linux-kernel - Re: bugs in page colouring code

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Message-ID: <4FDA519F.4080204@redhat.com>
Date:	Thu, 14 Jun 2012 17:03:27 -0400
From:	Rik van Riel <riel@...hat.com>
To:	"H. Peter Anvin" <hpa@...ux.intel.com>
CC:	Borislav Petkov <bp@...64.org>, linux-mm@...ck.org,
	linux-kernel@...r.kernel.org, akpm@...ux-foundation.org,
	sjhill@...s.com, ralf@...ux-mips.org,
	Rob Herring <rob.herring@...xeda.com>,
	Russell King <rmk+kernel@....linux.org.uk>,
	Nicolas Pitre <nico@...aro.org>
Subject: Re: bugs in page colouring code

On 06/14/2012 04:58 PM, H. Peter Anvin wrote:
> On 06/14/2012 05:57 AM, Rik van Riel wrote:
>>
>> However, I expect that on x86 many applications expect
>> MAP_FIXED to just work, and enforcing that would be
>> more trouble than it's worth.
>>
>
> MAP_FIXED, is well, fixed.  It means that performance be screwed, if we
> can fulfill the request we MUST do so.

My codebase now has a separate arch_align_addr function
for x86, which is surprisingly similar to the generic
one :)
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