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fix virtual alias problem in pmap_copy_page().

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to eliminate virtual alias, source page should also be flushed.
fixes PR/13587.
This commit is contained in:
shin 2001-10-27 05:44:45 +00:00
parent a54f8441f8
commit 4843675231
1 changed files with 4 additions and 6 deletions
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10
sys/arch/mips/mips/pmap.c
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@ -1,4 +1,4 @@
/* $NetBSD: pmap.c,v 1.134 2001/09/10 21:19:18 chris Exp $ */
/* $NetBSD: pmap.c,v 1.135 2001/10/27 05:44:45 shin Exp $ */
/*-
* Copyright (c) 1998, 2001 The NetBSD Foundation, Inc.
@ -78,7 +78,7 @@
#include <sys/cdefs.h>
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.134 2001/09/10 21:19:18 chris Exp $");
__KERNEL_RCSID(0, "$NetBSD: pmap.c,v 1.135 2001/10/27 05:44:45 shin Exp $");
/*
* Manages physical address maps.
@ -1617,10 +1617,8 @@ pmap_copy_page(src, dst)
* the destination as well?
*/
if (CPUISMIPS3) {
if (mips3_L1TwoWayCache)
MachHitFlushDCache(MIPS_PHYS_TO_KSEG0(dst), NBPG);
else
MachFlushDCache(dst, NBPG);
MachHitFlushDCache(MIPS_PHYS_TO_KSEG0(src), NBPG);
MachHitFlushDCache(MIPS_PHYS_TO_KSEG0(dst), NBPG);
}
#endif
}