Module Name: src
Committed By: kamil
Date: Sat May 26 18:18:19 UTC 2018
Modified Files:
src/sys/compat/netbsd32: netbsd32_sysctl.c
Log Message:
Handle vm.maxaddress in compat_netbsd32(8)
Return VM_MAXUSER_ADDRESS32 instead of the 64-bit specific address.
Use CTLTYPE_INT instead of CTLTYPE_LONG in order to retain the same integer
type between 64-bit native kernel and 32-bit emulated program.
There probably should be CTLTYPE_LONG32 available for this purpose.
On NetBSD/i386:
vm.maxaddress=bfeff000
On NetBSD/amd64:
vm.maxaddress=7fbfdfeff000
On NetBSD/amd64 running i386 program:
vm.maxaddress=fffff000
A 32-bit program on the 64-bit kernel can use larger user space, this
difference is on purpose and expected.
Sponsored by <The NetBSD Foundation>
To generate a diff of this commit:
cvs rdiff -u -r1.38 -r1.39 src/sys/compat/netbsd32/netbsd32_sysctl.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/compat/netbsd32/netbsd32_sysctl.c
diff -u src/sys/compat/netbsd32/netbsd32_sysctl.c:1.38 src/sys/compat/netbsd32/netbsd32_sysctl.c:1.39
--- src/sys/compat/netbsd32/netbsd32_sysctl.c:1.38 Tue Oct 31 16:10:25 2017
+++ src/sys/compat/netbsd32/netbsd32_sysctl.c Sat May 26 18:18:19 2018
@@ -1,4 +1,4 @@
-/* $NetBSD: netbsd32_sysctl.c,v 1.38 2017/10/31 16:10:25 kre Exp $ */
+/* $NetBSD: netbsd32_sysctl.c,v 1.39 2018/05/26 18:18:19 kamil Exp $ */
/*
* Copyright (c) 2003 The NetBSD Foundation, Inc.
@@ -32,7 +32,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: netbsd32_sysctl.c,v 1.38 2017/10/31 16:10:25 kre Exp $");
+__KERNEL_RCSID(0, "$NetBSD: netbsd32_sysctl.c,v 1.39 2018/05/26 18:18:19 kamil Exp $");
#if defined(_KERNEL_OPT)
#include "opt_ddb.h"
@@ -147,6 +147,12 @@ netbsd32_sysctl_init(void)
netbsd32_sysctl_vm_loadavg, 0, NULL,
sizeof(struct netbsd32_loadavg),
CTL_VM, VM_LOADAVG, CTL_EOL);
+ sysctl_createv(&netbsd32_clog, 0, &_root, NULL,
+ CTLFLAG_PERMANENT|CTLFLAG_IMMEDIATE,
+ CTLTYPE_INT, "maxaddress",
+ SYSCTL_DESCR("Maximum user address"),
+ NULL, VM_MAXUSER_ADDRESS32, NULL, 0,
+ CTL_VM, VM_MAXADDRESS, CTL_EOL);
sysctl_createv(&netbsd32_clog, 0, &_root, NULL,
CTLFLAG_PERMANENT,
