From: Stephen Wilson <wilsons@start.ca>
To: Thomas Gleixner <tglx@linutronix.de>,
Ingo Molnar <mingo@redhat.com>, "H. Peter Anvin" <hpa@zytor.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
Alexander Viro <viro@zeniv.linux.org.uk>,
Michel Lespinasse <walken@google.com>,
Andi Kleen <ak@linux.intel.com>, Rik van Riel <riel@redhat.com>,
KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>,
Matt Mackall <mpm@selenic.com>,
David Rientjes <rientjes@google.com>,
Nick Piggin <npiggin@kernel.dk>,
Andrea Arcangeli <aarcange@redhat.com>,
Mel Gorman <mel@csn.ul.ie>, Hugh Dickins <hughd@google.com>,
x86@kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org,
Stephen Wilson <wilsons@start.ca>
Subject: [PATCH v2 resend 01/12] x86: add context tag to mark mm when running a task in 32-bit compatibility mode
Date: Wed, 23 Mar 2011 10:43:50 -0400 [thread overview]
Message-ID: <1300891441-16280-2-git-send-email-wilsons@start.ca> (raw)
In-Reply-To: <1300891441-16280-1-git-send-email-wilsons@start.ca>
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 <wilsons@start.ca>
Reviewed-by: Michel Lespinasse <walken@google.com>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: "H. Peter Anvin" <hpa@zytor.com>
---
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..aeff3e8 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 ia32_compat;
+#endif
+
} mm_context_t;
#ifdef CONFIG_SMP
--
1.7.3.5
--
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next prev parent reply other threads:[~2011-03-23 14:46 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-23 14:43 [PATCH v2 resend 0/12] enable writing to /proc/pid/mem Stephen Wilson
2011-03-23 14:43 ` Stephen Wilson [this message]
2011-03-23 14:43 ` [PATCH v2 resend 02/12] x86: mark associated mm when running a task in 32 bit compatibility mode Stephen Wilson
2011-03-23 14:43 ` [PATCH v2 resend 03/12] mm: arch: make get_gate_vma take an mm_struct instead of a task_struct Stephen Wilson
2011-03-23 14:43 ` [PATCH v2 resend 04/12] mm: arch: make in_gate_area " Stephen Wilson
2011-03-23 14:43 ` [PATCH v2 resend 05/12] mm: arch: rename in_gate_area_no_task to in_gate_area_no_mm Stephen Wilson
2011-03-23 14:43 ` [PATCH v2 resend 06/12] mm: use mm_struct to resolve gate vma's in __get_user_pages Stephen Wilson
2011-03-23 14:43 ` [PATCH v2 resend 07/12] mm: factor out main logic of access_process_vm Stephen Wilson
2011-03-23 14:43 ` [PATCH v2 resend 08/12] mm: implement access_remote_vm Stephen Wilson
2011-03-23 14:43 ` [PATCH v2 resend 09/12] proc: disable mem_write after exec Stephen Wilson
2011-03-23 14:43 ` [PATCH v2 resend 10/12] proc: hold cred_guard_mutex in check_mem_permission() Stephen Wilson
2011-03-23 14:44 ` [PATCH v2 resend 11/12] proc: make check_mem_permission() return an mm_struct on success Stephen Wilson
2011-03-23 14:44 ` [PATCH v2 resend 12/12] proc: enable writing to /proc/pid/mem Stephen Wilson
2011-03-23 14:57 ` [PATCH v2 resend 0/12] " Al Viro
2011-03-23 15:04 ` Stephen Wilson
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