diff options
| author | Kurt Miller <kurt@cvs.openbsd.org> | 2008-08-22 10:41:38 +0000 |
|---|---|---|
| committer | Kurt Miller <kurt@cvs.openbsd.org> | 2008-08-22 10:41:38 +0000 |
| commit | e364aeeaa92456126da89cd19096f18f388d1c76 (patch) | |
| tree | c7cd01c3b7ccae7aced8b751375df5b9e3a94e93 /sys/arch/hppa | |
| parent | 36694beb0abb8a4ac82dee69e4672a1ef73d5ec3 (diff) | |
Set PIE address range to avoid or minimize mmap pressure due to limited
address space. The space between PAGE_SIZE and the non-pie fixed link
address creates no mmap pressure so use that space for PIE. However on
hppa the non-pie fixed link address is PAGE_SIZE so just use a small range
for PIE to minimize mmap pressure.
okay miod@
Diffstat (limited to 'sys/arch/hppa')
| -rw-r--r-- | sys/arch/hppa/include/vmparam.h | 6 |
1 files changed, 5 insertions, 1 deletions
diff --git a/sys/arch/hppa/include/vmparam.h b/sys/arch/hppa/include/vmparam.h index 6e3657028f8..6519c8601aa 100644 --- a/sys/arch/hppa/include/vmparam.h +++ b/sys/arch/hppa/include/vmparam.h @@ -1,4 +1,4 @@ -/* $OpenBSD: vmparam.h,v 1.33 2006/06/04 17:21:24 miod Exp $ */ +/* $OpenBSD: vmparam.h,v 1.34 2008/08/22 10:41:37 kurt Exp $ */ /* * Copyright (c) 1988-1994, The University of Utah and @@ -77,6 +77,10 @@ #define VM_MIN_KERNEL_ADDRESS ((vaddr_t)0xc0001000) #define VM_MAX_KERNEL_ADDRESS ((vaddr_t)0xef000000) +/* use a small range for PIE to minimize mmap pressure */ +#define VM_PIE_MIN_ADDR PAGE_SIZE +#define VM_PIE_MAX_ADDR 0x40000UL + /* virtual sizes (bytes) for various kernel submaps */ #define VM_PHYS_SIZE (USRIOSIZE*PAGE_SIZE) |