drm/amdgpu: Add userptr support for KFD

#include <linux/types.h>

#include <linux/mm.h>

#include <linux/mmu_context.h>

#include <linux/workqueue.h>

#include <kgd_kfd_interface.h>

#include <drm/ttm/ttm_execbuf_util.h>

#include "amdgpu_sync.h"

	uint32_t mapping_flags;

	atomic_t invalid;

	struct amdkfd_process_info *process_info;

	struct page **user_pages;

	struct amdgpu_sync sync;

	struct list_head vm_list_head;

	/* List head for all KFD BOs that belong to a KFD process. */

	struct list_head kfd_bo_list;

	/* List of userptr BOs that are valid or invalid */

	struct list_head userptr_valid_list;

	struct list_head userptr_inval_list;

	/* Lock to protect kfd_bo_list */

	struct mutex lock;

	unsigned int n_vms;

	/* Eviction Fence */

	struct amdgpu_amdkfd_fence *eviction_fence;

	/* MMU-notifier related fields */

	atomic_t evicted_bos;

	struct delayed_work restore_userptr_work;

	struct pid *pid;

};

int amdgpu_amdkfd_init(void);