linux-kernel - Re: [PATCH v4 1/8] x86/sev: Prepare for using the RMPREAD instruction to access the RMP

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Message-ID: <20241025135527.GCZxujT_ffqa2fHoAa@fat_crate.local>
Date: Fri, 25 Oct 2024 15:55:27 +0200
From: Borislav Petkov <bp@...en8.de>
To: Tom Lendacky <thomas.lendacky@....com>
Cc: linux-kernel@...r.kernel.org, x86@...nel.org,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...hat.com>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	Michael Roth <michael.roth@....com>,
	Ashish Kalra <ashish.kalra@....com>,
	Nikunj A Dadhania <nikunj@....com>,
	Neeraj Upadhyay <Neeraj.Upadhyay@....com>
Subject: Re: [PATCH v4 1/8] x86/sev: Prepare for using the RMPREAD
 instruction to access the RMP

On Fri, Oct 25, 2024 at 08:47:06AM -0500, Tom Lendacky wrote:
> Just wanted to show you what it looks like. There still is a lot of change
> because of the new argument and using a structure now instead of the
> direct entry.

Ah ok.

> I can change back and maybe add some more detail above the struct names if
> that suffices.

Yeah, I think "struct rmpread" is simply a strange thing to have when there is
an instruction of that name. I think the naming of the structs should aim at
being descriptive as to what they are. Hypothetical example:

struct rmpentry_as_found_in_the_rmptable ...

struct rmpentry_as_returned_by_rmpread

Now make the above shorter by keeping the information. :-)

IOW, on the one hand, "rmpentry_raw" or "rmpentry_direct" or
"rmpentry_<something>", and, OTOH, just "struct rmpentry" kinda makes sense
and it is short enough.

At least how I see it rn...

Thx.

-- 
Regards/Gruss,
    Boris.

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