Re: [PATCH v7 04/12] x86/cpufeatures: Add TDX Guest CPU feature

From: Borislav Petkov
Date: Thu Sep 23 2021 - 10:17:00 EST


On Thu, Sep 23, 2021 at 07:10:00AM -0700, Kuppuswamy, Sathyanarayanan wrote:
> Initially, tdx_early_init() was added between kasan_early_init() and
> idt_setup_early_handler() in x86_64_start_kernel(). But I found that
> we have requirement to parse command line params in future
> changes to tdx_early_init() (not from the patches in this series). Since
> command line pointer is getting initialized in copy_bootdata(), I want
> move the tdx_early_init() call below it. Instead of moving the initialization
> order in future, I thought to move it appropriate place in the initial
> patch. Regarding IDT dependency, #VE handling will have a dependency on
> it (so it is better to initialize it before tdx_early_init()).

Then in your next version, pls add a comment that goes like this:

/*
* This call needs to be here because...
* <insert reasons>
*/

So that it is clear that its placement is special.

--
Regards/Gruss,
Boris.

https://people.kernel.org/tglx/notes-about-netiquette