linux-zen-desktop/Documentation/translations/zh_CN/virt/acrn/cpuid.rst

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.. SPDX-License-Identifier: GPL-2.0
.. include:: ../../disclaimer-zh_CN.rst
:Original: Documentation/virt/acrn/cpuid.rst
:翻译:
司延腾 Yanteng Si <siyanteng@loongson.cn>
:校译:
时奎亮 Alex Shi <alexs@kernel.org>
.. _cn_virt_acrn_cpuid:
==============
ACRN CPUID位域
==============
在ACRN超级管理器上运行的客户虚拟机可以使用CPUID检查其一些功能。
ACRN的cpuid函数是:
函数: 0x40000000
返回::
eax = 0x40000010
ebx = 0x4e524341
ecx = 0x4e524341
edx = 0x4e524341
注意ebxecx和edx中的这个值对应于字符串“ACRNACRNACRN”。eax中的值对应于这个叶子
中存在的最大cpuid函数如果将来有更多的函数加入将被更新。
函数: define ACRN_CPUID_FEATURES (0x40000001)
返回::
ebx, ecx, edx
eax = an OR'ed group of (1 << flag)
其中 ``flag`` 的定义如下:
================================= =========== ================================
标志 值 描述
================================= =========== ================================
ACRN_FEATURE_PRIVILEGED_VM 0 客户虚拟机是一个有特权的虚拟机
================================= =========== ================================
函数: 0x40000010
返回::
ebx, ecx, edx
eax = (Virtual) TSC frequency in kHz.