linux-kernel - Re: [GIT PULL] x86: remove Intel MPX

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Message-ID: <ccb2154a-009a-9095-aa0c-9e72836ee0e0@intel.com>
Date:   Wed, 5 Dec 2018 10:50:33 -0800
From:   Dave Hansen <dave.hansen@...el.com>
To:     Konrad Rzeszutek Wilk <konrad.wilk@...cle.com>
Cc:     the arch/x86 maintainers <x86@...nel.org>,
        LKML <linux-kernel@...r.kernel.org>,
        Sebastian Andrzej Siewior <bigeasy@...utronix.de>,
        Andy Lutomirski <luto@...nel.org>,
        Peter Zijlstra <peterz@...radead.org>
Subject: Re: [GIT PULL] x86: remove Intel MPX

On 12/5/18 10:42 AM, Konrad Rzeszutek Wilk wrote:
> On Wed, Dec 05, 2018 at 08:44:43AM -0800, Dave Hansen wrote:
>> Hi x86 maintainers,
>>
>> Please pull from:
>>
>>  	git://git.kernel.org/pub/scm/linux/kernel/git/daveh/x86-mpx.git mpx-remove
>>
>> There is only one commit, removing the Intel MPX implementation from the
>> tree.  The benefits of keeping the feature in the tree are not worth the
>> ongoing maintenance cost.
> Is there an replacement or another way to use this feature?

There is no replacement for using the hardware.

Similar functionality is available through software-only means like
AddressSanitizer, though.