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Message-Id: <20031101.010015.68475856.okuyamak@dd.iij4u.or.jp>
To: FreeBSD-users-jp@jp.FreeBSD.org
From: Kenichi Okuyama <okuyamak@dd.iij4u.or.jp>
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Date: Sat, 01 Nov 2003 01:00:15 +0900
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Subject: [FreeBSD-users-jp 77091] Re: over 4GB mem (PAE)
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$B1|;3$G$9!#(B

>>>>> "$BC+B<(B" == Seigo Tanimura <tanimura@tanimura.dyndns.org> writes:
$BC+B<(B> $B<B$O$3$l!"JLJ}LL$+$i<{MW$,$"$C$?$j$7$^$9!#$@$$$VA0$K!"(Bbio buffer $BMQ$N(B
$BC+B<(B> $B%"%I%l%96u4V$,69$/$F(B(*1)$B:$$C$?$3$H$,$"$j$^$7$?!#$G!";n$7$K%+!<%M%k$N%"(B
$BC+B<(B> $B%I%l%96u4VA4BN$r;H$o$;$k$h$&$K$7$F$_$?$s$G$9$,!"$9$k$H:#EY$O(B bio
$BC+B<(B> buffer $B$h$j$b>.$5$$%5%$%:$N%a%b%j$rB??t(B alloc $B$7$?>l9g$K%"%I%l%96u4V$,(B 
$BC+B<(B> fragment $B$r5/$3$7$F(B bio buffer $B$,(B alloc $B$7$E$i$/$J$k$H$$$&LdBj$,=P$F$-(B
$BC+B<(B> $B$^$9(B($B$H%D%C%3$^$l$?(B)$B!#(B
$BC+B<(B> $B$=$N;~$K(B phk $B$,!"!V(BI/O $BCf$O(B bio buffer $B$r(B unmap $B$7$F!"$=$N%"%I%l%96u4V(B
$BC+B<(B> $B$rL@EO$;$J$$$+$J$!!W$H$$$C$F$?$s$G$9$M!#(B

$B$3$l!">e5-$N>r7o2<$G$d$k$HJ*M}%"%I%l%9$,%U%i%0%a%s%H$r5/$3$7$^$;$s$+(B?
#$B$=$l$H$b!"5/$3$5$J$$$0$i$$%a%b%j$r@Q$s$G$$$k(B?

DMA$B$G;XDj$9$k%"%I%l%9$OJ*M}%"%I%l%9$J$N$G!"O@M}%"%I%l%9$,%U%i%0%a%s(B
$B%H$r5/$3$5$J$/$F$b!"J*M}%"%I%l%9$,%U%i%0%a%s%H$r5/$3$7$?$i@)8f$N?I$5(B
$B$OF1$8$0$i$$$"$k$h$&$J5$$,$7$^$9$,!D!#(B
#$B$=$7$F%W%m%;%9$,$A$^$A$^$H!"$+$D%P%i%P%i$K(B page $B$r(Ballocate $B$7$?$j3+(B
#$BJ|$7$?$j(BpageIO $B$9$l$P!"$"$C$5$j%U%i%0%a%s%H$r5/$3$9$h$&$J5$$,!D(B

$B$^$!!":G6a$O(BNIC$B$b!"(BSCSI$B$b!"%3%s%H%m!<%i!<$,8-$/$J$C$F!"(B
scatter/gather$B$0$i$$Ev$?$jA0$ND+HSA0!"$H8@$o$s$P$+$j$K$d$C$F$/$l$k$N(B
$B$G!"J*M}%a%b%j$,B?>/%U%i%0%a%s%H$r5/$3$7$F$bJ?5$$J5$$b$7$^$9$,!#(B


$B$H$J$k$H!"(Bbuffer $B$H$+$O%G%U%)%k%H(B unmapped $B$GK\Ev$KI,MW$J$H$-$@$1(B 
map $B$9$k!"$H$$$&$N$,@5$7$$(BVM$B$N$"$jJ}$+!D!#$I$3$+$GJ9$$$?$3$H$N$"$k(B
lazy$B$5$@$J$!(B($B2>A[%a%b%j$N3d$jEv$F$H$+(B)$B!#(B
#$B%b%K%?!<$,;k@~$r8!=P$7$F(B($B$$$d!";k@~$8$c$J$/$FBe$o$j$N$b$N$r8!=P$9$l(B
#$B$P$$$$$s$@$1$I(B)$B!"%f!<%6!<$,8+$F$J$$$HI=<($7$J$$!"$H$+$$$&H/A[$K;w$F(B
#$B$k$J$!!#(B

$BB?J,!"(Bkernel $B6u4V$,69$/$J$k$H!"$=$l$G$bB-$j$J$$$s$@$m$&$J(B(process $B$,(B
$B<!!9?7$7$$(Bbuffer$B$X$N;2>H$rMW5a$9$k$N$G!"(Bmap/unmap$B$,BgA{$.$K$J$k(B)$B!#$G!"(B
$B7k6I2>A[6u4V$r(B64bit$BMQ0U$9$k$[$&$,Aa$$$H$J$C$F!D!V$=$l$J$i:G=i$+$i$=(B
$B$&$7$m$h!W$H$=$N:"$N<c$$O"Cf$K8@$o$l$A$c$&$o$1$@!#(B
#$B!V:G=i$+$i3'(BIA64$B;H$C$F$l$PJ?OB$@$C$?$N$K!W$H$+8@$o$l$A$c$&$o$1$@!#(B
##$BEvA3(BIA32 emulation $B%b!<%I$O@dBP;H$o$J$$$H$$$&$3$H$G!#(B
---- 
$B1|;3(B $B7r0l(B[$BGaGX2q(B:No.0x00000001]
#URL http://www.dd.iij4u.or.jp/~okuyamak/
#$B:#F|$N$*8@MU!X?7$7$$?&>l!Y(B:$B!V(BNTT Data$B@hC<5;=Q3t<02q<R!W$N%*!<%W%s%=!<(B
#$B%95;=QIt$K7h$^$j$^$7$?!#(B


