linux-kernel - Re: [PATCH] X86: MM: Add PAT Type write-through in combination with mtrr

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Message-ID: <20131028104458.GE4314@pd.tnic>
Date:	Mon, 28 Oct 2013 11:44:58 +0100
From:	Borislav Petkov <bp@...en8.de>
To:	Ingo Molnar <mingo@...nel.org>
Cc:	Andreas Werner <wernerandy@....de>, tglx@...utronix.de,
	mingo@...hat.com, hpa@...or.com, x86@...nel.org,
	dave@...ux.vnet.ibm.com, linux-kernel@...r.kernel.org
Subject: Re: [PATCH] X86: MM: Add PAT Type write-through in combination with
 mtrr

On Mon, Oct 28, 2013 at 11:31:32AM +0100, Ingo Molnar wrote:
> The CLFLUSH is done afterwards (making it a use-once thing), so WB
> might still be faster and would avoid the PAT headache ...

Absolutely, that's why there's no need for a WT buffer at all, methinks.

-- 
Regards/Gruss,
    Boris.

Sent from a fat crate under my desk. Formatting is fine.
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