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vdpasim: customize allocation size

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Allow individual simulator to customize the allocation size.

Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Acked-by: Eugenio Pérez <eperezma@redhat.com>
Signed-off-by: Jason Wang <jasowang@redhat.com>
Message-Id: <20221223055548.27810-3-jasowang@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Jason Wang 2022-12-23 13:55:46 +08:00 committed by Michael S. Tsirkin
parent 0497f23e73
commit bb105d514a
4 changed files with 7 additions and 1 deletions
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5
drivers/vdpa/vdpa_sim/vdpa_sim.c
View File

@ -256,6 +256,9 @@ struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr,
struct device *dev;
int i, ret = -ENOMEM;
if (!dev_attr->alloc_size)
return ERR_PTR(-EINVAL);
if (config->mask & BIT_ULL(VDPA_ATTR_DEV_FEATURES)) {
if (config->device_features &
~dev_attr->supported_features)
@ -271,7 +274,7 @@ struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr,
vdpa = __vdpa_alloc_device(NULL, ops,
dev_attr->ngroups, dev_attr->nas,
sizeof(struct vdpasim),
dev_attr->alloc_size,
dev_attr->name, false);
if (IS_ERR(vdpa)) {
ret = PTR_ERR(vdpa);

1
drivers/vdpa/vdpa_sim/vdpa_sim.h
View File

@ -37,6 +37,7 @@ struct vdpasim_dev_attr {
struct vdpa_mgmt_dev *mgmt_dev;
const char *name;
u64 supported_features;
size_t alloc_size;
size_t config_size;
size_t buffer_size;
int nvqs;

1
drivers/vdpa/vdpa_sim/vdpa_sim_blk.c
View File

@ -378,6 +378,7 @@ static int vdpasim_blk_dev_add(struct vdpa_mgmt_dev *mdev, const char *name,
dev_attr.nvqs = VDPASIM_BLK_VQ_NUM;
dev_attr.ngroups = VDPASIM_BLK_GROUP_NUM;
dev_attr.nas = VDPASIM_BLK_AS_NUM;
dev_attr.alloc_size = sizeof(struct vdpasim);
dev_attr.config_size = sizeof(struct virtio_blk_config);
dev_attr.get_config = vdpasim_blk_get_config;
dev_attr.work_fn = vdpasim_blk_work;

1
drivers/vdpa/vdpa_sim/vdpa_sim_net.c
View File

@ -253,6 +253,7 @@ static int vdpasim_net_dev_add(struct vdpa_mgmt_dev *mdev, const char *name,
dev_attr.nvqs = VDPASIM_NET_VQ_NUM;
dev_attr.ngroups = VDPASIM_NET_GROUP_NUM;
dev_attr.nas = VDPASIM_NET_AS_NUM;
dev_attr.alloc_size = sizeof(struct vdpasim);
dev_attr.config_size = sizeof(struct virtio_net_config);
dev_attr.get_config = vdpasim_net_get_config;
dev_attr.work_fn = vdpasim_net_work;