{"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\/da\/blog\/news\/linus-torvalds-predlozhil-prekratit-podderzhku-cpu-i486-v-yadre-linux","title":{"rendered":"Linus Torvalds foreslog at oph\u00f8re med underst\u00f8ttelsen af CPU i486 i Linux-kernen.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

I forbindelse med diskussionen om alternative metoder til at arbejde p\u00e5 x86-processorer, der ikke underst\u00f8tter instruktionen «cmpxchg8b», sagde Linus Torvalds, at det m\u00e5ske er tid til at erkl\u00e6re, at denne instruktion er obligatorisk for kerneoperationer og slippe st\u00f8tte til i486-processorer, der ikke underst\u00f8tter «cmpxchg8b», i stedet for at fors\u00f8ge at emulere arbejdet med denne instruktion p\u00e5 processorer, som ingen l\u00e6ngere bruger. I \u00f8jeblikket er n\u00e6sten alle Linux-distributioner, der forts\u00e6tter med at underst\u00f8tte 32-bit x86-systemer, overg\u00e5et til at bygge kernen med X86_PAE-muligheden, som kr\u00e6ver st\u00f8tte til «cmpxchg8b». <\/p>\n

If\u00f8lge Linus har i486-processorer mistet relevans set i lyset af kerneunderst\u00f8ttelse, selvom de stadig findes. P\u00e5 et bestemt tidspunkt bliver processorer til museumseffekter, og man kan fint klare sig med 'museum' kerner. Brugere, der har systemer med i486-processorer, vil kunne bruge LTS-udgivelser af kernen, som vil blive st\u00f8ttet i mange \u00e5r fremover. <\/p>\n

Oph\u00e6velsen af st\u00f8tten til klassiske i486 vil ikke p\u00e5virke de indbyggede processorer Quark, der blev fremstillet af Intel, som selvom de h\u00f8rer til i486-klassen, inkluderer ekstra instruktioner, der er karakteristiske for Pentium-generationen, herunder «cmpxchg8b». Det samme g\u00e6lder for Vortex86DX-processorerne. St\u00f8tten til i386-processorer blev stoppet i kernen for 10 \u00e5r siden.
\n
Kilde: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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\u043d\u0430\u0441\u0442\u043e\u044f\u0449\u0435\u0435 \u0432\u0440\u0435\u043c\u044f […]<\/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\n\t\n\t\n\t\n\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\t\t\n\n","aioseo_head_json":{"title":"\ud83e\udd47Linus Torvalds foreslog at oph\u00f8re med underst\u00f8ttelsen af CPU i486 i Linux-kernen | ProHoster","description":"Under dr\u00f8ftelsen af omveje til at arbejde p\u00e5 x86-processorer, der ikke underst\u00f8tter instruktionen 'cmpxchg8b', sagde Linus Torvalds, at det muligvis er tid til at erkl\u00e6re tilstedev\u00e6relsen af denne 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