Ngelixa sixoxa ngeendlela zokusebenza zeeprosesa ze-x86 ezingawuxhasiyo umyalelo we-"cmpxchg8b", uLinus Torvalds uthe inokuba lixesha lokwenza ubukho balo myalelo bunyanzeliswe ukuba ikernel isebenze kwaye ilahle inkxaso yeeprosesa ze-i486 ezingaxhasi "cmpxchg8b" endaweni yokuzama ukulinganisa ukusebenza kwalo myalelo kwiprosesa ekungekho mntu usayisebenzisayo kwakhona. Okwangoku, phantse zonke izinikezelo zeLinux eziqhubeka nokuxhasa iinkqubo ze-32-bit x86 ziye zatshintshela ekwakheni i-kernel ngokhetho lwe-X86_PAE, olufuna inkxaso ye-"cmpxchg8b".
Ngokutsho kukaLinus, ukusuka kwinqanaba lenkxaso ye-kernel, iiprosesa ze-i486 ziye zalahlekelwa ukufaneleka kwazo, nangona zisafumaneka kwimpilo yemihla ngemihla. Ngexesha elithile, abalungiseleli baba yimiboniso yemyuziyam kwaye kunokwenzeka ukuba bagqithe ngeecores "zemyuziyam". Abasebenzisi abaseneenkqubo ezine-i486 processors baya kuba nakho ukusebenzisa ukukhutshwa kwe-LTS kernel, eya kuxhaswa iminyaka emininzi ezayo.
Ukupheliswa kwenkxaso ye-i486s yakudala akuyi kuchaphazela i-Intel's embedded Quark processors, leyo, nangona ikwiklasi ye-i486, iquka imiyalelo eyongezelelweyo yeempawu zesizukulwana sePentium, kuquka "cmpxchg8b". Oku kuyasebenza nakwiVortex86DX processors. Inkxaso ye-i386 processors yayekwa kwi-kernel kwiminyaka eyi-10 eyadlulayo.
umthombo: opennet.ru