Date: Sun, 4 Sep 2005 19:06:27 +0000 (UTC) From: Alan Cox <alc@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/amd64/amd64 pmap.c src/sys/i386/i386 pmap.c Message-ID: <200509041906.j84J6REP088898@repoman.freebsd.org>
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alc 2005-09-04 19:06:27 UTC
FreeBSD src repository
Modified files:
sys/amd64/amd64 pmap.c
sys/i386/i386 pmap.c
Log:
Eliminate unnecessary TLB invalidations by pmap_enter(). Specifically,
eliminate TLB invalidations when permissions are relaxed, such as when a
read-only mapping is changed to a read/write mapping. Additionally,
eliminate TLB invalidations when bits that are ignored by the hardware,
such as PG_W ("wired mapping"), are changed.
Reviewed by: tegge
Revision Changes Path
1.528 +22 -16 src/sys/amd64/amd64/pmap.c
1.532 +23 -16 src/sys/i386/i386/pmap.c
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