linux/drivers/virt/acrn/mm.c

// SPDX-License-Identifier: GPL-2.0
/*
 * ACRN: Memory mapping management
 *
 * Copyright (C) 2020 Intel Corporation. All rights reserved.
 *
 * Authors:
 *	Fei Li <[email protected]>
 *	Shuo Liu <[email protected]>
 */

#include <linux/io.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include <linux/vmalloc.h>

#include "acrn_drv.h"

static int modify_region(struct acrn_vm *vm, struct vm_memory_region_op *region)
{ … }

/**
 * acrn_mm_region_add() - Set up the EPT mapping of a memory region.
 * @vm:			User VM.
 * @user_gpa:		A GPA of User VM.
 * @service_gpa:	A GPA of Service VM.
 * @size:		Size of the region.
 * @mem_type:		Combination of ACRN_MEM_TYPE_*.
 * @mem_access_right:	Combination of ACRN_MEM_ACCESS_*.
 *
 * Return: 0 on success, <0 on error.
 */
int acrn_mm_region_add(struct acrn_vm *vm, u64 user_gpa, u64 service_gpa,
		       u64 size, u32 mem_type, u32 mem_access_right)
{ … }

/**
 * acrn_mm_region_del() - Del the EPT mapping of a memory region.
 * @vm:		User VM.
 * @user_gpa:	A GPA of the User VM.
 * @size:	Size of the region.
 *
 * Return: 0 on success, <0 for error.
 */
int acrn_mm_region_del(struct acrn_vm *vm, u64 user_gpa, u64 size)
{ … }

int acrn_vm_memseg_map(struct acrn_vm *vm, struct acrn_vm_memmap *memmap)
{ … }

int acrn_vm_memseg_unmap(struct acrn_vm *vm, struct acrn_vm_memmap *memmap)
{ … }

/**
 * acrn_vm_ram_map() - Create a RAM EPT mapping of User VM.
 * @vm:		The User VM pointer
 * @memmap:	Info of the EPT mapping
 *
 * Return: 0 on success, <0 for error.
 */
int acrn_vm_ram_map(struct acrn_vm *vm, struct acrn_vm_memmap *memmap)
{ … }

/**
 * acrn_vm_all_ram_unmap() - Destroy a RAM EPT mapping of User VM.
 * @vm:	The User VM
 */
void acrn_vm_all_ram_unmap(struct acrn_vm *vm)
{ … }