Re: [PATCH 00/24] x86/entry/64: Convert a bunch of ASM entry code into C code

From: Peter Zijlstra
Date: Tue Aug 31 2021 - 16:46:31 EST


On Wed, Sep 01, 2021 at 01:50:01AM +0800, Lai Jiangshan wrote:
> From: Lai Jiangshan <laijs@xxxxxxxxxxxxxxxxx>
>
> Many ASM code in entry_64.S can be rewritten in C if they can be written
> to be non-instrumentable and are called in the right order regarding to
> whether CR3/gsbase is changed to kernel CR3/gsbase.
>
> The patchset covert some of them to C code.

Overall, very nice! There's a lot of details to verify, but I really
like where this ends up.

I'm not sure about moving traps.c, but whatever, that's simple stuff.
I'll try and put some more eyeballs on this later.