Commit 67f8f10c authored by Stefano Garzarella's avatar Stefano Garzarella Committed by Michael S. Tsirkin
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vdpa_sim: use max_iotlb_entries as a limit in vhost_iotlb_init 



Commit bda324fd ("vdpasim: control virtqueue support") changed
the allocation of iotlbs calling vhost_iotlb_init() for each address
space, instead of vhost_iotlb_alloc().

With this change we forgot to use the limit we had introduced with
the `max_iotlb_entries` module parameter.

Fixes: bda324fd ("vdpasim: control virtqueue support")
Cc: gautam.dawar@xilinx.com
Signed-off-by: default avatarStefano Garzarella <sgarzare@redhat.com>
Message-Id: <20220621151208.189959-1-sgarzare@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Acked-by: default avatarEugenio Pérez <eperezma@redhat.com>
parent 19cd4a54

drivers/vdpa/vdpa_sim/vdpa_sim.c

+2 −2
Original line number Diff line number Diff line
@@ -33,7 +33,7 @@ MODULE_PARM_DESC(batch_mapping, "Batched mapping 1 -Enable; 0 - Disable"); 
static int max_iotlb_entries = 2048;

module_param(max_iotlb_entries, int, 0444);

MODULE_PARM_DESC(max_iotlb_entries,

		 "Maximum number of iotlb entries. 0 means unlimited. (default: 2048)");

		 "Maximum number of iotlb entries for each address space. 0 means unlimited. (default: 2048)");



#define VDPASIM_QUEUE_ALIGN PAGE_SIZE

#define VDPASIM_QUEUE_MAX 256
@@ -291,7 +291,7 @@ struct vdpasim *vdpasim_create(struct vdpasim_dev_attr *dev_attr) 
		goto err_iommu;



	for (i = 0; i < vdpasim->dev_attr.nas; i++)

		vhost_iotlb_init(&vdpasim->iommu[i], 0, 0);

		vhost_iotlb_init(&vdpasim->iommu[i], max_iotlb_entries, 0);



	vdpasim->buffer = kvmalloc(dev_attr->buffer_size, GFP_KERNEL);

	if (!vdpasim->buffer)