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    Subject[PATCH v2 15/17] vdpa_sim: make vdpasim->buffer size configurable
    Date
    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>
    ---
    drivers/vdpa/vdpa_sim/vdpa_sim.c | 4 +++-
    1 file changed, 3 insertions(+), 1 deletion(-)

    diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c
    index 3bcf622949c8..f5f41f20ee0b 100644
    --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
    +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
    @@ -63,6 +63,7 @@ struct vdpasim;
    struct vdpasim_dev_attr {
    u64 supported_features;
    size_t config_size;
    + size_t buffer_size;
    int nvqs;
    u32 id;

    @@ -405,7 +406,7 @@ 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;

    @@ -766,6 +767,7 @@ 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);

    --
    2.26.2
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