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// SPDX-License-Identifier: GPL-2.0
/*
* ACRN_HSM: Virtual Machine management
*
* Copyright (C) 2020 Intel Corporation. All rights reserved.
*
* Authors:
* Jason Chen CJ <jason.cj.chen@intel.com>
* Yakui Zhao <yakui.zhao@intel.com>
*/
#include <linux/io.h>
#include <linux/mm.h>
#include <linux/slab.h>
#include "acrn_drv.h"
/* List of VMs */
static LIST_HEAD(acrn_vm_list);
/* To protect acrn_vm_list */
static DEFINE_MUTEX(acrn_vm_list_lock);
struct acrn_vm *acrn_vm_create(struct acrn_vm *vm,
struct acrn_vm_creation *vm_param)
{
int ret;
ret = hcall_create_vm(virt_to_phys(vm_param));
if (ret < 0 || vm_param->vmid == ACRN_INVALID_VMID) {
dev_err(acrn_dev.this_device,
"Failed to create VM! Error: %d\n", ret);
return NULL;
}
vm->vmid = vm_param->vmid;
vm->vcpu_num = vm_param->vcpu_num;
mutex_lock(&acrn_vm_list_lock);
list_add(&vm->list, &acrn_vm_list);
mutex_unlock(&acrn_vm_list_lock);
dev_dbg(acrn_dev.this_device, "VM %u created.\n", vm->vmid);
return vm;
}
int acrn_vm_destroy(struct acrn_vm *vm)
{
int ret;
if (vm->vmid == ACRN_INVALID_VMID ||
test_and_set_bit(ACRN_VM_FLAG_DESTROYED, &vm->flags))
return 0;
/* Remove from global VM list */
mutex_lock(&acrn_vm_list_lock);
list_del_init(&vm->list);
mutex_unlock(&acrn_vm_list_lock);
ret = hcall_destroy_vm(vm->vmid);
if (ret < 0) {
dev_err(acrn_dev.this_device,
"Failed to destroy VM %u\n", vm->vmid);
clear_bit(ACRN_VM_FLAG_DESTROYED, &vm->flags);
return ret;
}
dev_dbg(acrn_dev.this_device, "VM %u destroyed.\n", vm->vmid);
vm->vmid = ACRN_INVALID_VMID;
return 0;
}
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