{"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\/pt\/blog\/news\/linus-torvalds-predlozhil-prekratit-podderzhku-cpu-i486-v-yadre-linux","title":{"rendered":"Linus Torvalds prop\u00f4s o fim do suporte ao CPU i486 no n\u00facleo Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Durante a discuss\u00e3o sobre alternativas de opera\u00e7\u00e3o em processadores x86 que n\u00e3o suportam a instru\u00e7\u00e3o &#171;cmpxchg8b&#187;, Linus Torvalds afirmou que talvez seja hora de declarar essa instru\u00e7\u00e3o como obrigat\u00f3ria para o funcionamento do n\u00facleo e abandonar o suporte a processadores i486 que n\u00e3o suportam &#171;cmpxchg8b&#187;, em vez de tentar emular essa instru\u00e7\u00e3o em processadores que j\u00e1 n\u00e3o s\u00e3o mais utilizados. Atualmente, quase todas as distribui\u00e7\u00f5es Linux que continuam a suportar sistemas x86 de 32 bits migraram para a constru\u00e7\u00e3o do n\u00facleo com a op\u00e7\u00e3o X86_PAE, que requer suporte a &#171;cmpxchg8b&#187;.      <\/p>\n<p>Na opini\u00e3o de Linus, do ponto de vista de suporte no n\u00facleo, os processadores i486 perderam relev\u00e2ncia, apesar de ainda estarem em uso. Em algum momento, os processadores se tornam itens de museu e para eles \u00e9 perfeitamente aceit\u00e1vel usar n\u00facleos 'musicais'. Usu\u00e1rios que ainda mant\u00e9m sistemas com processadores i486 poder\u00e3o usar vers\u00f5es LTS do n\u00facleo, que receber\u00e3o suporte por muitos anos.      <\/p>\n<p>A descontinua\u00e7\u00e3o do suporte aos cl\u00e1ssicos i486 n\u00e3o afetar\u00e1 os processadores embedded Quark lan\u00e7ados pela Intel, que, embora perten\u00e7am \u00e0 classe i486, incluem instru\u00e7\u00f5es adicionais t\u00edpicas da gera\u00e7\u00e3o Pentium, incluindo &#171;cmpxchg8b&#187;. O mesmo se aplica aos processadores Vortex86DX. O suporte aos processadores i386 foi interrompido no n\u00facleo h\u00e1 10 anos.<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 5.0.3 - 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