Date: Sat, 25 Oct 2003 11:51:41 -0700 (PDT) From: Peter Wemm <peter@FreeBSD.org> To: src-committers@FreeBSD.org, cvs-src@FreeBSD.org, cvs-all@FreeBSD.org Subject: cvs commit: src/sys/i386/i386 pmap.c Message-ID: <200310251851.h9PIpfS1065265@repoman.freebsd.org>
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peter 2003/10/25 11:51:41 PDT
FreeBSD src repository
Modified files:
sys/i386/i386 pmap.c
Log:
For the SMP case, flush the TLB at the beginning of the page zero/copy
routines. Otherwise we run into trouble with speculative tlb preloads
on SMP systems. This effectively defeats Jeff's revision 1.438
optimization (for his pentium4-M laptop) in the SMP case. It breaks
other systems, particularly athlon-MP's.
Revision Changes Path
1.450 +13 -0 src/sys/i386/i386/pmap.c
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