linux-kernel - Re: [PATCH v4 7/7] mtrr, mm, x86: Enhance MTRR checks for KVA huge page mapping

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Message-ID: <20150512072809.GA3497@pd.tnic>
Date:	Tue, 12 May 2015 09:28:09 +0200
From:	Borislav Petkov <bp@...en8.de>
To:	Toshi Kani <toshi.kani@...com>
Cc:	akpm@...ux-foundation.org, hpa@...or.com, tglx@...utronix.de,
	mingo@...hat.com, linux-mm@...ck.org, x86@...nel.org,
	linux-kernel@...r.kernel.org, dave.hansen@...el.com,
	Elliott@...com, pebolle@...cali.nl
Subject: Re: [PATCH v4 7/7] mtrr, mm, x86: Enhance MTRR checks for KVA huge
 page mapping

On Mon, May 11, 2015 at 04:09:39PM -0600, Toshi Kani wrote:
> There may not be any type conflict with MTRR_TYPE_INVALID.

Because...?

Let me guess: you cannot change this function to return a signed value
which is the type when positive and an error when negative?

> I will change the caller to check MTRR_TYPE_INVALID, and treat it as a
> uniform case.

That would be, of course, also wrong.

-- 
Regards/Gruss,
    Boris.

ECO tip #101: Trim your mails when you reply.
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