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Prefault the u-area pages at swapin time.

This commit is contained in:
mycroft 1999-03-30 21:01:42 +00:00
parent dcdd0d6124
commit 9d0dcbced4
1 changed files with 10 additions and 1 deletions
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11
sys/arch/arm32/arm32/vm_machdep.c
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@ -1,4 +1,4 @@
/* $NetBSD: vm_machdep.c,v 1.40 1999/03/30 15:13:42 mycroft Exp $ */
/* $NetBSD: vm_machdep.c,v 1.41 1999/03/30 21:01:42 mycroft Exp $ */
/*
* Copyright (c) 1994-1998 Mark Brinicombe.
@ -84,6 +84,7 @@ int process_read_fpregs __P((struct proc *p, struct fpreg *regs));
void switch_exit __P((struct proc *p, struct proc *proc0));
extern void proc_trampoline __P((void));
int pmap_modified_emulation __P((pmap_t, vm_offset_t));
pt_entry_t *pmap_pte __P((pmap_t, vm_offset_t));
/*
@ -231,12 +232,19 @@ void
cpu_swapin(p)
struct proc *p;
{
int i;
#ifdef PMAP_DEBUG
if (pmap_debug_level >= 0)
printf("cpu_swapin(%p, %d, %s, %p)\n", p, p->p_pid,
p->p_comm, p->p_vmspace->vm_map.pmap);
#endif /* PMAP_DEBUG */
/* Make sure the pages are *really* wired. */
for (i = 0; i < UPAGES; i++)
pmap_modified_emulation(kernel_map->pmap,
(vaddr_t)p->p_addr + (i << PGSHIFT));
/* Map the system page */
pmap_enter(p->p_vmspace->vm_map.pmap, 0x00000000, systempage.pv_pa,
VM_PROT_READ, TRUE, VM_PROT_READ);
@ -247,6 +255,7 @@ void
cpu_swapout(p)
struct proc *p;
{
#ifdef PMAP_DEBUG
if (pmap_debug_level >= 0)
printf("cpu_swapout(%p, %d, %s, %p)\n", p, p->p_pid,