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