Unfortunately, the memory protection mechanisms of the x86 processors (the most common processors) don't easily support this; normally if a page is readable, it's executable.
遗憾的是，x86处理器(最常见的处理器)的内存保护机制无法容易地支持这点；通常，如果一个内存页是可读的，它就是可执行的。
The addressed page is not present in memory, the corresponding page Table entry is null, or a violation of the paging protection mechanism has occurred.
寻址的页不在内存中，对应的页表条目是空的，或者是违背了页式管理的保护机制。
The addressed page is not present in memory, the corresponding page Table entry is null, or a violation of the paging protection mechanism has occurred.
寻址的页不在内存中，对应的页表条目是空的，或者是违背了页式管理的保护机制。
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