[src/trunk]: src/sys/arch/arm/include/arm32 __USE_TOPDOWN_VM

[skrll <skrll%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/8b5f5ffe716f
branches:  trunk
changeset: 338967:8b5f5ffe716f
user:      skrll <skrll%NetBSD.org@localhost>
date:      Sat Jun 20 07:13:25 2015 +0000

description:
__USE_TOPDOWN_VM

Fixes PR/49974: mmap(2) of large anonymous regions is broken

"go for it" from matt@

diffstat:

 sys/arch/arm/include/arm32/vmparam.h |  3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diffs (17 lines):

diff -r ea139c6c1181 -r 8b5f5ffe716f sys/arch/arm/include/arm32/vmparam.h
--- a/sys/arch/arm/include/arm32/vmparam.h      Sat Jun 20 04:18:00 2015 +0000
+++ b/sys/arch/arm/include/arm32/vmparam.h      Sat Jun 20 07:13:25 2015 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: vmparam.h,v 1.38 2015/06/02 05:54:23 matt Exp $        */
+/*     $NetBSD: vmparam.h,v 1.39 2015/06/20 07:13:25 skrll Exp $       */
 
 /*
  * Copyright (c) 2001, 2002 Wasabi Systems, Inc.
@@ -47,6 +47,7 @@
 #include <arm/cpuconf.h>
 #include <arm/arm32/pte.h>     /* pt_entry_t */
 
+#define        __USE_TOPDOWN_VM 
 #define        USRSTACK        VM_MAXUSER_ADDRESS
 
 /*