V2EX kernel mode

Kernel Mode

释义 Definition

Kernel mode(内核模式):操作系统中一种高特权运行状态,CPU 允许执行受保护的指令并直接访问关键硬件资源与内核内存。通常用于内核本身、设备驱动、部分系统服务等。
(也常与 user mode(用户模式) 对比;用户程序一般在用户模式运行。)

发音 Pronunciation (IPA)

/knl mod/

例句 Examples

The driver runs in kernel mode.
驱动程序在内核模式下运行。

If a bug occurs in kernel mode, it can crash the entire system because it has full access to memory and hardware.
如果在内核模式下发生错误,可能会导致整个系统崩溃,因为它对内存和硬件拥有完全访问权限。

词源 Etymology

kernel 原意是“(果实的)仁、核心”,在计算机领域引申为“操作系统的核心部分(内核)”;mode 表示“模式/状态”。合起来 kernel mode 即“内核所处的运行模式”,强调其比普通应用更高的权限级别。

相关词 Related Words

文学与著作 Literary Works

  • Windows Internals(Russinovich 等):在解释 Windows 架构与内核/用户态边界时频繁使用 “kernel mode”。
  • Modern Operating Systems(Andrew S. Tanenbaum):讨论特权级、内核态与用户态的经典教材。
  • Operating Systems: Three Easy Pieces(Remzi & Andrea Arpaci-Dusseau):在讲解系统调用、保护与隔离时提到内核态(kernel mode)的概念。
  • Linux Kernel Development(Robert Love):介绍 Linux 内核与驱动相关内容时会涉及内核态执行环境。
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