linux-kernel - Re: [PATCH v3 0/2] x86, mtrr: fixs for mtrr

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Message-ID: <51C08B01.40200@zytor.com>
Date:	Tue, 18 Jun 2013 11:29:53 -0500
From:	"H. Peter Anvin" <hpa@...or.com>
To:	Yinghai Lu <yinghai@...nel.org>
CC:	Andrew Morton <akpm@...ux-foundation.org>,
	Thomas Gleixner <tglx@...utronix.de>,
	Ingo Molnar <mingo@...e.hu>,
	Joshua Covington <joshuacov@...glemail.com>,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 0/2] x86, mtrr: fixs for mtrr_cleanup

On 06/13/2013 03:17 PM, Yinghai Lu wrote:
> Joshua reported: Commit cd7b304dfaf1 (x86, range: fix missing merge
> during add range) broke mtrr cleanup on his setup in 3.9.5.
> corresponding commit in upstream is fbe06b7bae7c.
> 
>   *BAD*gran_size: 64K chunk_size: 16M num_reg: 6 lose cover RAM: -0G
> 
> https://bugzilla.kernel.org/show_bug.cgi?id=59491
> 
> Fix it from two places, so late mtrr cleanup side and range add side.
> 
>   x86, mtrr: Fix original mtrr range get for mtrr_cleanup
>   range: Do not add new blank slot with add_range_with_merge
> 
> Please apply them for v3.10.
> 

On this subject: what do we need to happen to be able to dump the MTRR
cleanup stuff?

	-hpa


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