Pokambirana za ma processor a x86 omwe sagwirizana ndi malangizo a "cmpxchg8b", Linus Torvalds adanena kuti ingakhale nthawi yoti kukhalapo kwa malangizowa kukhale kovomerezeka kuti kernel igwire ntchito ndikugwetsa kuthandizira mapurosesa a i486 omwe sagwirizana ndi "cmpxchg8b" m'malo moyesera kutsanzira magwiridwe antchito a malangizowa pa mapurosesa omwe palibe amene amawagwiritsanso ntchito. Pakadali pano, pafupifupi magawo onse a Linux omwe akupitiliza kuthandizira machitidwe a 32-bit x86 asintha kupanga kernel ndi njira ya X86_PAE, yomwe imafuna thandizo la "cmpxchg8b".
Malingana ndi Linus, kuchokera kumbali ya chithandizo cha kernel, ma processor a i486 ataya kufunikira kwawo, ngakhale kuti akupezekabe m'moyo watsiku ndi tsiku. Panthawi ina, mapurosesa amakhala malo owonetsera zakale ndipo ndizotheka kuti athe kudutsa ndi "museum" cores. Ogwiritsa ntchito omwe adakali ndi machitidwe omwe ali ndi ma processor a i486 azitha kugwiritsa ntchito LTS kernel kutulutsa, zomwe zidzathandizidwa kwa zaka zambiri zikubwerazi.
Kusiya kuthandizira kwa ma i486 apamwamba sikungakhudze ma processor a Quark ophatikizidwa a Intel, omwe, ngakhale ali m'gulu la i486, amaphatikizanso malangizo owonjezera a m'badwo wa Pentium, kuphatikiza "cmpxchg8b". Zomwezo zikugwiranso ntchito kwa mapurosesa a Vortex86DX. Thandizo la mapurosesa a i386 linathetsedwa mu kernel zaka 10 zapitazo.
Source: opennet.ru