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

retire PG_ZERO zero-fill checks. uvm_pagefree now check it for us.

This commit is contained in:
yamt 2003-11-03 04:02:13 +00:00
parent 70538d0c22
commit c8d12c1c35
1 changed files with 3 additions and 46 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

49
sys/arch/i386/i386/pmap.c
View File

@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.163 2003/11/01 15:21:02 yamt Exp $ */
/* $NetBSD: pmap.c,v 1.164 2003/11/03 04:02:13 yamt Exp $ */
/*
*
@ -60,7 +60,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.163 2003/11/01 15:21:02 yamt Exp $");
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.164 2003/11/03 04:02:13 yamt Exp $");
#include "opt_cputype.h"
#include "opt_user_ldt.h"
@ -2273,30 +2273,8 @@ pmap_remove_pte(pmap, ptp, pte, va, cpumaskp, flags)
pmap->pm_stats.wired_count--;
pmap->pm_stats.resident_count--;
if (ptp) {
if (ptp)
ptp->wire_count--; /* dropping a PTE */
#ifdef DEBUG
if (ptp->wire_count == 1) {
/*
* make sure the PTP is zero filled.
*
* XXXyamt
* it's better to do this check
* in uvm rather than here.
*/
const char *cp =
(const char *)(((vaddr_t)pte) & ~PAGE_MASK);
const char *ep = cp + PAGE_SIZE;
while (cp < ep) {
if (*cp != 0)
panic("pmap_remove_pte: "
"free ptp not zero-filled");
cp++;
}
}
#endif /* DEBUG */
}
pmap_tlb_shootdown(pmap, va, opte, cpumaskp);
@ -2612,27 +2590,6 @@ pmap_page_remove(pg)
if (pve->pv_ptp) {
pve->pv_ptp->wire_count--;
if (pve->pv_ptp->wire_count <= 1) {
#ifdef DEBUG
/*
* make sure the PTP is zero filled.
*
* XXXyamt
* it's better to do this check
* in uvm rather than here.
*/
const char *cp =
(const char *)
(((vaddr_t)&ptes[x86_btop(pve->pv_va)]) &
~PAGE_MASK);
const char *ep = cp + PAGE_SIZE;
while (cp < ep) {
if (*cp != 0)
panic("pmap_page_remove: "
"free ptp not zero-filled");
cp++;
}
#endif /* DEBUG */
/* zap! */
opte = x86_atomic_testset_ul(
&pve->pv_pmap->pm_pdir[pdei(pve->pv_va)],