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Increase the maximum userspace address to 4TB. Leave the stack at 8G

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for now, but make a note that we might want to move it down to 4G later.
This commit is contained in:
thorpej 1998-03-12 01:25:52 +00:00
parent e046925c3a
commit 152a4bfa60
1 changed files with 14 additions and 7 deletions
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21
sys/arch/alpha/include/vmparam.h
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@ -1,6 +1,5 @@
/* $NetBSD: vmparam.h,v 1.9 1998/02/27 19:39:03 thorpej Exp $ */
#ifndef _ALPHA_VMPARAM_H
#define _ALPHA_VMPARAM_H
/* $NetBSD: vmparam.h,v 1.10 1998/03/12 01:25:52 thorpej Exp $ */
/*
* Copyright (c) 1988 University of Utah.
* Copyright (c) 1992, 1993
@ -43,6 +42,9 @@
* @(#)vmparam.h 8.2 (Berkeley) 4/22/94
*/
#ifndef _ALPHA_VMPARAM_H_
#define _ALPHA_VMPARAM_H_
/*
* Machine dependent constants for Alpha.
*/
@ -52,9 +54,14 @@
* is the top (end) of the user stack. Immediately above the user stack
* resides the user structure, which is UPAGES long and contains the
* kernel stack.
*
* Digital UNIX (formerly DEC OSF/1) places the stack below the
* text segment (i.e. growing downward from 4G). We may want to
* consider doing that at some point, but it might require changes
* to the exec code.
*/
#define USRTEXT CLBYTES
#define USRSTACK VM_MAXUSER_ADDRESS
#define USRSTACK ((vm_offset_t)0x0000000200000000) /* 8G */
/*
* Virtual memory related constants, all in bytes
@ -130,8 +137,8 @@
*/
/* user/kernel map constants */
#define VM_MIN_ADDRESS ((vm_offset_t)ALPHA_USEG_BASE) /* 0 */
#define VM_MAXUSER_ADDRESS ((vm_offset_t)0x0000000200000000) /* 8G XXX */
#define VM_MIN_ADDRESS ((vm_offset_t)ALPHA_USEG_BASE) /* 0 */
#define VM_MAXUSER_ADDRESS ((vm_offset_t)(ALPHA_USEG_END + 1L)) /* 4T */
#define VM_MAX_ADDRESS VM_MAXUSER_ADDRESS
#define VM_MIN_KERNEL_ADDRESS ((vm_offset_t)ALPHA_K1SEG_BASE)
#define VM_MAX_KERNEL_ADDRESS ((vm_offset_t)ALPHA_K1SEG_END)
@ -169,4 +176,4 @@ struct pmap_physseg {
struct pv_head *pvhead; /* pv list of this seg */
};
#endif /* !_ALPHA_VMPARAM_H */
#endif /* ! _ALPHA_VMPARAM_H_ */