Commit f7a60e7d authored Nov 06, 2023 by Stefano Garzarella Committed by jiangdongxu Dec 13, 2023

vdpa: add bind_mm/unbind_mm callbacks

mainline inclusion
from mainline-v6.4-rc1
commit 9067de47
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I86ITO
Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=9067de4725a299bc1baf11de9f5040fdd0bd05c3



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These new optional callbacks is used to bind/unbind the device to
a specific address space so the vDPA framework can use VA when
these callbacks are implemented.

Suggested-by: Jason Wang <jasowang@redhat.com>
Acked-by: Jason Wang <jasowang@redhat.com>
Signed-off-by: Stefano Garzarella <sgarzare@redhat.com>
Message-Id: <20230404131326.44403-2-sgarzare@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: jiangdongxu <jiangdongxu1@huawei.com>

parent 44b974a9

include/linux/vdpa.h

+10 −0

Original line number	Diff line number	Diff line
		@@ -282,6 +282,14 @@ struct vdpa_map_file {
		* @iova: iova to be unmapped
		* @size: size of the area
		* Returns integer: success (0) or error (< 0)
		* @bind_mm: Bind the device to a specific address space
		* so the vDPA framework can use VA when this
		* callback is implemented. (optional)
		* @vdev: vdpa device
		* @mm: address space to bind
		* @unbind_mm: Unbind the device from the address space
		* bound using the bind_mm callback. (optional)
		* @vdev: vdpa device
		* @free: Free resources that belongs to vDPA (optional)
		* @vdev: vdpa device
		*/
		@@ -342,6 +350,8 @@ struct vdpa_config_ops {
		u64 iova, u64 size);
		int (set_group_asid)(struct vdpa_device vdev, unsigned int group,
		unsigned int asid);
		int (bind_mm)(struct vdpa_device vdev, struct mm_struct *mm);
		void (unbind_mm)(struct vdpa_device vdev);

		/* Free device resources */
		void (free)(struct vdpa_device vdev);