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Remove redundant TLB entry flush from pmap_zero_page and friends.

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Some of these were a merge-o from the i386 mp merge.

Pointed out by YAMAMOTO Takashi.
This commit is contained in:
fvdl 2002-10-11 17:30:39 +00:00
parent d0eadcfb84
commit 4ab78a95c1
1 changed files with 5 additions and 11 deletions
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16
sys/arch/i386/i386/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.142 2002/10/08 20:19:16 fvdl Exp $ */
/* $NetBSD: pmap.c,v 1.143 2002/10/11 17:30:39 fvdl Exp $ */
/*
*
@ -60,7 +60,7 @@
*/
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.142 2002/10/08 20:19:16 fvdl Exp $");
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.143 2002/10/11 17:30:39 fvdl Exp $");
#include "opt_cputype.h"
#include "opt_user_ldt.h"
@ -2038,10 +2038,8 @@ pmap_zero_page(pa)
pmap_update_pg((vaddr_t)zerova); /* flush TLB */
memset(zerova, 0, PAGE_SIZE); /* zero */
#ifdef DIAGNOSTIC
*zpte = 0; /* zap! */
pmap_update_pg((vaddr_t)zerova); /* flush TLB */
#ifdef MULTIPROCESSOR
/* Using per-cpu VA; no shootdown required here. */
#endif
}
@ -2085,10 +2083,8 @@ pmap_pageidlezero(pa)
*ptr++ = 0;
}
#ifdef DIAGNOSTIC
*zpte = 0; /* zap! */
pmap_update_pg((vaddr_t)zerova); /* flush TLB */
#ifdef MULTIPROCESSOR
/* Using per-cpu VA; no shootdown required here. */
#endif
return (rv);
}
@ -2118,10 +2114,8 @@ pmap_copy_page(srcpa, dstpa)
*dpte = (dstpa & PG_FRAME) | PG_V | PG_RW;
pmap_update_2pg((vaddr_t)csrcva, (vaddr_t)cdstva);
memcpy(cdstva, csrcva, PAGE_SIZE);
#ifdef DIAGNOSTIC
*spte = *dpte = 0; /* zap! */
pmap_update_2pg((vaddr_t)csrcva, (vaddr_t)cdstva);
#ifdef MULTIPROCESSOR
/* Using per-cpu VA; no shootdown required here. */
#endif
}