From: Anton Blanchard <anton@samba•org>
To: linuxppc-dev@ozlabs•org
Subject: [patch 03/10] powerpc: Rearrange mmap.c
Date: Sun, 22 Feb 2009 22:50:00 +1100 [thread overview]
Message-ID: <20090222115332.041708631@samba.org> (raw)
In-Reply-To: 20090222114957.213647384@samba.org
Rearrange mmap.c to better match the x86 version.
Signed-off-by: Anton Blanchard <anton@samba•org>
---
Index: linux-2.6/arch/powerpc/mm/mmap.c
===================================================================
--- linux-2.6.orig/arch/powerpc/mm/mmap.c 2009-02-20 13:40:26.000000000 +1100
+++ linux-2.6/arch/powerpc/mm/mmap.c 2009-02-20 13:41:06.000000000 +1100
@@ -34,6 +34,17 @@
#define MIN_GAP (128*1024*1024)
#define MAX_GAP (TASK_SIZE/6*5)
+static inline int mmap_is_legacy(void)
+{
+ if (current->personality & ADDR_COMPAT_LAYOUT)
+ return 1;
+
+ if (current->signal->rlim[RLIMIT_STACK].rlim_cur == RLIM_INFINITY)
+ return 1;
+
+ return sysctl_legacy_va_layout;
+}
+
static inline unsigned long mmap_base(void)
{
unsigned long gap = current->signal->rlim[RLIMIT_STACK].rlim_cur;
@@ -46,17 +57,6 @@
return TASK_SIZE - (gap & PAGE_MASK);
}
-static inline int mmap_is_legacy(void)
-{
- if (current->personality & ADDR_COMPAT_LAYOUT)
- return 1;
-
- if (current->signal->rlim[RLIMIT_STACK].rlim_cur == RLIM_INFINITY)
- return 1;
-
- return sysctl_legacy_va_layout;
-}
-
/*
* This function, called very early during the creation of a new
* process VM image, sets up which VM layout function to use:
--
next prev parent reply other threads:[~2009-02-22 11:50 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-02-22 11:49 [patch 00/10] PowerPC address space randomisation Anton Blanchard
2009-02-22 11:49 ` [patch 01/10] powerpc: Move is_32bit_task Anton Blanchard
2009-02-22 11:49 ` [patch 02/10] powerpc: Use new layout for 64bit binaries Anton Blanchard
2009-02-22 11:50 ` Anton Blanchard [this message]
2009-02-22 11:50 ` [patch 04/10] powerpc: Randomise mmap start address Anton Blanchard
2009-02-22 11:50 ` [patch 05/10] powerpc: More stack randomisation for 64bit binaries Anton Blanchard
2009-02-22 11:50 ` [patch 06/10] powerpc: Randomise lower bits of stack address Anton Blanchard
2009-02-22 11:50 ` [patch 07/10] powerpc: Randomise the brk region Anton Blanchard
2009-02-22 11:50 ` [patch 08/10] powerpc: Ensure random space between stack and mmaps Anton Blanchard
2009-02-22 11:50 ` [patch 09/10] powerpc: Increase stack gap on 64bit binaries Anton Blanchard
2009-02-22 11:50 ` [patch 10/10] powerpc: Randomise PIEs Anton Blanchard
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