Re: [PATCH V2] MIPS: CPU#0 is not hotpluggable

在 2020/7/26 下午4:25, Thomas Bogendoerfer 写道:

On Sat, Jul 25, 2020 at 02:37:52PM +0800, Huacai Chen wrote:

...

Hi, Thomas,

What do you think about this patch? Other archs also do the same thing except those support hotplug CPU#0.

I'm ok with the patch, I'm just wondering if this is a hardware or software limitation. If it's the latter, what needs to be done to support it ?

It should be a software limitation, x86 have already deal with that [1]. But there is no reason to spend extra effort on CPU0 hotplug. I don't think any user is expecting this feature.

Thanks.

[1]: https://events.static.linuxfound.org/sites/events/files/lcjpcojp13_fenghua.p...

- Jiaxun

Thomas.