Re: [PATCH] mm/hotplug: Only respect mem= parameter during boot stage

Michal Hocko
2019-12-10T13:32:07Z

On Tue 10-12-19 20:55:57, Baoquan He wrote:
[...]
> Btw, as you said at above, I am confused by the '[KNL,BOOT]', what does
> the 'BOOT' mean in the documentation of 'mem='? I checked all parameters
> with 'BOOT', still don't get it clearly.

This is a good question indeed. I have checked closer and this is what
documentation says
Documentation/admin-guide/kernel-parameters.rst
"
BOOT Is a boot loader parameter.

Parameters denoted with BOOT are actually interpreted by the boot
loader, and have no meaning to the kernel directly.
"

and that really doesn't fit, right? So I went to check the full history
git tree just to get to 2.4.0-test5 and no explanation whatsoever.
Fun, isn't it? ;)
--
Michal Hocko
SUSE Labs