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Don't bother calling pmap_emulate_reference() from cpu_fork(). It isn't

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needed and it panics a DIAGNOSTIC kernel.
This commit is contained in:
Doug Rabson 1998-07-12 16:30:58 +00:00
parent bb8a6f725b
commit 8e8c234f4d
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=37597
3 changed files with 3 additions and 33 deletions
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12
sys/alpha/alpha/vm_machdep.c
View File

@ -38,7 +38,7 @@
*
* from: @(#)vm_machdep.c 7.3 (Berkeley) 5/13/91
* Utah $Hdr: vm_machdep.c 1.16.1.1 89/06/23$
* $Id: vm_machdep.c,v 1.1 1998/06/10 10:53:40 dfr Exp $
* $Id: vm_machdep.c,v 1.2 1998/06/10 19:59:41 dfr Exp $
*/
/*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
@ -128,16 +128,6 @@ cpu_fork(p1, p2)
*/
p2->p_md.md_pcbpaddr = (void*) vtophys((vm_offset_t) &up->u_pcb);
/*
* Simulate a write to the process's U-area pages,
* so that the system doesn't lose badly.
* (If this isn't done, the kernel can't read or
* write the kernel stack. "Ouch!")
*/
for (i = 0; i < UPAGES; i++)
pmap_emulate_reference(p2, (vm_offset_t)up + i * PAGE_SIZE,
0, 1);
/*
* Copy floating point state from the FP chip to the PCB
* if this process has state stored there.

12
sys/powerpc/aim/vm_machdep.c
View File

@ -38,7 +38,7 @@
*
* from: @(#)vm_machdep.c 7.3 (Berkeley) 5/13/91
* Utah $Hdr: vm_machdep.c 1.16.1.1 89/06/23$
* $Id: vm_machdep.c,v 1.1 1998/06/10 10:53:40 dfr Exp $
* $Id: vm_machdep.c,v 1.2 1998/06/10 19:59:41 dfr Exp $
*/
/*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
@ -128,16 +128,6 @@ cpu_fork(p1, p2)
*/
p2->p_md.md_pcbpaddr = (void*) vtophys((vm_offset_t) &up->u_pcb);
/*
* Simulate a write to the process's U-area pages,
* so that the system doesn't lose badly.
* (If this isn't done, the kernel can't read or
* write the kernel stack. "Ouch!")
*/
for (i = 0; i < UPAGES; i++)
pmap_emulate_reference(p2, (vm_offset_t)up + i * PAGE_SIZE,
0, 1);
/*
* Copy floating point state from the FP chip to the PCB
* if this process has state stored there.

12
sys/powerpc/powerpc/vm_machdep.c
View File

@ -38,7 +38,7 @@
*
* from: @(#)vm_machdep.c 7.3 (Berkeley) 5/13/91
* Utah $Hdr: vm_machdep.c 1.16.1.1 89/06/23$
* $Id: vm_machdep.c,v 1.1 1998/06/10 10:53:40 dfr Exp $
* $Id: vm_machdep.c,v 1.2 1998/06/10 19:59:41 dfr Exp $
*/
/*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
@ -128,16 +128,6 @@ cpu_fork(p1, p2)
*/
p2->p_md.md_pcbpaddr = (void*) vtophys((vm_offset_t) &up->u_pcb);
/*
* Simulate a write to the process's U-area pages,
* so that the system doesn't lose badly.
* (If this isn't done, the kernel can't read or
* write the kernel stack. "Ouch!")
*/
for (i = 0; i < UPAGES; i++)
pmap_emulate_reference(p2, (vm_offset_t)up + i * PAGE_SIZE,
0, 1);
/*
* Copy floating point state from the FP chip to the PCB
* if this process has state stored there.