Aren
/
NetBSD
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Make sure curproc->p_addr is set before any faults occur. 

Put msgbuf in page zero (so its location is predictable).
This commit is contained in:
gwr 1995-04-07 04:44:55 +00:00
parent 9a714f87a8
commit e7f174fdcd
2 changed files with 28 additions and 24 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

26
sys/arch/sun3/sun3/locore2.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: locore2.c,v 1.36 1995/03/26 19:37:41 gwr Exp $ */
/* $NetBSD: locore2.c,v 1.37 1995/04/07 04:44:55 gwr Exp $ */
/*
* Copyright (c) 1994 Gordon W. Ross
@ -304,18 +304,17 @@ void sun3_vm_init()
/*
* Message buffer page (msgbuf).
* XXX - Should put this in physical page zero.
* Also unmap a page at KERNBASE for redzone?
* This is put in physical page zero so it
* is always in the same place after reboot.
*/
msgbufp = (struct msgbuf *) virtual_avail;
virtual_avail += NBPG;
avail_start += NBPG;
msgbufmapped = 1;
va = KERNBASE;
/* Make it non-cached. */
va = (vm_offset_t) msgbufp;
pte = get_pte(va);
pte |= PG_NC;
set_pte(va, pte);
/* offset by half a page to avoid PROM scribbles */
msgbufp = (struct msgbuf *)(va + 0x1000);
msgbufmapped = 1;
/*
* Virtual and physical pages for proc[0] u-area (already mapped)
@ -444,14 +443,17 @@ void sun3_vm_init()
if (u_area_va != UADDR)
mon_panic("sun3_vm_init: u-area vaddr taken?\n");
/*
* Must initialize p_addr before autoconfig or
* the fault handler will get a NULL reference.
*/
proc0.p_addr = proc0paddr;
/* Initialize cached PTEs for u-area mapping. */
save_u_area(&proc0, proc0paddr);
/* map proc0's u-area at the standard address */
#ifdef DIAGNOSTIC
if (curproc != &proc0)
panic("sun3_vm_init: bad curproc");
#endif
curproc = &proc0;
load_u_area();
/* Initialize the "u-area" pages. */

26
sys/arch/sun3/sun3/sun3_startup.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: sun3_startup.c,v 1.36 1995/03/26 19:37:41 gwr Exp $ */
/* $NetBSD: sun3_startup.c,v 1.37 1995/04/07 04:44:55 gwr Exp $ */
/*
* Copyright (c) 1994 Gordon W. Ross
@ -304,18 +304,17 @@ void sun3_vm_init()
/*
* Message buffer page (msgbuf).
* XXX - Should put this in physical page zero.
* Also unmap a page at KERNBASE for redzone?
* This is put in physical page zero so it
* is always in the same place after reboot.
*/
msgbufp = (struct msgbuf *) virtual_avail;
virtual_avail += NBPG;
avail_start += NBPG;
msgbufmapped = 1;
va = KERNBASE;
/* Make it non-cached. */
va = (vm_offset_t) msgbufp;
pte = get_pte(va);
pte |= PG_NC;
set_pte(va, pte);
/* offset by half a page to avoid PROM scribbles */
msgbufp = (struct msgbuf *)(va + 0x1000);
msgbufmapped = 1;
/*
* Virtual and physical pages for proc[0] u-area (already mapped)
@ -444,14 +443,17 @@ void sun3_vm_init()
if (u_area_va != UADDR)
mon_panic("sun3_vm_init: u-area vaddr taken?\n");
/*
* Must initialize p_addr before autoconfig or
* the fault handler will get a NULL reference.
*/
proc0.p_addr = proc0paddr;
/* Initialize cached PTEs for u-area mapping. */
save_u_area(&proc0, proc0paddr);
/* map proc0's u-area at the standard address */
#ifdef DIAGNOSTIC
if (curproc != &proc0)
panic("sun3_vm_init: bad curproc");
#endif
curproc = &proc0;
load_u_area();
/* Initialize the "u-area" pages. */