linux-kernel - Re: [PATCHv2 3/4] staging: tidspbridge - remove disabling twl when printing DSP stack

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Message-ID: <AANLkTimOoL6OL4ft1c=U4p7HzvoSNg7n3BT0TJQdFL63@mail.gmail.com>
Date:	Fri, 10 Dec 2010 17:43:42 +0200
From:	Felipe Contreras <felipe.contreras@...il.com>
To:	Fernando Guzman Lugo <fernando.lugo@...com>
Cc:	omar.ramirez@...com, linux-kernel@...r.kernel.org, nm@...com,
	ohad@...ery.com
Subject: Re: [PATCHv2 3/4] staging: tidspbridge - remove disabling twl when
 printing DSP stack

On Fri, Dec 10, 2010 at 5:55 AM, Fernando Guzman Lugo
<fernando.lugo@...com> wrote:
> Now the SHM segments are not in lock tlbs, instead
> they are in translation tables. So we cannot disable
> twl in order to get the DSP stack dump. Also add a check
> for __get_free_page allocation.

Why?

This means there's a possibility that there will be lingering entries
in the translation tables, and that the DSP side would be able to
corrupt kernel memory.

-- 
Felipe Contreras
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