{"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 terminare il supporto per le CPU i486 nel kernel Linux.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Durante la discussione sulle soluzioni alternative per i processori x86 che non supportano l'istruzione \u00abcmpxchg8b\u00bb, Linus Torvalds ha dichiarato che potrebbe essere giunto il momento di rendere obbligatoria la presenza di tale istruzione per il funzionamento del kernel e di abbandonare il supporto per i processori i486 che non la supportano, invece di cercare di emulare il funzionamento di questa istruzione su processori che ormai non sono pi\u00f9 utilizzati. Attualmente, quasi tutte le distribuzioni Linux che continuano a supportare sistemi x86 a 32 bit sono passate a una build del kernel con l'opzione X86_PAE, che richiede il supporto per \u00abcmpxchg8b\u00bb.      <\/p>\n<p>Secondo Linus, dal punto di vista del supporto nel kernel, i processori i486 hanno perso la loro rilevanza, nonostante siano ancora presenti in alcuni ambienti. A un certo punto, i processori diventano pezzi da museo e per loro \u00e8 possibile utilizzare kernel 'museali'. Gli utenti che hanno ancora sistemi con processori i486 potranno utilizzare versioni LTS del kernel, che saranno supportate ancora per molti anni.      <\/p>\n<p>La cessazione del supporto per i classici i486 non influenzer\u00e0 i processori integrati Quark prodotti da Intel, che, pur appartenendo alla classe i486, includono istruzioni aggiuntive proprie della generazione Pentium, tra cui \u00abcmpxchg8b\u00bb. Lo stesso vale per i processori Vortex86DX. Il supporto per i processori i386 \u00e8 stato interrotto nel kernel dieci 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 5.0.0.1 - 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