Date: Mon, 5 Sep 2005 21:32:03 +0000 (UTC) From: Marcel Moolenaar <marcel@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/ia64/ia64 pmap.c Message-ID: <200509052132.j85LW3Ql020274@repoman.freebsd.org>
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marcel 2005-09-05 21:32:03 UTC
FreeBSD src repository
Modified files:
sys/ia64/ia64 pmap.c
Log:
o In pmap_remove_pte: always invalidate the page. Previously the page
was not invalidated if the PTE was not actually being removed. In
an UP kernel this didn't cause problems, because the new mapping
would preempt the old one. In an SMP kernel this could lead to the
use of stale translations when processes move between CPUs at the
"right" moment. This fixes the last of the obvious SMP problems
and it should be safe to enable SMP by default now.
o In pmap_remove_pte: minor code refactoring to avoid duplication.
o Test all PTE pointers against NULL. Don't use implicit boolean
tests.
Revision Changes Path
1.166 +11 -13 src/sys/ia64/ia64/pmap.c
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