Date: Fri, 30 Jan 2004 10:30:39 -0800 (PST) From: John Baldwin <jhb@FreeBSD.org> To: Perforce Change Reviews <perforce@freebsd.org> Subject: PERFORCE change 46205 for review Message-ID: <200401301830.i0UIUdDE029779@repoman.freebsd.org>
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http://perforce.freebsd.org/chv.cgi?CH=46205 Change 46205 by jhb@jhb_slimer on 2004/01/30 10:29:41 Add bde optimizations to reduce partial register stalls. Affected files ... .. //depot/projects/smpng/sys/i386/isa/atpic_vector.s#5 edit Differences ... ==== //depot/projects/smpng/sys/i386/isa/atpic_vector.s#5 (text+ko) ==== @@ -67,9 +67,12 @@ cmp $KPSEL,%ax ; /* are we already in the kernel? */ \ je 1f ; /* skip expensive segment reloads */ \ mov $KDSEL,%ax ; /* load kernel ds, es and fs */ \ + data16 ; \ mov %ax,%ds ; \ + data16 ; \ mov %ax,%es ; \ mov $KPSEL,%ax ; \ + data16 ; \ mov %ax,%fs ; \ 1: ; \ FAKE_MCOUNT(13*4(%esp)) ; /* XXX late to avoid double count */ \
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