{"id":105371,"date":"2022-10-24T15:37:02","date_gmt":"2022-10-24T13:37:02","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/linus-torvalds-predlozhil-prekratit-podderzhku-cpu-i486-v-yadre-linux"},"modified":"2022-10-24T15:37:02","modified_gmt":"2022-10-24T13:37:02","slug":"linus-torvalds-predlozhil-prekratit-podderzhku-cpu-i486-v-yadre-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/linus-torvalds-predlozhil-prekratit-podderzhku-cpu-i486-v-yadre-linux","title":{"rendered":"Linus Torvalds ha proposto di interrompere il supporto per le CPU i486 nel kernel Linux.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Durante la discussione sui modi alternativi di lavorare su processori x86 che non supportano l'istruzione &#171;cmpxchg8b&#187;, Linus Torvalds ha dichiarato che potrebbe essere giunto il momento di rendere obbligatoria la presenza di tale istruzione per il funzionamento del kernel e rinunciare al supporto per i processori i486 che non la supportano, invece di cercare di emulare il funzionamento di questa istruzione su processori che ormai non vengono pi\u00f9 utilizzati. Attualmente quasi tutte le distribuzioni Linux che continuano a supportare i sistemi x86 a 32 bit hanno adottato la build del kernel con l'opzione X86_PAE, che richiede il supporto di &#171;cmpxchg8b&#187;.      <\/p>\n<p>Secondo Linus, in termini di supporto nel kernel, i processori i486 hanno perso rilevanza, anche se si trovano ancora in uso. A un certo punto, i processori diventano reperti museali e per loro si pu\u00f2 tranquillamente optare per kernel 'museali'. Gli utenti che hanno ancora sistemi con processori i486 potranno utilizzare le versioni LTS del kernel, che saranno supportate per molti anni a venire.      <\/p>\n<p>La cessazione del supporto per i classici i486 non influenzer\u00e0 i processori integrati Quark prodotti da Intel, che, sebbene appartenenti alla classe i486, includono istruzioni aggiuntive tipiche della generazione Pentium, tra cui &#171;cmpxchg8b&#187;. Lo stesso vale per i processori Vortex86DX. Il supporto per i processori i386 \u00e8 stato interrotto nel kernel 10 anni fa.<br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=57964\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u0412 \u0445\u043e\u0434\u0435 \u043e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u044f \u043e\u0431\u0445\u043e\u0434\u043d\u044b\u0445 \u043f\u0443\u0442\u0435\u0439 \u0440\u0430\u0431\u043e\u0442\u044b \u043d\u0430 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u0445 x86, \u043d\u0435 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044e\u0449\u0438\u0445 \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044e &#171;cmpxchg8b&#187;, \u041b\u0438\u043d\u0443\u0441 \u0422\u043e\u0440\u0432\u0430\u043b\u044c\u0434\u0441 \u0437\u0430\u044f\u0432\u0438\u043b, \u0447\u0442\u043e \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e \u043d\u0430\u0441\u0442\u0430\u043b\u043e \u0432\u0440\u0435\u043c\u044f \u043e\u0431\u044a\u044f\u0432\u0438\u0442\u044c \u043d\u0430\u043b\u0438\u0447\u0438\u0435 \u0434\u0430\u043d\u043d\u043e\u0439 \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0438 \u043e\u0431\u044f\u0437\u0430\u0442\u0435\u043b\u044c\u043d\u044b\u043c \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u044f\u0434\u0440\u0430 \u0438 \u043e\u0442\u043a\u0430\u0437\u0430\u0442\u044c\u0441\u044f \u043e\u0442 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 i486, \u043d\u0435 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044e\u0449\u0438\u0445 &#171;cmpxchg8b&#187;, \u0432\u043c\u0435\u0441\u0442\u043e \u0442\u043e\u0433\u043e \u0447\u0442\u043e\u0431\u044b \u043f\u044b\u0442\u0430\u0442\u044c\u0441\u044f \u044d\u043c\u0443\u043b\u0438\u0440\u043e\u0432\u0430\u0442\u044c \u0440\u0430\u0431\u043e\u0442\u0443 \u0434\u0430\u043d\u043d\u043e\u0439 \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0438 \u043d\u0430 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u0445, \u043a\u043e\u0442\u043e\u0440\u044b\u0435 \u0443\u0436\u0435 \u043d\u0438\u043a\u0442\u043e \u043d\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442. \u0412 \u043d\u0430\u0441\u0442\u043e\u044f\u0449\u0435\u0435 \u0432\u0440\u0435\u043c\u044f [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[702],"tags":[],"class_list":["post-105371","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - 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