Message-ID: <4FDA55A6.2030706@redhat.com>
Date: Thu, 14 Jun 2012 17:20:38 -0400
From: Rik van Riel <riel@redhat.com>
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:12.0) Gecko/20120430 Thunderbird/12.0.1
MIME-Version: 1.0
To: "H. Peter Anvin" <hpa@linux.intel.com>
CC: Borislav Petkov <bp@amd64.org>, linux-mm@kvack.org,
        linux-kernel@vger.kernel.org, akpm@linux-foundation.org,
        sjhill@mips.com, ralf@linux-mips.org,
        Rob Herring <rob.herring@calxeda.com>,
        Russell King <rmk+kernel@arm.linux.org.uk>,
        Nicolas Pitre <nico@linaro.org>
Subject: Re: bugs in page colouring code
References: <20120613152936.363396d5@cuia.bos.redhat.com> <20120614103627.GA25940@aftab.osrc.amd.com> <4FD9DFCE.1070609@redhat.com> <4FDA5087.7090606@linux.intel.com> <4FDA519F.4080204@redhat.com> <4FDA5413.9080400@linux.intel.com>
In-Reply-To: <4FDA5413.9080400@linux.intel.com>
Content-Type: text/plain; charset=UTF-8; format=flowed
Content-Transfer-Encoding: 7bit
Sender: linux-kernel-owner@vger.kernel.org
Content-Length: 703
Lines: 17

On 06/14/2012 05:13 PM, H. Peter Anvin wrote:

> I am much more skeptical to disabling page coloring in the !PF_RANDOMIZE
> case when no address hint is proposed.  I would like to at least try
> running without it, perhaps with a chicken bit in a sysctl.

Agreed, it is hard to imagine a program that passes
address 0 to mmap, yet breaks when it gets a coloured
page address back...

I'll leave that bit of code untouched for now, we can
play with it later.
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/