linux-kernel - Re: [PATCH 07/19] x86, mpx: boot-time disable

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Message-ID: <alpine.DEB.2.11.1505182245280.4225@nanos>
Date:	Mon, 18 May 2015 22:45:56 +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
Subject: Re: [PATCH 07/19] x86, mpx: boot-time disable

On Fri, 8 May 2015, Dave Hansen wrote:
> MPX has the _potential_ to cause some issues.  Say part of your init
> system tried to protect one of its components from buffer overflows
> with MPX.  If there were a false positive, it's possible that MPX
> could keep a system from booting.
> 
> MPX could also potentially cause performance issues since it is
> present in hot paths like the unmap path.
> 
> Allow it to be disabled at boot time.
> 
> Signed-off-by: Dave Hansen <dave.hansen@...ux.intel.com>

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