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vdpa_sim: make vdpasim->buffer size configurable

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Allow each device to specify the size of the buffer allocated
in vdpa_sim.

Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Link: https://lore.kernel.org/r/20201215144256.155342-17-sgarzare@redhat.com
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Stefano Garzarella 2020-12-15 15:42:54 +01:00 committed by Michael S. Tsirkin
parent 165be1f80b
commit da7af6967c
1 changed files with 3 additions and 1 deletions
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4
drivers/vdpa/vdpa_sim/vdpa_sim.c
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@ -73,6 +73,7 @@ struct vdpasim;
struct vdpasim_dev_attr {
u64 supported_features;
size_t config_size;
size_t buffer_size;
int nvqs;
u32 id;
@ -418,7 +419,7 @@ static struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr)
if (!vdpasim->iommu)
goto err_iommu;
vdpasim->buffer = kvmalloc(PAGE_SIZE, GFP_KERNEL);
vdpasim->buffer = kvmalloc(dev_attr->buffer_size, GFP_KERNEL);
if (!vdpasim->buffer)
goto err_iommu;
@ -787,6 +788,7 @@ static int __init vdpasim_dev_init(void)
dev_attr.config_size = sizeof(struct virtio_net_config);
dev_attr.get_config = vdpasim_net_get_config;
dev_attr.work_fn = vdpasim_net_work;
dev_attr.buffer_size = PAGE_SIZE;
vdpasim_dev = vdpasim_create(&dev_attr);