runtime kernel patching 动态内核补丁
If there is enough space in the heap to satisfy a memory request, it can be handled by the language runtime without kernel involvement.
当堆的空间能够满足程序的内存请求时，那么请求的处理过程就可以直接由语言运行时来负责，而不必有系统内核参与。
It focuses on scalability and response time improvements, looking to enhance interfaces across vertical component and system stacks (e.g. runtime, kernel, OS, hyperviser).
它关注可伸缩性和响应时间的改进，旨在增强垂直组件和系统堆栈（比如运行时、内核、OS及管理程序）的接口。
It's unclear why they made this change; possibly they found that most drivers didn't use the features of Objective-C, or possibly they just wanted to move the Objective-C runtime out of the kernel.
我们不清楚他们为什么做出这样的改变，可能是因为他们发现大部分驱动用不到Objective - c的特性，也可能仅仅是因为他们不想让Objective - C在内核上运行。
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