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[PATCH 1/2] vdpa-dev: get iova range explicitly
From: |
Longpeng(Mike) |
Subject: |
[PATCH 1/2] vdpa-dev: get iova range explicitly |
Date: |
Sat, 24 Dec 2022 19:48:47 +0800 |
From: Longpeng <longpeng2@huawei.com>
In commit a585fad26b ("vdpa: request iova_range only once") we remove
GET_IOVA_RANGE form vhost_vdpa_init, the generic vdpa device will start
without iova_range populated, so the device won't work. Let's call
GET_IOVA_RANGE ioctl explicitly.
Fixes: a585fad26b2e6ccc ("vdpa: request iova_range only once")
Signed-off-by: Longpeng <longpeng2@huawei.com>
---
hw/virtio/vdpa-dev.c | 9 +++++++++
hw/virtio/vhost-vdpa.c | 7 +++++++
include/hw/virtio/vhost-vdpa.h | 2 ++
net/vhost-vdpa.c | 8 --------
4 files changed, 18 insertions(+), 8 deletions(-)
diff --git a/hw/virtio/vdpa-dev.c b/hw/virtio/vdpa-dev.c
index db6ba61152..01b41eb0f1 100644
--- a/hw/virtio/vdpa-dev.c
+++ b/hw/virtio/vdpa-dev.c
@@ -53,6 +53,7 @@ static void vhost_vdpa_device_realize(DeviceState *dev, Error
**errp)
{
VirtIODevice *vdev = VIRTIO_DEVICE(dev);
VhostVdpaDevice *v = VHOST_VDPA_DEVICE(vdev);
+ struct vhost_vdpa_iova_range iova_range;
uint16_t max_queue_size;
struct vhost_virtqueue *vqs;
int i, ret;
@@ -108,6 +109,14 @@ static void vhost_vdpa_device_realize(DeviceState *dev,
Error **errp)
v->dev.backend_features = 0;
v->started = false;
+ ret = vhost_vdpa_get_iova_range(v->vhostfd, &iova_range);
+ if (ret < 0) {
+ error_setg(errp, "vhost-vdpa-device: get iova range failed: %s",
+ strerror(-ret));
+ goto free_vqs;
+ }
+ v->vdpa.iova_range = iova_range;
+
ret = vhost_dev_init(&v->dev, &v->vdpa, VHOST_BACKEND_TYPE_VDPA, 0, NULL);
if (ret < 0) {
error_setg(errp, "vhost-vdpa-device: vhost initialization failed: %s",
diff --git a/hw/virtio/vhost-vdpa.c b/hw/virtio/vhost-vdpa.c
index 870265188a..109a2ee3bf 100644
--- a/hw/virtio/vhost-vdpa.c
+++ b/hw/virtio/vhost-vdpa.c
@@ -378,6 +378,13 @@ static int vhost_vdpa_add_status(struct vhost_dev *dev,
uint8_t status)
return 0;
}
+int vhost_vdpa_get_iova_range(int fd, struct vhost_vdpa_iova_range *iova_range)
+{
+ int ret = ioctl(fd, VHOST_VDPA_GET_IOVA_RANGE, iova_range);
+
+ return ret < 0 ? -errno : 0;
+}
+
/*
* The use of this function is for requests that only need to be
* applied once. Typically such request occurs at the beginning
diff --git a/include/hw/virtio/vhost-vdpa.h b/include/hw/virtio/vhost-vdpa.h
index 45b969a311..7997f09a8d 100644
--- a/include/hw/virtio/vhost-vdpa.h
+++ b/include/hw/virtio/vhost-vdpa.h
@@ -51,6 +51,8 @@ typedef struct vhost_vdpa {
VhostVDPAHostNotifier notifier[VIRTIO_QUEUE_MAX];
} VhostVDPA;
+int vhost_vdpa_get_iova_range(int fd, struct vhost_vdpa_iova_range
*iova_range);
+
int vhost_vdpa_dma_map(struct vhost_vdpa *v, uint32_t asid, hwaddr iova,
hwaddr size, void *vaddr, bool readonly);
int vhost_vdpa_dma_unmap(struct vhost_vdpa *v, uint32_t asid, hwaddr iova,
diff --git a/net/vhost-vdpa.c b/net/vhost-vdpa.c
index d36664f33a..ffdc435d19 100644
--- a/net/vhost-vdpa.c
+++ b/net/vhost-vdpa.c
@@ -702,14 +702,6 @@ static NetClientState *net_vhost_vdpa_init(NetClientState
*peer,
return nc;
}
-static int vhost_vdpa_get_iova_range(int fd,
- struct vhost_vdpa_iova_range *iova_range)
-{
- int ret = ioctl(fd, VHOST_VDPA_GET_IOVA_RANGE, iova_range);
-
- return ret < 0 ? -errno : 0;
-}
-
static int vhost_vdpa_get_features(int fd, uint64_t *features, Error **errp)
{
int ret = ioctl(fd, VHOST_GET_FEATURES, features);
--
2.23.0