linux-kernel - Re: [PATCH v2] X86: MM: Add PAT Type write-through in combination with mtrr

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Message-ID: <52768B8E.1060902@zytor.com>
Date:	Sun, 03 Nov 2013 09:44:46 -0800
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Andreas Werner <wernerandy@....de>, tglx@...utronix.de
CC:	mingo@...hat.com, x86@...nel.org, linux-kernel@...r.kernel.org,
	bp@...en8.de
Subject: Re: [PATCH v2] X86: MM: Add PAT Type write-through in combination
 with mtrr

On 11/03/2013 04:02 AM, Andreas Werner wrote:
> 
> Since marking IO Memory as cachable is not valid, WT is the
> best way for caching/bursting on MMIO Devices.
> 

Uh... WT *is* cachable...

	-hpa


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