From: Peter Zijlstra <a.p.zijlstra@chello.nl>
To: linux-kernel@vger.kernel.org,
parisc-linux@lists.parisc-linux.org, linux-mm@kvack.org,
linux-arch@vger.kernel.org
Cc: Ollie Wild <aaw@google.com>,
Peter Zijlstra <a.p.zijlstra@chello.nl>,
Andrew Morton <akpm@osdl.org>, Ingo Molnar <mingo@elte.hu>,
Andi Kleen <ak@suse.de>
Subject: [patch 1/3] arch: personality independent stack top
Date: Wed, 13 Jun 2007 12:03:35 +0200 [thread overview]
Message-ID: <20070613100834.794082281@chello.nl> (raw)
In-Reply-To: <20070613100334.635756997@chello.nl>
[-- Attachment #1: stack_top_max.patch --]
[-- Type: text/plain, Size: 11650 bytes --]
New arch macro STACK_TOP_MAX it gives the larges valid stack address for
the architecture in question.
It differs from STACK_TOP in that it will not distinguish between personalities
but will always return the largest possible address.
This is used to create the initial stack on execve, which we will move down
to the proper location once the binfmt code has figured out where that is.
Signed-off-by: Peter Zijlstra <a.p.zijlstra@chello.nl>
Signed-off-by: Ollie Wild <aaw@google.com>
---
Changes
- small fix to UML
include/asm-alpha/a.out.h | 2 ++
include/asm-arm/a.out.h | 1 +
include/asm-arm26/a.out.h | 1 +
include/asm-avr32/a.out.h | 1 +
include/asm-cris/a.out.h | 1 +
include/asm-frv/mem-layout.h | 1 +
include/asm-h8300/a.out.h | 1 +
include/asm-i386/a.out.h | 1 +
include/asm-ia64/ustack.h | 1 +
include/asm-m32r/a.out.h | 1 +
include/asm-m68k/a.out.h | 1 +
include/asm-mips/a.out.h | 1 +
include/asm-parisc/a.out.h | 1 +
include/asm-powerpc/a.out.h | 3 +++
include/asm-s390/a.out.h | 1 +
include/asm-sh/a.out.h | 1 +
include/asm-sh64/a.out.h | 1 +
include/asm-sparc/a.out.h | 1 +
include/asm-sparc64/a.out.h | 2 ++
include/asm-um/a.out.h | 3 +++
include/asm-x86_64/a.out.h | 3 ++-
include/asm-xtensa/a.out.h | 1 +
22 files changed, 29 insertions(+), 1 deletion(-)
Index: linux-2.6-2/include/asm-alpha/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-alpha/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-alpha/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -101,6 +101,8 @@ struct exec
#define STACK_TOP \
(current->personality & ADDR_LIMIT_32BIT ? 0x80000000 : 0x00120000000UL)
+#define STACK_TOP_MAX 0x00120000000UL
+
#endif
#endif /* __A_OUT_GNU_H__ */
Index: linux-2.6-2/include/asm-arm/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-arm/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-arm/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -30,6 +30,7 @@ struct exec
#ifdef __KERNEL__
#define STACK_TOP ((current->personality == PER_LINUX_32BIT) ? \
TASK_SIZE : TASK_SIZE_26)
+#define STACK_TOP_MAX TASK_SIZE
#endif
#ifndef LIBRARY_START_TEXT
Index: linux-2.6-2/include/asm-arm26/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-arm26/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-arm26/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -29,6 +29,7 @@ struct exec
#ifdef __KERNEL__
#define STACK_TOP TASK_SIZE
+#define STACK_TOP_MAX STACK_TOP
#endif
#ifndef LIBRARY_START_TEXT
Index: linux-2.6-2/include/asm-avr32/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-avr32/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-avr32/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -20,6 +20,7 @@ struct exec
#ifdef __KERNEL__
#define STACK_TOP TASK_SIZE
+#define STACK_TOP_MAX STACK_TOP
#endif
Index: linux-2.6-2/include/asm-cris/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-cris/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-cris/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -8,6 +8,7 @@
/* grabbed from the intel stuff */
#define STACK_TOP TASK_SIZE
+#define STACK_TOP_MAX STACK_TOP
struct exec
Index: linux-2.6-2/include/asm-frv/mem-layout.h
===================================================================
--- linux-2.6-2.orig/include/asm-frv/mem-layout.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-frv/mem-layout.h 2007-06-08 11:49:53.000000000 +0200
@@ -60,6 +60,7 @@
*/
#define BRK_BASE __UL(2 * 1024 * 1024 + PAGE_SIZE)
#define STACK_TOP __UL(2 * 1024 * 1024)
+#define STACK_TOP_MAX STACK_TOP
/* userspace process size */
#ifdef CONFIG_MMU
Index: linux-2.6-2/include/asm-h8300/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-h8300/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-h8300/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -20,6 +20,7 @@ struct exec
#ifdef __KERNEL__
#define STACK_TOP TASK_SIZE
+#define STACK_TOP_MAX STACK_TOP
#endif
Index: linux-2.6-2/include/asm-i386/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-i386/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-i386/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -20,6 +20,7 @@ struct exec
#ifdef __KERNEL__
#define STACK_TOP TASK_SIZE
+#define STACK_TOP_MAX STACK_TOP
#endif
Index: linux-2.6-2/include/asm-ia64/ustack.h
===================================================================
--- linux-2.6-2.orig/include/asm-ia64/ustack.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-ia64/ustack.h 2007-06-08 11:49:53.000000000 +0200
@@ -11,6 +11,7 @@
/* The absolute hard limit for stack size is 1/2 of the mappable space in the region */
#define MAX_USER_STACK_SIZE (RGN_MAP_LIMIT/2)
#define STACK_TOP (0x6000000000000000UL + RGN_MAP_LIMIT)
+#define STACK_TOP_MAX STACK_TOP
#endif
/* Make a default stack size of 2GiB */
Index: linux-2.6-2/include/asm-m32r/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-m32r/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-m32r/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -20,6 +20,7 @@ struct exec
#ifdef __KERNEL__
#define STACK_TOP TASK_SIZE
+#define STACK_TOP_MAX STACK_TOP
#endif
Index: linux-2.6-2/include/asm-m68k/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-m68k/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-m68k/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -20,6 +20,7 @@ struct exec
#ifdef __KERNEL__
#define STACK_TOP TASK_SIZE
+#define STACK_TOP_MAX STACK_TOP
#endif
Index: linux-2.6-2/include/asm-mips/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-mips/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-mips/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -40,6 +40,7 @@ struct exec
#ifdef CONFIG_64BIT
#define STACK_TOP (current->thread.mflags & MF_32BIT_ADDR ? TASK_SIZE32 : TASK_SIZE)
#endif
+#define STACK_TOP_MAX TASK_SIZE
#endif
Index: linux-2.6-2/include/asm-parisc/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-parisc/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-parisc/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -23,6 +23,7 @@ struct exec
* prumpf */
#define STACK_TOP TASK_SIZE
+#define STACK_TOP_MAX DEFAULT_TASK_SIZE
#endif
Index: linux-2.6-2/include/asm-powerpc/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-powerpc/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-powerpc/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -26,9 +26,12 @@ struct exec
#define STACK_TOP (test_thread_flag(TIF_32BIT) ? \
STACK_TOP_USER32 : STACK_TOP_USER64)
+#define STACK_TOP_MAX STACK_TOP_USER64
+
#else /* __powerpc64__ */
#define STACK_TOP TASK_SIZE
+#define STACK_TOP_MAX STACK_TOP
#endif /* __powerpc64__ */
#endif /* __KERNEL__ */
Index: linux-2.6-2/include/asm-s390/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-s390/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-s390/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -32,6 +32,7 @@ struct exec
#ifdef __KERNEL__
#define STACK_TOP TASK_SIZE
+#define STACK_TOP_MAX DEFAULT_TASK_SIZE
#endif
Index: linux-2.6-2/include/asm-sh/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-sh/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-sh/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -20,6 +20,7 @@ struct exec
#ifdef __KERNEL__
#define STACK_TOP TASK_SIZE
+#define STACK_TOP_MAX STACK_TOP
#endif
Index: linux-2.6-2/include/asm-sh64/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-sh64/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-sh64/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -31,6 +31,7 @@ struct exec
#ifdef __KERNEL__
#define STACK_TOP TASK_SIZE
+#define STACK_TOP_MAX STACK_TOP
#endif
Index: linux-2.6-2/include/asm-sparc/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-sparc/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-sparc/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -92,6 +92,7 @@ struct relocation_info /* used when head
#include <asm/page.h>
#define STACK_TOP (PAGE_OFFSET - PAGE_SIZE)
+#define STACK_TOP_MAX STACK_TOP
#endif /* __KERNEL__ */
Index: linux-2.6-2/include/asm-sparc64/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-sparc64/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-sparc64/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -101,6 +101,8 @@ struct relocation_info /* used when head
#define STACK_TOP (test_thread_flag(TIF_32BIT) ? \
STACK_TOP32 : STACK_TOP64)
+#define STACK_TOP_MAX STACK_TOP64
+
#endif
#endif /* !(__ASSEMBLY__) */
Index: linux-2.6-2/include/asm-um/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-um/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-um/a.out.h 2007-06-12 21:47:51.000000000 +0200
@@ -5,6 +5,7 @@
#include "choose-mode.h"
#undef STACK_TOP
+#undef STACK_TOP_MAX
extern unsigned long stacksizelim;
@@ -16,4 +17,6 @@ extern int honeypot;
#define STACK_TOP \
CHOOSE_MODE((honeypot ? host_task_size : task_size), task_size)
+#define STACK_TOP_MAX STACK_TOP
+
#endif
Index: linux-2.6-2/include/asm-x86_64/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-x86_64/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-x86_64/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -21,7 +21,8 @@ struct exec
#ifdef __KERNEL__
#include <linux/thread_info.h>
-#define STACK_TOP TASK_SIZE
+#define STACK_TOP TASK_SIZE
+#define STACK_TOP_MAX TASK_SIZE64
#endif
#endif /* __A_OUT_GNU_H__ */
Index: linux-2.6-2/include/asm-xtensa/a.out.h
===================================================================
--- linux-2.6-2.orig/include/asm-xtensa/a.out.h 2007-06-08 11:49:52.000000000 +0200
+++ linux-2.6-2/include/asm-xtensa/a.out.h 2007-06-08 11:49:53.000000000 +0200
@@ -17,6 +17,7 @@
/* Note: the kernel needs the a.out definitions, even if only ELF is used. */
#define STACK_TOP TASK_SIZE
+#define STACK_TOP_MAX STACK_TOP
struct exec
{
--
--
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next prev parent reply other threads:[~2007-06-13 10:03 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-06-13 10:03 [patch 0/3] no MAX_ARG_PAGES -v2 Peter Zijlstra
2007-06-13 10:03 ` Peter Zijlstra [this message]
2007-06-13 10:03 ` [patch 2/3] audit: rework execve audit Peter Zijlstra
2007-06-26 22:55 ` Andrew Morton
2007-07-03 15:00 ` Peter Zijlstra
2007-06-13 10:03 ` [patch 3/3] mm: variable length argument support Peter Zijlstra, Ollie Wild
2007-08-07 19:03 ` Olaf Hering
2007-08-07 19:20 ` Andrew Morton
2007-08-07 19:26 ` Peter Zijlstra
2007-08-07 20:10 ` Olaf Hering
2007-08-22 8:48 ` Dan Aloni
2007-08-22 8:54 ` Peter Zijlstra
2007-08-22 9:05 ` Andrew Morton
[not found] ` <20070822090251.GA7038@mail.ustc.edu.cn>
2007-08-22 9:02 ` Fengguang Wu
2007-08-22 9:02 ` Fengguang Wu
2007-06-13 23:36 ` [patch 0/3] no MAX_ARG_PAGES -v2 Luck, Tony
2007-06-14 6:23 ` Ollie Wild
2007-06-14 8:38 ` Peter Zijlstra
2007-06-14 18:22 ` Luck, Tony
2007-06-14 18:32 ` Peter Zijlstra
2007-06-14 20:58 ` Ollie Wild
2007-06-14 21:18 ` Peter Zijlstra
2007-06-15 9:24 ` Peter Zijlstra
2007-06-15 18:07 ` Ollie Wild
2007-06-15 18:49 ` Luck, Tony
2007-06-17 18:32 ` Pavel Machek
2007-06-17 19:07 ` Ingo Molnar
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