{"id":124015,"date":"2025-05-04T09:05:07","date_gmt":"2025-05-04T07:05:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/razrabotchiki-yadra-linux-na-puti-k-udaleniyu-podderzhki-proczessorov-i486"},"modified":"2025-05-04T09:05:07","modified_gmt":"2025-05-04T07:05:07","slug":"razrabotchiki-yadra-linux-na-puti-k-udaleniyu-podderzhki-proczessorov-i486","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/news\/razrabotchiki-yadra-linux-na-puti-k-udaleniyu-podderzhki-proczessorov-i486","title":{"rendered":"Linuxi tuumaarendajad on teel i486 protsessorite toe eemaldamise suunas","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Ingo Molnar, x86 arhitektuuri, lukustusmehhanismide ja Linuxi kernelis olevate \u00fclesannete ajastamise hoidja, esitas aruteluks pat\u0161ide kogumi, mis eemaldab kernelist toetuse 486 (M486, M486SX, AMD ELAN) ja algse seeria 586 protsessorite jaoks. Kerneli ettepanek on s\u00e4ilitada ainult v\u00f5imalus t\u00f6\u00f6tada x86 protsessoritega, mis toetavad CX8 k\u00e4sku (CMPXCHG8B) ja TSC registreid (Time Stamp Counter), mis ilmusid CPU Pentiumis. <\/p>\n

Tuleb m\u00e4rkida, et 486 CPU toetamiseks peab kernelis olema kood, mis emuleerib CX8 (v\u00f5rdle ja vaheta 8 bitti) ja TSC (CPU ts\u00fckli loendur, mida kasutatakse \u00fclesannete ajastamises) tehinguid. Selline kood keeruka kernelis, muudab hooldamise keeruliseks ja aeg-ajalt muutub probleemide allikaks, mille lahendamine v\u00f5tab ikka arendajate aega. Toetuse l\u00f5petamine 486 eemaldab kernelist 14104 koodireaga, mis lihtsustab oluliselt m\u00f5ningaid kerneli funktsioone CX8 ja TSC ehitustasandite eemalviimisega ning vabastab math-emu raamatukogust, mis emuleerib FPU-d. <\/p>\n

\u00dche p\u00e4eva jooksul enne pat\u0161ide avaldamist t\u00f5statas Linus Torvalds, arutades j\u00e4rgmise probleemi \u00fcle, mis ilmneb CX8 emulatsiooni k\u00e4igus, k\u00fcsimuse 486 toetuse eemaldamise otstarbekusest. Linus usub, et on aeg loobuda 486 CPU toest ja ei n\u00e4e p\u00f5hjust, miks j\u00e4tkata arendajate aja kulutamist nendega seotud probleemide lahendamiseks. 386 protsessorite tugi eemaldati kernelist 2012. aastal. Arutelu osalistel on arvamus, et n\u00fc\u00fcd on aeg 486 CPU toe eemaldamiseks. 2022. aasta oktoobris esitas Linus juba sarnase ettepaneku, kuid see ei saanud arengut. <\/p>\n

471 s\u00fcsteemides, mis on endiselt kasutusel, on 486 jaoks sobivad Linuxi kernlid praktiliselt kasutamata. Spetsialiseeritud 486 protsessoritest m\u00f5eldud versioonid, nagu Intel Quark, toetavad CX8 ja TSC ning nende muutmine ei puuduta. Vanad originaalid 486 CPU-d j\u00e4tkavad tavaliselt kasutamist vananenud jaotustes, mis pakuvad vanemaid Linuxi kerneli versioone. T\u00e4nap\u00e4eva Linuxi jaotustel on ammu l\u00f5petatud 32-bitiste x86 s\u00fcsteemide tugi v\u00f5i on nad l\u00e4inud \u00fcle X86_PAE kasutamisele, mis n\u00f5uab CX8 toetamist.
\n
Allikas: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u0418\u043d\u0433\u043e \u041c\u043e\u043b\u043d\u0430\u0440 (Ingo Molnar), \u043c\u044d\u0439\u043d\u0442\u0435\u0439\u043d\u0435\u0440 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b x86, \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430 \u0431\u043b\u043e\u043a\u0438\u0440\u043e\u0432\u043e\u043a \u0438 \u043f\u043b\u0430\u043d\u0438\u0440\u043e\u0432\u0449\u0438\u043a\u0430 \u0437\u0430\u0434\u0430\u0447 \u0432 \u044f\u0434\u0440\u0435 Linux, \u0432\u044b\u0441\u0442\u0430\u0432\u0438\u043b \u043d\u0430 \u043e\u0431\u0441\u0443\u0436\u0434\u0435\u043d\u0438\u0435 \u043d\u0430\u0431\u043e\u0440 \u043f\u0430\u0442\u0447\u0435\u0439, \u0443\u0434\u0430\u043b\u044f\u044e\u0449\u0438\u0445 \u0438\u0437 \u044f\u0434\u0440\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 486 (M486, M486SX, AMD ELAN) \u0438 \u043d\u0430\u0447\u0430\u043b\u044c\u043d\u044b\u0445 \u0441\u0435\u0440\u0438\u0439 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 586. \u0412 \u044f\u0434\u0440\u0435 \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u0435\u0442\u0441\u044f \u043e\u0441\u0442\u0430\u0432\u0438\u0442\u044c \u0442\u043e\u043b\u044c\u043a\u043e \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0440\u0430\u0431\u043e\u0442\u044b \u0441 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u043c\u0438 x86, \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u044e\u0449\u0438\u043c\u0438 \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u044e CX8 (CMPXCHG8B) \u0438 \u0440\u0435\u0433\u0438\u0441\u0442\u0440 TSC (Time Stamp Counter), […]<\/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-124015","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\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\udd47Linuxi kerneli arendajad liiguvad i486 protsessorite toe eemaldamise suunas | ProHoster","description":"Ingo Molnar, x86 arhitektuuri, lukustusmehhanismi ja Linuxi kernelis \u00fclesannete planeerija hoidja, esitas arutamiseks komplekti pat\u0161e, mis eemaldavad kernelist 486 protsessorite (M486, M486SX, AMD ELAN) 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