linux-kernel - Re: [PATCH 12/19] x86: make is_64bit

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <alpine.DEB.2.11.1505182305220.4225@nanos>
Date:	Mon, 18 May 2015 23:06:14 +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
Subject: Re: [PATCH 12/19] x86: make is_64bit_mm() widely available

On Fri, 8 May 2015, Dave Hansen wrote:
> The uprobes code has a nice helper, is_64bit_mm(), that consults both
> the runtime and compile-time flags for 32-bit support.  Instead of
> reinventing the wheel, pull it in to an x86 header so we can use it
> for MPX.
> 
> I prefer passing the mm around to test_thread_flag(TIF_IA32) because
> it makes it explicit where the context is coming from. 

Ack.

> It will also make it easier if we ever need to access the MPX
> structures from another process.

Do we really want to go there?

Otherwise: Reviewed-by: Thomas Gleixner <tglx@...utronix.de>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/