svn commit: r228413 - head/sys/powerpc/include
Nathan Whitehorn
nwhitehorn at FreeBSD.org
Sun Dec 11 17:23:03 UTC 2011
Author: nwhitehorn
Date: Sun Dec 11 17:23:03 2011
New Revision: 228413
URL: http://svn.freebsd.org/changeset/base/228413
Log:
Increase the available virtual address space for user programs on PowerPC
AIM systems to 4 GB on 32-bit systems and 2^64 bytes on 64-bit systems.
VM_MAXUSER_ADDRESS remains at 2 GB on pending Book-E, pending review of
an increase to 3 GB by those more familiar with Book-E.
Modified:
head/sys/powerpc/include/vmparam.h
Modified: head/sys/powerpc/include/vmparam.h
==============================================================================
--- head/sys/powerpc/include/vmparam.h Sun Dec 11 17:19:48 2011 (r228412)
+++ head/sys/powerpc/include/vmparam.h Sun Dec 11 17:23:03 2011 (r228413)
@@ -57,29 +57,34 @@
#define MAXSSIZ (64*1024*1024) /* max stack size */
#endif
+#ifdef AIM
+#define VM_MAXUSER_ADDRESS32 ((vm_offset_t)0xfffff000)
+#else
+#define VM_MAXUSER_ADDRESS32 ((vm_offset_t)0x7ffff000)
+#endif
+
/*
* Would like to have MAX addresses = 0, but this doesn't (currently) work
*/
#if !defined(LOCORE)
#ifdef __powerpc64__
#define VM_MIN_ADDRESS (0x0000000000000000UL)
-#define VM_MAXUSER_ADDRESS (0x7ffffffffffff000UL)
-#define SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE)
+#define VM_MAXUSER_ADDRESS (0xfffffffffffff000UL)
#define VM_MAX_ADDRESS (0xffffffffffffffffUL)
#else
#define VM_MIN_ADDRESS ((vm_offset_t)0)
-#define VM_MAXUSER_ADDRESS ((vm_offset_t)0x7ffff000)
-#define SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE)
-#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
+#define VM_MAXUSER_ADDRESS VM_MAXUSER_ADDRESS32
+#define VM_MAX_ADDRESS ((vm_offset_t)0xffffffff)
#endif
+#define SHAREDPAGE (VM_MAXUSER_ADDRESS - PAGE_SIZE)
#else /* LOCORE */
-#ifndef __powerpc64__
+#if !defined(__powerpc64__) && defined(E500)
#define VM_MIN_ADDRESS 0
#define VM_MAXUSER_ADDRESS 0x7ffff000
#endif
#endif /* LOCORE */
-#define FREEBSD32_SHAREDPAGE (0x7ffff000 - PAGE_SIZE)
+#define FREEBSD32_SHAREDPAGE (VM_MAXUSER_ADDRESS32 - PAGE_SIZE)
#define FREEBSD32_USRSTACK FREEBSD32_SHAREDPAGE
#ifdef AIM
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