From: Stefano Garzarella sgarzare@redhat.com
commit 67f8f10c0bd78c4a0f0e983e050ab90da015323b upstream.
Commit bda324fd037a ("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: bda324fd037a ("vdpasim: control virtqueue support") Cc: gautam.dawar@xilinx.com Signed-off-by: Stefano Garzarella sgarzare@redhat.com Message-Id: 20220621151208.189959-1-sgarzare@redhat.com Signed-off-by: Michael S. Tsirkin mst@redhat.com Acked-by: Eugenio Pérez eperezma@redhat.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- drivers/vdpa/vdpa_sim/vdpa_sim.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/vdpa/vdpa_sim/vdpa_sim.c b/drivers/vdpa/vdpa_sim/vdpa_sim.c index 0f2865899647..3e81532c01cb 100644 --- a/drivers/vdpa/vdpa_sim/vdpa_sim.c +++ b/drivers/vdpa/vdpa_sim/vdpa_sim.c @@ -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)