对不同操作系统的使用和需求促使它们引入线程安全性,并阻止对BIOS或硬件的直接访问。
With the usage and demand for different operating systems, made them to introduce the thread security and prevented direct access to the BIOS or Hardware.
访客操作系统使用虚拟机监视程序(VMM)提供的API与hypervisor通信,从而直接访问底层硬件上的某些资源。
The guest operating system USES APIs, provided by virtual machine monitor (VMM), to communicate with the hypervisor to directly access certain resources on the underlying hardware.
应用程序已经不可能绕过现代的操作系统直接访问硬件,一种更普遍的说法就是应用程序以用户态(usermode)运行。
An application cannot bypass the OS and access hardware resources directly. It is commonly said that applications run in user mode.
在用户态,代码不具备直接访问硬件或者访问内存的能力,而必须借助操作系统提供的可靠的、底层的API来访问硬件或者内存。
In user mode, the executing code has no ability to directly access hardware or reference memory. Code running in user mode must delegate to system APIs to access hardware or memory.
在用户态,代码不具备直接访问硬件或者访问内存的能力,而必须借助操作系统提供的可靠的、底层的API来访问硬件或者内存。
In user mode, the executing code has no ability to directly access hardware or reference memory. Code running in user mode must delegate to system APIs to access hardware or memory.
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