{"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\/cs\/blog\/news\/linus-torvalds-predlozhil-prekratit-podderzhku-cpu-i486-v-yadre-linux","title":{"rendered":"Linus Torvalds navrhl ukon\u010den\u00ed podpory CPU i486 v j\u00e1d\u0159e Linux","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

B\u011bhem diskuse o alternativn\u00edch zp\u016fsobech pr\u00e1ce na procesorech x86, kter\u00e9 nepodporuj\u00ed instrukci \u201ecmpxchg8b\u201c, Linus Torvalds uvedl, \u017ee mo\u017en\u00e1 nastal \u010das prohl\u00e1sit tuto instrukci za povinnou pro pr\u00e1ci j\u00e1dra a vzd\u00e1t se podpory procesor\u016f i486, kter\u00e9 \u201ecmpxchg8b\u201c nepodporuj\u00ed, m\u00edsto pokusu o emulaci t\u00e9to instrukce na procesorech, kter\u00e9 u\u017e nikdo pou\u017e\u00edv\u00e1. V sou\u010dasnosti t\u00e9m\u011b\u0159 v\u0161echny distribuce Linuxu, kter\u00e9 pokra\u010duj\u00ed v podpo\u0159e 32bitov\u00fdch syst\u00e9m\u016f x86, p\u0159e\u0161ly na sestaven\u00ed j\u00e1dra s volbou X86_PAE, kter\u00e1 vy\u017eaduje podporu \u201ecmpxchg8b\u201c. <\/p>\n

Podle Linusa z pohledu podpory v j\u00e1d\u0159e ztratily procesory i486 svou relevanci, i kdy\u017e se st\u00e1le vyskytuj\u00ed v ob\u011bhu. V ur\u010dit\u00e9m okam\u017eiku se procesory st\u00e1vaj\u00ed muze\u00e1ln\u00edmi expon\u00e1ty a pro n\u011b je zcela mo\u017en\u00e9 se obej\u00edt s \u201emuze\u00e1ln\u00edmi\u201c j\u00e1dry. U\u017eivatele, kte\u0159\u00ed maj\u00ed syst\u00e9my s procesory i486, budou moci pou\u017e\u00edvat LTS verze j\u00e1dra, kter\u00e9 budou podporov\u00e1ny je\u0161t\u011b mnoho let. <\/p>\n

Ukon\u010den\u00ed podpory klasick\u00fdch i486 se net\u00fdk\u00e1 integrovan\u00fdch procesor\u016f Quark vyr\u00e1b\u011bn\u00fdch spole\u010dnost\u00ed Intel, kter\u00e9 sice pat\u0159\u00ed do t\u0159\u00eddy i486, ale zahrnuj\u00ed dodate\u010dn\u00e9 instrukce vlastn\u00ed generaci Pentium, v\u010detn\u011b \u201ecmpxchg8b\u201c. Tot\u00e9\u017e plat\u00ed pro procesory Vortex86DX. Podpora procesor\u016f i386 byla v j\u00e1d\u0159e ukon\u010dena p\u0159ed 10 lety.
\n
Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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p\u0159\u00edtomnost t\u00e9to instrukce za nezbytnou pro fungov\u00e1n\u00ed j\u00e1dra.","canonical_url":"https:\/\/prohoster.info\/cs\/blog\/news\/linus-torvalds-predlozhil-prekratit-podderzhku-cpu-i486-v-yadre-linux","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"cs_CZ","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u041b\u0438\u043d\u0443\u0441 \u0422\u043e\u0440\u0432\u0430\u043b\u044c\u0434\u0441 \u043f\u0440\u0435\u0434\u043b\u043e\u0436\u0438\u043b \u043f\u0440\u0435\u043a\u0440\u0430\u0442\u0438\u0442\u044c \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0443 CPU i486 \u0432 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