linux-kernel - Re: [PATCH 04/19] x86, mpx: Cleanup: Do not pass task around when unnecessary

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Message-ID: <alpine.DEB.2.11.1505191016230.4225@nanos>
Date:	Tue, 19 May 2015 10:16:35 +0200 (CEST)
From:	Thomas Gleixner <tglx@...utronix.de>
To:	Dave Hansen <dave@...1.net>
cc:	linux-kernel@...r.kernel.org, x86@...nel.org,
	dave.hansen@...ux.intel.com, oleg@...hat.com, bp@...en8.de
Subject: Re: [PATCH 04/19] x86, mpx: Cleanup: Do not pass task around when
 unnecessary

On Mon, 18 May 2015, Dave Hansen wrote:
> From: Dave Hansen <dave.hansen@...ux.intel.com>
> 
> The MPX code can only work on the current task.  You can not, for
> instance, enable MPX management in another process or thread.
> You can also not handle a fault for another process or thread.
> 
> Despite this, we pass a task_struct around prolifically.  This
> patch removes all of the task struct passing for code paths where
> the code can not deal with another task (which turns out to be
> all of them).
> 
> This has no functional changes.  It's just a cleanup.
> 
> Signed-off-by: Dave Hansen <dave.hansen@...ux.intel.com>

Reviewed-by: Thomas Gleixner <tglx@...utronix.de>
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