINVAL; + goto done; + } + offset = sizeof(__u16); + } else + offset = sizeof(__u32); break; default: ret = -EINVAL; @@ -1165,9 +1178,9 @@ ssize_t vhost_chr_write_iter(struct vhost_dev *dev, } if (dev->msg_handler) - ret = dev->msg_handler(dev, &msg); + ret = dev->msg_handler(dev, asid, &msg); else - ret = vhost_process_iotlb_msg(dev, &msg); + ret = vhost_process_iotlb_msg(dev, asid, &msg); if (ret) { ret = -EFAULT; goto done; diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index b063324c7669..19753a90875c 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -162,7 +162,7 @@ struct vhost_dev { int byte_weight; u64 kcov_handle; bool use_worker; - int (*msg_handler)(struct vhost_dev *dev, + int (*msg_handler)(struct vhost_dev *dev, u32 asid, struct vhost_iotlb_msg *msg); }; @@ -170,7 +170,7 @@ bool vhost_exceeds_weight(struct vhost_virtqueue *vq, int pkts, int total_len); void vhost_dev_init(struct vhost_dev *, struct vhost_virtqueue **vqs, int nvqs, int iov_limit, int weight, int byte_weight, bool use_worker, - int (*msg_handler)(struct vhost_dev *dev, + int (*msg_handler)(struct vhost_dev *dev, u32 asid, struct vhost_iotlb_msg *msg)); long vhost_dev_set_owner(struct vhost_dev *dev); bool vhost_dev_has_owner(struct vhost_dev *dev); diff --git a/include/uapi/linux/vhost_types.h b/include/uapi/linux/vhost_types.h index 76ee7016c501..222fc66ce2ac 100644 --- a/include/uapi/linux/vhost_types.h +++ b/include/uapi/linux/vhost_types.h @@ -87,7 +87,7 @@ struct vhost_msg { struct vhost_msg_v2 { __u32 type; - __u32 reserved; + __u32 asid; union { struct vhost_iotlb_msg iotlb; __u8 padding[64]; @@ -157,5 +157,8 @@ struct vhost_vdpa_iova_range { #define VHOST_BACKEND_F_IOTLB_MSG_V2 0x1 /* IOTLB can accept batching hints */ #define VHOST_BACKEND_F_IOTLB_BATCH 0x2 +/* IOTLB can accept address space identifier through V2 type of IOTLB + message */ +#define VHOST_BACKEND_F_IOTLB_ASID 0x3 #endif -- 2.25.1
WARNING: multiple messages have this Message-ID (diff)
From: Jason Wang <jasowang@redhat.com> To: mst@redhat.com, jasowang@redhat.com Cc: kvm@vger.kernel.org, lulu@redhat.com, netdev@vger.kernel.org, linux-kernel@vger.kernel.org, virtualization@lists.linux-foundation.org, eperezma@redhat.com, stefanha@redhat.com, eli@mellanox.com, lingshan.zhu@intel.com, rob.miller@broadcom.com Subject: [PATCH 10/21] vhost: support ASID in IOTLB API Date: Wed, 16 Dec 2020 14:48:07 +0800 [thread overview] Message-ID: <20201216064818.48239-11-jasowang@redhat.com> (raw) In-Reply-To: <20201216064818.48239-1-jasowang@redhat.com> This patches allows userspace to send ASID based IOTLB message to vhost. This idea is to use the reserved u32 field in the existing V2 IOTLB message. Vhost device should advertise this capability via VHOST_BACKEND_F_IOTLB_ASID backend feature. Signed-off-by: Jason Wang <jasowang@redhat.com> --- drivers/vhost/vdpa.c | 5 ++++- drivers/vhost/vhost.c | 23 ++++++++++++++++++----- drivers/vhost/vhost.h | 4 ++-- include/uapi/linux/vhost_types.h | 5 ++++- 4 files changed, 28 insertions(+), 9 deletions(-) diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index 03a9b3311c6c..feb6a58df22d 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -739,7 +739,7 @@ static int vhost_vdpa_process_iotlb_update(struct vhost_vdpa *v, return ret; } -static int vhost_vdpa_process_iotlb_msg(struct vhost_dev *dev, +static int vhost_vdpa_process_iotlb_msg(struct vhost_dev *dev, u32 asid, struct vhost_iotlb_msg *msg) { struct vhost_vdpa *v = container_of(dev, struct vhost_vdpa, vdev); @@ -748,6 +748,9 @@ static int vhost_vdpa_process_iotlb_msg(struct vhost_dev *dev, struct vhost_iotlb *iotlb = v->iotlb; int r = 0; + if (asid != 0) + return -EINVAL; + r = vhost_dev_check_owner(dev); if (r) return r; diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index a262e12c6dc2..7477b724c29b 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -468,7 +468,7 @@ void vhost_dev_init(struct vhost_dev *dev, struct vhost_virtqueue **vqs, int nvqs, int iov_limit, int weight, int byte_weight, bool use_worker, - int (*msg_handler)(struct vhost_dev *dev, + int (*msg_handler)(struct vhost_dev *dev, u32 asid, struct vhost_iotlb_msg *msg)) { struct vhost_virtqueue *vq; @@ -1084,11 +1084,14 @@ static bool umem_access_ok(u64 uaddr, u64 size, int access) return true; } -static int vhost_process_iotlb_msg(struct vhost_dev *dev, +static int vhost_process_iotlb_msg(struct vhost_dev *dev, u16 asid, struct vhost_iotlb_msg *msg) { int ret = 0; + if (asid != 0) + return -EINVAL; + mutex_lock(&dev->mutex); vhost_dev_lock_vqs(dev); switch (msg->type) { @@ -1135,6 +1138,7 @@ ssize_t vhost_chr_write_iter(struct vhost_dev *dev, struct vhost_iotlb_msg msg; size_t offset; int type, ret; + u16 asid = 0; ret = copy_from_iter(&type, sizeof(type), from); if (ret != sizeof(type)) { @@ -1150,7 +1154,16 @@ ssize_t vhost_chr_write_iter(struct vhost_dev *dev, offset = offsetof(struct vhost_msg, iotlb) - sizeof(int); break; case VHOST_IOTLB_MSG_V2: - offset = sizeof(__u32); + if (vhost_backend_has_feature(dev->vqs[0], + VHOST_BACKEND_F_IOTLB_ASID)) { + ret = copy_from_iter(&asid, sizeof(asid), from); + if (ret != sizeof(asid)) { + ret = -EINVAL; + goto done; + } + offset = sizeof(__u16); + } else + offset = sizeof(__u32); break; default: ret = -EINVAL; @@ -1165,9 +1178,9 @@ ssize_t vhost_chr_write_iter(struct vhost_dev *dev, } if (dev->msg_handler) - ret = dev->msg_handler(dev, &msg); + ret = dev->msg_handler(dev, asid, &msg); else - ret = vhost_process_iotlb_msg(dev, &msg); + ret = vhost_process_iotlb_msg(dev, asid, &msg); if (ret) { ret = -EFAULT; goto done; diff --git a/drivers/vhost/vhost.h b/drivers/vhost/vhost.h index b063324c7669..19753a90875c 100644 --- a/drivers/vhost/vhost.h +++ b/drivers/vhost/vhost.h @@ -162,7 +162,7 @@ struct vhost_dev { int byte_weight; u64 kcov_handle; bool use_worker; - int (*msg_handler)(struct vhost_dev *dev, + int (*msg_handler)(struct vhost_dev *dev, u32 asid, struct vhost_iotlb_msg *msg); }; @@ -170,7 +170,7 @@ bool vhost_exceeds_weight(struct vhost_virtqueue *vq, int pkts, int total_len); void vhost_dev_init(struct vhost_dev *, struct vhost_virtqueue **vqs, int nvqs, int iov_limit, int weight, int byte_weight, bool use_worker, - int (*msg_handler)(struct vhost_dev *dev, + int (*msg_handler)(struct vhost_dev *dev, u32 asid, struct vhost_iotlb_msg *msg)); long vhost_dev_set_owner(struct vhost_dev *dev); bool vhost_dev_has_owner(struct vhost_dev *dev); diff --git a/include/uapi/linux/vhost_types.h b/include/uapi/linux/vhost_types.h index 76ee7016c501..222fc66ce2ac 100644 --- a/include/uapi/linux/vhost_types.h +++ b/include/uapi/linux/vhost_types.h @@ -87,7 +87,7 @@ struct vhost_msg { struct vhost_msg_v2 { __u32 type; - __u32 reserved; + __u32 asid; union { struct vhost_iotlb_msg iotlb; __u8 padding[64]; @@ -157,5 +157,8 @@ struct vhost_vdpa_iova_range { #define VHOST_BACKEND_F_IOTLB_MSG_V2 0x1 /* IOTLB can accept batching hints */ #define VHOST_BACKEND_F_IOTLB_BATCH 0x2 +/* IOTLB can accept address space identifier through V2 type of IOTLB + message */ +#define VHOST_BACKEND_F_IOTLB_ASID 0x3 #endif -- 2.25.1 _______________________________________________ Virtualization mailing list Virtualization@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/virtualization
next prev parent reply other threads:[~2020-12-16 6:51 UTC|newest] Thread overview: 136+ messages / expand[flat|nested] mbox.gz Atom feed top 2020-12-16 6:47 [PATCH 00/21] Control VQ support in vDPA Jason Wang 2020-12-16 6:47 ` Jason Wang 2020-12-16 6:47 ` [PATCH 01/21] vhost: move the backend feature bits to vhost_types.h Jason Wang 2020-12-16 6:47 ` Jason Wang 2020-12-16 6:47 ` [PATCH 02/21] virtio-vdpa: don't set callback if virtio doesn't need it Jason Wang 2020-12-16 6:47 ` Jason Wang 2020-12-16 6:48 ` [PATCH 03/21] vhost-vdpa: passing iotlb to IOMMU mapping helpers Jason Wang 2020-12-16 6:48 ` Jason Wang 2020-12-16 6:48 ` [PATCH 04/21] vhost-vdpa: switch to use vhost-vdpa specific IOTLB Jason Wang 2020-12-16 6:48 ` Jason Wang 2020-12-16 6:48 ` [PATCH 05/21] vdpa: add the missing comment for nvqs in struct vdpa_device Jason Wang 2020-12-16 6:48 ` Jason Wang 2020-12-16 6:48 ` [PATCH 06/21] vdpa: introduce virtqueue groups Jason Wang 2020-12-16 6:48 ` Jason Wang 2021-01-04 10:04 ` Stefan Hajnoczi 2021-01-04 10:04 ` Stefan Hajnoczi 2021-01-05 4:13 ` Jason Wang 2021-01-05 4:13 ` Jason Wang 2020-12-16 6:48 ` [PATCH 07/21] vdpa: multiple address spaces support Jason Wang 2020-12-16 6:48 ` Jason Wang 2020-12-29 7:28 ` Eli Cohen 2020-12-30 4:00 ` Jason Wang 2020-12-30 4:00 ` Jason Wang 2020-12-30 4:04 ` Jason Wang 2020-12-30 4:04 ` Jason Wang 2020-12-30 9:44 ` Eli Cohen 2020-12-16 6:48 ` [PATCH 08/21] vdpa: introduce config operations for associating ASID to a virtqueue group Jason Wang 2020-12-16 6:48 ` Jason Wang 2020-12-16 6:48 ` [PATCH 09/21] vhost_iotlb: split out IOTLB initialization Jason Wang 2020-12-16 6:48 ` Jason Wang 2020-12-16 6:48 ` Jason Wang [this message] 2020-12-16 6:48 ` [PATCH 10/21] vhost: support ASID in IOTLB API Jason Wang 2020-12-29 10:20 ` Eli Cohen 2020-12-30 4:27 ` Jason Wang 2020-12-30 4:27 ` Jason Wang 2020-12-16 6:48 ` [PATCH 11/21] vhost-vdpa: introduce asid based IOTLB Jason Wang 2020-12-16 6:48 ` Jason Wang 2020-12-29 11:41 ` Eli Cohen 2020-12-30 6:23 ` Jason Wang 2020-12-30 6:23 ` Jason Wang 2020-12-29 11:53 ` Eli Cohen 2020-12-30 6:34 ` Jason Wang 2020-12-30 6:34 ` Jason Wang 2020-12-29 12:05 ` Eli Cohen 2020-12-30 6:33 ` Jason Wang 2020-12-30 6:33 ` Jason Wang 2020-12-16 6:48 ` [PATCH 12/21] vhost-vdpa: introduce uAPI to get the number of virtqueue groups Jason Wang 2020-12-16 6:48 ` Jason Wang 2020-12-29 12:24 ` Eli Cohen 2020-12-30 6:49 ` Jason Wang 2020-12-30 6:49 ` Jason Wang 2020-12-30 10:05 ` Eli Cohen 2020-12-31 2:36 ` Jason Wang 2020-12-31 2:36 ` Jason Wang 2020-12-16 6:48 ` [PATCH 13/21] vhost-vdpa: introduce uAPI to get the number of address spaces Jason Wang 2020-12-16 6:48 ` Jason Wang 2020-12-16 6:48 ` [PATCH 14/21] vhost-vdpa: uAPI to get virtqueue group id Jason Wang 2020-12-16 6:48 ` Jason Wang 2020-12-16 6:48 ` [PATCH 15/21] vhost-vdpa: introduce uAPI to set group ASID Jason Wang 2020-12-16 6:48 ` Jason Wang 2020-12-16 6:48 ` [PATCH 16/21] vhost-vdpa: support ASID based IOTLB API Jason Wang 2020-12-16 6:48 ` Jason Wang 2020-12-16 6:48 ` [PATCH 17/21] vdpa_sim: split vdpasim_virtqueue's iov field in out_iov and in_iov Jason Wang 2020-12-16 6:48 ` Jason Wang 2020-12-16 6:48 ` [PATCH 18/21] vdpa_sim: advertise VIRTIO_NET_F_MTU Jason Wang 2020-12-16 6:48 ` Jason Wang 2020-12-16 6:48 ` [PATCH 19/21] vdpa_sim: factor out buffer completion logic Jason Wang 2020-12-16 6:48 ` Jason Wang 2020-12-16 6:48 ` [PATCH 20/21] vdpa_sim: filter destination mac address Jason Wang 2020-12-16 6:48 ` Jason Wang 2020-12-16 6:48 ` [PATCH 21/21] vdpasim: control virtqueue support Jason Wang 2020-12-16 6:48 ` Jason Wang 2020-12-17 20:19 ` kernel test robot 2020-12-17 20:19 ` kernel test robot 2020-12-17 20:19 ` kernel test robot 2021-01-11 12:26 ` Eli Cohen 2021-01-12 3:11 ` Jason Wang 2021-01-12 3:11 ` Jason Wang 2021-01-22 19:43 ` Eugenio Perez Martin 2021-01-25 3:16 ` Jason Wang 2021-01-25 3:16 ` Jason Wang 2020-12-16 9:47 ` [PATCH 00/21] Control VQ support in vDPA Michael S. Tsirkin 2020-12-16 9:47 ` Michael S. Tsirkin 2020-12-17 3:30 ` Jason Wang 2020-12-17 3:30 ` Jason Wang 2020-12-17 7:58 ` Michael S. Tsirkin 2020-12-17 7:58 ` Michael S. Tsirkin 2020-12-17 9:02 ` Jason Wang 2020-12-17 9:02 ` Jason Wang 2020-12-17 22:28 ` Michael S. Tsirkin 2020-12-17 22:28 ` Michael S. Tsirkin 2020-12-18 2:56 ` Jason Wang 2020-12-18 2:56 ` Jason Wang 2020-12-17 7:26 ` Eli Cohen 2022-02-24 21:22 ` [RFC PATCH v2 00/19] " Gautam Dawar 2022-02-24 21:22 ` [RFC PATCH v2 01/19] vhost: move the backend feature bits to vhost_types.h Gautam Dawar 2022-02-24 21:22 ` [RFC PATCH v2 02/19] virtio-vdpa: don't set callback if virtio doesn't need it Gautam Dawar 2022-02-24 21:22 ` [RFC PATCH v2 03/19] vhost-vdpa: passing iotlb to IOMMU mapping helpers Gautam Dawar 2022-02-24 21:22 ` [RFC PATCH v2 04/19] vhost-vdpa: switch to use vhost-vdpa specific IOTLB Gautam Dawar 2022-02-24 21:22 ` [RFC PATCH v2 05/19] vdpa: introduce virtqueue groups Gautam Dawar 2022-02-28 8:07 ` Jason Wang 2022-02-28 8:07 ` Jason Wang 2022-02-28 10:57 ` Gautam Dawar 2022-02-24 21:22 ` [RFC PATCH v2 06/19] vdpa: multiple address spaces support Gautam Dawar 2022-03-03 19:39 ` Eugenio Perez Martin 2022-03-04 6:30 ` Gautam Dawar 2022-03-04 17:45 ` Eugenio Perez Martin 2022-02-24 21:22 ` [RFC PATCH v2 07/19] vdpa: introduce config operations for associating ASID to a virtqueue group Gautam Dawar 2022-03-04 9:54 ` Eugenio Perez Martin 2022-03-04 17:48 ` Gautam Dawar 2022-02-24 21:22 ` [RFC PATCH v2 08/19] vhost_iotlb: split out IOTLB initialization Gautam Dawar 2022-02-24 21:22 ` [RFC PATCH v2 09/19] vhost: support ASID in IOTLB API Gautam Dawar 2022-03-04 10:25 ` Eugenio Perez Martin 2022-03-04 17:52 ` Gautam Dawar 2022-02-24 21:22 ` [RFC PATCH v2 10/19] vhost-vdpa: introduce asid based IOTLB Gautam Dawar 2022-03-04 17:56 ` Eugenio Perez Martin 2022-03-07 10:07 ` Gautam Dawar 2022-02-24 21:22 ` [RFC PATCH v2 11/19] vhost-vdpa: introduce uAPI to get the number of virtqueue groups Gautam Dawar 2022-02-24 21:22 ` [RFC PATCH v2 12/19] vhost-vdpa: introduce uAPI to get the number of address spaces Gautam Dawar 2022-02-24 21:22 ` [RFC PATCH v2 13/19] vhost-vdpa: uAPI to get virtqueue group id Gautam Dawar 2022-02-24 21:22 ` [RFC PATCH v2 14/19] vhost-vdpa: introduce uAPI to set group ASID Gautam Dawar 2022-02-24 21:22 ` [RFC PATCH v2 15/19] vhost-vdpa: support ASID based IOTLB API Gautam Dawar 2022-03-04 18:04 ` Eugenio Perez Martin 2022-03-07 10:23 ` Gautam Dawar 2022-02-24 21:22 ` [RFC PATCH v2 16/19] vdpa_sim: advertise VIRTIO_NET_F_MTU Gautam Dawar 2022-03-10 17:55 ` Eugenio Perez Martin 2022-02-24 21:22 ` [RFC PATCH v2 17/19] vdpa_sim: factor out buffer completion logic Gautam Dawar 2022-02-24 21:22 ` [RFC PATCH v2 18/19] vdpa_sim: filter destination mac address Gautam Dawar 2022-03-10 18:22 ` Eugenio Perez Martin 2022-02-24 21:22 ` [RFC PATCH v2 19/19] vdpasim: control virtqueue support Gautam Dawar 2022-03-10 18:20 ` Eugenio Perez Martin 2022-03-18 7:35 ` Eugenio Perez Martin 2022-03-22 8:46 ` Gautam Dawar 2022-02-28 8:17 ` [RFC PATCH v2 00/19] Control VQ support in vDPA Jason Wang 2022-02-28 8:17 ` Jason Wang 2022-02-28 10:56 ` Gautam Dawar
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