什么是TLB击落? [英] What is TLB shootdown?

问题描述

什么是SMP中的TLB击落?

What is a TLB shootdown in SMPs?

我找不到有关此概念的太多信息.任何很好的例子将不胜感激.

I am unable to find much information regarding this concept. Any good example would be very much appreciated.

推荐答案

一个简单的例子:

1. 您的系统中所有处理器共享一些内存.

1. You have some memory shared by all of the processors in your system.

您的处理器之一限制了对该共享内存页面的访问.

One of your processors restricts access to a page of that shared memory.

现在，所有处理器都必须刷新其TLB，以使被允许访问该页面的处理器不再能这样做.

Now, all of the processors have to flush their TLBs, so that the ones that were allowed to access that page can't do so any more.

一个处理器导致在其他处理器上刷新TLB的动作就是所谓的TLB击倒.

The actions of one processor causing the TLBs to be flushed on other processors is what is called a TLB shootdown.

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