linux-kernel - Re: [PATCH] UPROBES: Remove useless _

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Message-ID: <52587681.8090703@gmail.com>
Date:	Fri, 11 Oct 2013 15:06:57 -0700
From:	David Daney <ddaney.cavm@...il.com>
To:	Ralf Baechle <ralf@...ux-mips.org>
CC:	Srikar Dronamraju <srikar@...ux.vnet.ibm.com>,
	Oleg Nesterov <oleg@...hat.com>,
	Anton Arapov <anton@...hat.com>,
	Ananth N Mavinakayanahalli <ananth@...ibm.com>,
	linux-kernel@...r.kernel.org, linux-mips@...ux-mips.org
Subject: Re: [PATCH] UPROBES: Remove useless __weak attribute

On 10/11/2013 05:24 AM, Ralf Baechle wrote:
> On Fri, Oct 11, 2013 at 06:21:28AM +0530, Srikar Dronamraju wrote:
>
>> Will be nice to have another arch(mips) support for uprobes.
>
> It's basically ready to be merged - but it's triggering issues elsewhere
> in the kernel which I have to resolve first.
>
> The short version is that the memory special mapping created by uprobe
> with VM_EXEC but not VM_READ permissions is not working but it's working
> if I add VM_READ.  That should not be necessary so something deep down
> in the guts of arch/mips is wrong.
>

Weird, I have a testcase that explicitly tests VM_EXEC and !VM_READ that 
works.

Do you have more information about the failure, I can look at it in the 
simulator and see where it goes wrong.

Thanks,
David Daney

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