linux-kernel - Re: [PATCH v2 2/6] x86/mm/pat: Add pat

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Message-ID: <20160323085141.GC8031@pd.tnic>
Date:	Wed, 23 Mar 2016 09:51:41 +0100
From:	Borislav Petkov <bp@...e.de>
To:	Toshi Kani <toshi.kani@....com>
Cc:	mingo@...nel.org, hpa@...or.com, tglx@...utronix.de,
	mcgrof@...e.com, jgross@...e.com, paul.gortmaker@...driver.com,
	konrad.wilk@...cle.com, elliott@....com, x86@...nel.org,
	xen-devel@...ts.xenproject.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 2/6] x86/mm/pat: Add pat_disable() interface

On Tue, Mar 22, 2016 at 03:40:45PM -0600, Toshi Kani wrote:
> Will change to "Prevent the OS from initializing the PAT MSR".
> 
> I wanted to clarify that "disable" does not mean to disable PAT MSR.

How do you "disable PAT MSR" ?

I think you're overdocumenting this. pat_disable() is as clear as day
what it does. It doesn't need any commenting...

> I've run checkpatch.pl and thought it was OK to have this warning (instead
> of a >80 warning) since the error message part was not split.  The
> "attempting" part is for debugging and its string is passed from the
> caller. 

We always put the quoted strings on a single line for easier grepping.
Forget the 80-cols rule.

-- 
Regards/Gruss,
    Boris.

SUSE Linux GmbH, GF: Felix Imendörffer, Jane Smithard, Graham Norton, HRB 21284 (AG Nürnberg)
--