assembly - 多核处理器如何启动？

Question

从非常低的层面来说，核心是如何初始化的？

Answer 1

你可以在 Intel specification 中查看所有血淋淋的细节。 。血淋淋的细节在第 8.1 章中。

以下是摘录:

Following power-up or an assertion ofthe RESET# pin, each processor on thesystem bus performs a hardwareinitialization of the processor (knownas a hardware reset) and an optionalbuilt-in self-test (BIST). [snip] Atthis point, the action taken dependson the processor family:

• P6 family processors—All the processors on thesystem bus (including a singleprocessor in a uniprocessor system)execute the multiple processor (MP)initialization protocol across theAPIC bus. The processor that isselected through this protocol as thebootstrap processor (BSP) thenimmediately starts executingsoftware-initialization code in thecurrent code segment beginning at theoffset in the EIP register.