Date: Sat, 12 Jun 2004 20:01:48 +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: <200406122001.i5CK1mn3082272@repoman.freebsd.org>
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alc 2004-06-12 20:01:48 UTC
FreeBSD src repository
Modified files:
sys/amd64/amd64 pmap.c
sys/i386/i386 pmap.c
Log:
In a multiprocessor, the PG_W bit in the pte must be changed atomically.
Otherwise, the setting of the PG_M bit by one processor could be lost if
another processor is simultaneously changing the PG_W bit.
Reviewed by: tegge@
Revision Changes Path
1.467 +2 -2 src/sys/amd64/amd64/pmap.c
1.468 +2 -1 src/sys/i386/i386/pmap.c
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