Commit a4ad36a2 authored by Eugenio Pérez's avatar Eugenio Pérez Committed by Pengyuan Zhao
Browse files

vdpa: Add suspend operation 

mainline inclusion
from mainline-v6.0-rc1
commit 848ecea1
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I5WXCZ
CVE: NA

Reference: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=848ecea184e1253758423b37cbfc1ed732ccf5b4



----------------------------------------------------------------------

This operation is optional: It it's not implemented, backend feature bit
will not be exposed.

Signed-off-by: default avatarEugenio Pérez <eperezma@redhat.com>
Message-Id: <20220810171512.2343333-2-eperezma@redhat.com>
Signed-off-by: default avatarMichael S. Tsirkin <mst@redhat.com>
Signed-off-by: default avatarPengyuan Zhao <zhaopengyuan@hisilicon.com>
parent f95642a3

include/linux/vdpa.h

+4 −0
Original line number Diff line number Diff line
@@ -216,6 +216,9 @@ struct vdpa_map_file { 
 * @reset:			Reset device

 *				@vdev: vdpa device

 *				Returns integer: success (0) or error (< 0)

 * @suspend:			Suspend or resume the device (optional)

 *				@vdev: vdpa device

 *				Returns integer: success (0) or error (< 0)

 * @get_config_size:		Get the size of the configuration space includes

 *				fields that are conditional on feature bits.

 *				@vdev: vdpa device
@@ -317,6 +320,7 @@ struct vdpa_config_ops { 
	u8 (*get_status)(struct vdpa_device *vdev);

	void (*set_status)(struct vdpa_device *vdev, u8 status);

	int (*reset)(struct vdpa_device *vdev);

	int (*suspend)(struct vdpa_device *vdev);

	size_t (*get_config_size)(struct vdpa_device *vdev);

	void (*get_config)(struct vdpa_device *vdev, unsigned int offset,

			   void *buf, unsigned int len);