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Subject[PATCH v4 16/18] 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 87529899033a..60e45db29b15 100644
--- a/drivers/vdpa/vdpa_sim/vdpa_sim.c
+++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c
@@ -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);

--
2.26.2
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