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Message-ID: <20150106212255.GV2915@two.firstfloor.org>
Date:	Tue, 6 Jan 2015 22:22:55 +0100
From:	Andi Kleen <andi@...stfloor.org>
To:	Andy Lutomirski <luto@...capital.net>
Cc:	Andi Kleen <andi@...stfloor.org>,
	Dave Hansen <dave.hansen@...ux.intel.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	X86 ML <x86@...nel.org>, Thomas Gleixner <tglx@...utronix.de>,
	ilya.enkovich@...el.com
Subject: Re: [PATCH 3.19 3/3] x86, mpx: Change the MPX enable/disable API
 to arch_prctl

> Given that it doesn't seen to have been committed yet, I'm not too
> worried about compatibility.  And "prctl (43)" doesn't actually seem a
> whole lot better than "syscall(SYS_arch_prctl, ARCH_ENABLE_MPX, 0)"

This would actually fail with the EINVAL change you requested.

> (preprocessor macros ftw!).  But I don't feel that strongly about this
> point.

-Andi
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