Orange Pi5 kernel

^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  1) .. SPDX-License-Identifier: GPL-2.0
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  2) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  3) ===================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  4) VFIO virtual device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  5) ===================
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  6) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  7) Device types supported:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  8) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300  9)   - KVM_DEV_TYPE_VFIO
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 10) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 11) Only one VFIO instance may be created per VM.  The created device
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 12) tracks VFIO groups in use by the VM and features of those groups
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 13) important to the correctness and acceleration of the VM.  As groups
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 14) are enabled and disabled for use by the VM, KVM should be updated
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 15) about their presence.  When registered with KVM, a reference to the
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 16) VFIO-group is held by KVM.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 17) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 18) Groups:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 19)   KVM_DEV_VFIO_GROUP
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 20) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 21) KVM_DEV_VFIO_GROUP attributes:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 22)   KVM_DEV_VFIO_GROUP_ADD: Add a VFIO group to VFIO-KVM device tracking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 23) 	kvm_device_attr.addr points to an int32_t file descriptor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 24) 	for the VFIO group.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 25)   KVM_DEV_VFIO_GROUP_DEL: Remove a VFIO group from VFIO-KVM device tracking
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 26) 	kvm_device_attr.addr points to an int32_t file descriptor
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 27) 	for the VFIO group.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 28)   KVM_DEV_VFIO_GROUP_SET_SPAPR_TCE: attaches a guest visible TCE table
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 29) 	allocated by sPAPR KVM.
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 30) 	kvm_device_attr.addr points to a struct::
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 31) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 32) 		struct kvm_vfio_spapr_tce {
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 33) 			__s32	groupfd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 34) 			__s32	tablefd;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 35) 		};
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 36) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 37) 	where:
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 38) 
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 39) 	- @groupfd is a file descriptor for a VFIO group;
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 40) 	- @tablefd is a file descriptor for a TCE table allocated via
^8f3ce5b39 (kx 2023-10-28 12:00:06 +0300 41) 	  KVM_CREATE_SPAPR_TCE.