From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail190.messagelabs.com (mail190.messagelabs.com [216.82.249.51]) by kanga.kvack.org (Postfix) with SMTP id 4A0498D0039 for ; Tue, 8 Mar 2011 19:33:40 -0500 (EST) From: Stephen Wilson Subject: [PATCH 1/5] x86: add context tag to mark mm when running a task in 32-bit compatibility mode Date: Tue, 8 Mar 2011 19:31:57 -0500 Message-Id: <1299630721-4337-2-git-send-email-wilsons@start.ca> In-Reply-To: <1299630721-4337-1-git-send-email-wilsons@start.ca> References: <1299630721-4337-1-git-send-email-wilsons@start.ca> Sender: owner-linux-mm@kvack.org List-ID: To: x86@kernel.org Cc: Thomas Gleixner , Ingo Molnar , "H. Peter Anvin" , Benjamin Herrenschmidt , Paul Mackerras , Martin Schwidefsky , Heiko Carstens , linux390@de.ibm.com, Paul Mundt , Andi Kleen , Michel Lespinasse , Andrew Morton , Alexander Viro , linuxppc-dev@lists.ozlabs.org, linux-s390@vger.kernel.org, linux-sh@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Stephen Wilson This tag is intended to mirror the thread info TIF_IA32 flag. Will be used to identify mm's which support 32 bit tasks running in compatibility mode without requiring a reference to the task itself. Signed-off-by: Stephen Wilson --- arch/x86/include/asm/mmu.h | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/arch/x86/include/asm/mmu.h b/arch/x86/include/asm/mmu.h index 80a1dee..8a2e5b4 100644 --- a/arch/x86/include/asm/mmu.h +++ b/arch/x86/include/asm/mmu.h @@ -13,6 +13,12 @@ typedef struct { int size; struct mutex lock; void *vdso; + +#ifdef CONFIG_X86_64 + /* True if mm supports a task running in 32 bit compatibility mode. */ + unsigned short compat; +#endif + } mm_context_t; #ifdef CONFIG_SMP -- 1.7.3.5 -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Fight unfair telecom internet charges in Canada: sign http://stopthemeter.ca/ Don't email: email@kvack.org