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No longer need to pmap_emulate_reference() in cpu_fork() or cpu_swapin(),

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since uvm_fault_wire() does the right thing with access_type.
This commit is contained in:
thorpej 1999-05-26 00:37:40 +00:00
parent 7b4db806b6
commit 32de988d29
1 changed files with 2 additions and 24 deletions
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26
sys/arch/alpha/alpha/vm_machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: vm_machdep.c,v 1.47 1999/05/16 22:24:16 thorpej Exp $ */
/* $NetBSD: vm_machdep.c,v 1.48 1999/05/26 00:37:40 thorpej Exp $ */
/*
* Copyright (c) 1994, 1995, 1996 Carnegie-Mellon University.
@ -29,7 +29,7 @@
#include <sys/cdefs.h> /* RCS ID & Copyright macro defns */
__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.47 1999/05/16 22:24:16 thorpej Exp $");
__KERNEL_RCSID(0, "$NetBSD: vm_machdep.c,v 1.48 1999/05/26 00:37:40 thorpej Exp $");
#include <sys/param.h>
#include <sys/systm.h>
@ -145,7 +145,6 @@ cpu_fork(p1, p2, stack, stacksize)
size_t stacksize;
{
struct user *up = p2->p_addr;
int i;
p2->p_md.md_tf = p1->p_md.md_tf;
p2->p_md.md_flags = p1->p_md.md_flags & MDP_FPUSED;
@ -156,16 +155,6 @@ cpu_fork(p1, p2, stack, stacksize)
*/
p2->p_md.md_pcbpaddr = (void *)vtophys((vaddr_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, (vaddr_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.
@ -286,23 +275,12 @@ cpu_swapin(p)
register struct proc *p;
{
struct user *up = p->p_addr;
int i;
/*
* Cache the physical address of the pcb, so we can swap to
* it easily.
*/
p->p_md.md_pcbpaddr = (void *)vtophys((vaddr_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(p, (vaddr_t)up + i * PAGE_SIZE,
0, 1);
}
/*