From mboxrd@z Thu Jan  1 00:00:00 1970
From: "H. Peter Anvin" <hpa@zytor.com>
Subject: Re: Compat 32-bit syscall entry from 64-bit task!?
Date: Fri, 10 Feb 2012 07:53:09 -0800
Message-ID: <4F353D65.7070705@zytor.com>
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Cc: "H.J. Lu" <hjl.tools@gmail.com>,
	Linus Torvalds <torvalds@linux-foundation.org>,
	Andi Kleen <andi@firstfloor.org>,
	Jamie Lokier <jamie@shareable.org>,
	Andrew Lutomirski <luto@mit.edu>,
	Oleg Nesterov <oleg@redhat.com>,
	Will Drewry <wad@chromium.org>, linux-kernel@vger.kernel.org,
	keescook@chromium.org, john.johansen@canonical.com,
	serge.hallyn@canonical.com, coreyb@linux.vnet.ibm.com,
	pmoore@redhat.com, eparis@redhat.com, djm@mindrot.org,
	segoon@openwall.com, rostedt@goodmis.org, jmorris@namei.org,
	scarybeasts@gmail.com, avi@redhat.com, penberg@cs.helsinki.fi,
	viro@zeniv.linux.org.uk, mingo@elte.hu, akpm@linux-foundation.org,
	khilman@ti.com, borislav.petkov@amd.com, amwang@redhat.com,
	ak@linux.intel.com, eric.dumazet@gmail.com, gregkh@suse.de,
	dhowells@redhat.com, daniel.lezcano@free.fr,
	linux-fsdevel@vger.kernel.org,
	linux-security-module@vger.kernel.org, olofj@chrom
To: Indan Zupancic <indan@nul.nu>
Return-path: <linux-security-module-owner@vger.kernel.org>
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On 02/09/2012 11:42 PM, Indan Zupancic wrote:>
> Patch implementing this below. It uses bit 3 for task mode and bit 5
> for syscall mode. Those bits are only valid if VIF is set. It increases
> the kernel size by around 50 bytes, 6 for a 32-bit kernel.
>
> Any objections?

#include <stdnak.h>

	-hpa