On 2020/12/29 下午7:41, Eli Cohen wrote:
On Wed, Dec 16, 2020 at 02:48:08PM +0800, Jason Wang wrote:This patch converts the vhost-vDPA device to support multiple IOTLBs tagged via ASID via hlist. This will be used for supporting multiple address spaces in the following patches. Signed-off-by: Jason Wang <jasow...@redhat.com> --- drivers/vhost/vdpa.c | 106 ++++++++++++++++++++++++++++++++----------- 1 file changed, 80 insertions(+), 26 deletions(-) diff --git a/drivers/vhost/vdpa.c b/drivers/vhost/vdpa.c index feb6a58df22d..060d5b5b7e64 100644 --- a/drivers/vhost/vdpa.c +++ b/drivers/vhost/vdpa.c @@ -33,13 +33,21 @@ enum {#define VHOST_VDPA_DEV_MAX (1U << MINORBITS) +#define VHOST_VDPA_IOTLB_BUCKETS 16+ +struct vhost_vdpa_as { + struct hlist_node hash_link; + struct vhost_iotlb iotlb; + u32 id; +}; + struct vhost_vdpa { struct vhost_dev vdev; struct iommu_domain *domain; struct vhost_virtqueue *vqs; struct completion completion; struct vdpa_device *vdpa; - struct vhost_iotlb *iotlb; + struct hlist_head as[VHOST_VDPA_IOTLB_BUCKETS]; struct device dev; struct cdev cdev; atomic_t opened; @@ -49,12 +57,64 @@ struct vhost_vdpa { struct eventfd_ctx *config_ctx; int in_batch; struct vdpa_iova_range range; + int used_as;This is not really used. Not in this patch and later removed.
Right, will remove this. Thanks
