{"id":84726,"date":"2020-06-10T13:42:19","date_gmt":"2020-06-10T11:42:19","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/mikroyadro-sel4-matematicheski-verificzirovano-dlya-arhitektury-risc-v"},"modified":"2020-06-10T13:42:19","modified_gmt":"2020-06-10T11:42:19","slug":"mikroyadro-sel4-matematicheski-verificzirovano-dlya-arhitektury-risc-v","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/mikroyadro-sel4-matematicheski-verificzirovano-dlya-arhitektury-risc-v","title":{"rendered":"Mikrojaotuse seL4 matemaatiliselt kinnitatud RISC-V arhitektuurile","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>RISC-V Fondi Organisatsioon <noindex><a rel=\"nofollow\" href=\"https:\/\/riscv.org\/2020\/06\/sel4-is-verified-on-risc-v\/\">teatas<\/a><\/noindex> mikrojaotuse verifikatsioonist <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/seL4\/seL4\">seL4<\/a><\/noindex>  RISC-V k\u00e4skude komplekti arhitektuuriga s\u00fcsteemides. Verifikatsioon piirdub <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=23011\">matemaatilise t\u00f5estusega<\/a><\/noindex> seL4 t\u00f6\u00f6kindluse kohta, mis t\u00f5endab t\u00e4ielikku vastavust vormingus spetsifikatsioonidele. T\u00f6\u00f6kindluse t\u00f5estamine <noindex><a rel=\"nofollow\" href=\"https:\/\/riscv.org\/2020\/06\/sel4-operating-system-protects-critical-systems-on-risc-v-architecture-from-cyber-attacks\/\">lubab kasutada<\/a><\/noindex> seL4 RISC-V RV64 protsessorite baasil olulistes s\u00fcsteemides, mis n\u00f5uavad k\u00f5rget t\u00f6\u00f6kindlust ja tagavad t\u00f5rgete puudumise. seL4 tuuma peal t\u00f6\u00f6tavate tarkvarade arendajad v\u00f5ivad olla t\u00e4iesti kindlad, et kui \u00fche osa s\u00fcsteemist tekib t\u00f5rge, ei levi see \u00fclej\u00e4\u00e4nud s\u00fcsteemi, sealhulgas selle kriitilistesse osadesse. <\/p>\n<p>Alguses oli mikrokiip seL4 verifitseeritud 32-bitiste ARM-protsessorite jaoks ja hiljem 64-bitiste x86-protsessorite jaoks. Tulemuseks on see, et avatud RISC-V riistvara arhitektuuri ja avatud mikrokiibi seL4 kombinatsioon v\u00f5imaldab saavutada uue taseme turvalisust, kuna tulevikus on v\u00f5imalik t\u00e4ielikult verifitseerida ka riistvaralisi komponente, mida ei saa saavutada erakontrolli all olevate riistvara arhitektuuride puhul. <\/p>\n<p>seL4 valideerimisel eeldatakse, et riistvara t\u00f6\u00f6tab nagu on v\u00e4idetud ja spetsifikatsioon kirjeldab s\u00fcsteemi k\u00e4itumist t\u00e4ielikult. Kuid reaalsuses ei ole riistvara vigadest vabastatud, nagu t\u00f5endavad sageli esinevad probleemid spekuleeriva instruktsioonide t\u00e4itmise mehhanismis. Avatud riistvaraplatvormid lihtsustavad turvalisuse muutuste integreerimist \u2014 n\u00e4iteks k\u00f5igi v\u00f5imalike lekkanalite sulgemiseks, kus probleemist vabanemine riistvara tasandil on palju t\u00f5husam kui t\u00f6\u00f6arvutusega ringide leidmine.<\/p>\n<p>Tuletame meelde, et seL4 arhitektuur <noindex><a rel=\"nofollow\" href=\"http:\/\/sel4.systems\/FAQ\/\">on t\u00e4helepanuv\u00e4\u00e4rne<\/a><\/noindex> tuumade eraldamine mikrokernelis, et hallata ressursse kasutajatasemel ja rakendada sellistele ressurssidele samu juurdep\u00e4\u00e4sukontrolli meetodeid nagu kasutajaressurssidele. Mikrokernel ei paku valmis k\u00f5rgtaseme abstraktsioone failide, protsesside, v\u00f5rguside jne haldamiseks. Selle asemel annab see vaid minimaalsed mehhanismid f\u00fc\u00fcsilise aadressiruumi, katkemiste ja protsessori ressursside haldamiseks. K\u00f5rgtaseme abstraktsioonid ja draiverid riistvaraga suhtlemiseks rakendatakse eraldi mikrokernelitest, kasutajatase \u00fclesande vormis. Selliste \u00fclesannete juurdep\u00e4\u00e4s mikrokernelis olevatele ressurssidele korraldatakse reeglite m\u00e4\u00e4ramise kaudu.<\/p>\n<p>RISC-V pakub avatud ja paindlikku masinakeelte s\u00fcsteemi, mis v\u00f5imaldab luua mikropersetoreid igasuguste rakenduste jaoks, ilma litsentsitasudeta ja kasutustingimusteta. RISC-V v\u00f5imaldab luua t\u00e4ielikult avatud SoC ja protsessoreid. Praegu on RISC-V spetsifikatsiooni alusel erinevad ettev\u00f5tted ja kogukonnad v\u00e4lja t\u00f6\u00f6tanud mitmesuguseid avatud litsentse (BSD, MIT, Apache 2.0). <noindex><a rel=\"nofollow\" href=\"https:\/\/riscv.org\/risc-v-cores\/\">arendatakse<\/a><\/noindex> mitmeid tosinad mikropersetoreid, SoC ja juba tootmisse l\u00e4inud kiipe. RISC-V tugi on olemas alates Glibc 2.27, binutils 2.30, gcc 7 ja Linuxi tuuma 4.15 v\u00e4ljalasetest.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Allikas: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53129\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u044f RISC-V Foundation \u0441\u043e\u043e\u0431\u0449\u0438\u043b\u0430 \u043e \u0432\u0435\u0440\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0440\u0430\u0431\u043e\u0442\u044b \u043c\u0438\u043a\u0440\u043e\u044f\u0434\u0440\u0430 seL4 \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0441 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u043e\u0439 \u043d\u0430\u0431\u043e\u0440\u0430 \u043a\u043e\u043c\u0430\u043d\u0434 RISC-V. \u0412\u0435\u0440\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f \u0441\u0432\u043e\u0434\u0438\u0442\u0441\u044f \u043a \u043c\u0430\u0442\u0435\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u043c\u0443 \u0434\u043e\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044c\u0441\u0442\u0432\u0443 \u043d\u0430\u0434\u0451\u0436\u043d\u043e\u0441\u0442\u0438 \u0440\u0430\u0431\u043e\u0442\u044b seL4, \u043a\u043e\u0442\u043e\u0440\u043e\u0435 \u0441\u0432\u0438\u0434\u0435\u0442\u0435\u043b\u044c\u0441\u0442\u0432\u0443\u0435\u0442 \u043e \u043f\u043e\u043b\u043d\u043e\u043c \u0441\u043e\u043e\u0442\u0432\u0435\u0442\u0441\u0442\u0432\u0438\u0438 \u0437\u0430\u0434\u0430\u043d\u043d\u044b\u043c \u043d\u0430 \u0444\u043e\u0440\u043c\u0430\u043b\u044c\u043d\u043e\u043c \u044f\u0437\u044b\u043a\u0435 \u0441\u043f\u0435\u0446\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f\u043c. \u0414\u043e\u043a\u0430\u0437\u0430\u0442\u0435\u043b\u044c\u0441\u0442\u0432\u043e \u043d\u0430\u0434\u0451\u0436\u043d\u043e\u0441\u0442\u0438 \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u044c seL4 \u0432 \u043a\u0440\u0438\u0442\u0438\u0447\u0435\u0441\u043a\u0438 \u0432\u0430\u0436\u043d\u044b\u0445 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u043d\u0430 \u0431\u0430\u0437\u0435 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043e\u0432 RISC-V RV64, \u0442\u0440\u0435\u0431\u0443\u044e\u0449\u0438\u0445 \u043f\u043e\u0432\u044b\u0448\u0435\u043d\u043d\u043e\u0433\u043e \u0443\u0440\u043e\u0432\u043d\u044f \u043d\u0430\u0434\u0451\u0436\u043d\u043e\u0441\u0442\u0438 \u0438 \u0433\u0430\u0440\u0430\u043d\u0442\u0438\u0440\u0443\u044e\u0449\u0438\u0445 \u043e\u0442\u0441\u0443\u0442\u0441\u0442\u0432\u0438\u0435 [&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-84726","post","type-post","status-publish","format-standard","hentry","category-novosti-interneta"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 4.9.10 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u044f RISC-V Foundation \u0441\u043e\u043e\u0431\u0449\u0438\u043b\u0430 \u043e \u0432\u0435\u0440\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0440\u0430\u0431\u043e\u0442\u044b \u043c\u0438\u043a\u0440\u043e\u044f\u0434\u0440\u0430 seL4 \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0441 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u043e\u0439 \u043d\u0430\u0431\u043e\u0440\u0430 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\u0432\u0435\u0440\u0438\u0444\u0438\u0446\u0438\u0440\u043e\u0432\u0430\u043d\u043e \u0434\u043b\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b RISC-V | ProHoster\" \/>\n\t\t<meta property=\"og:description\" content=\"\u041e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u044f RISC-V Foundation \u0441\u043e\u043e\u0431\u0449\u0438\u043b\u0430 \u043e \u0432\u0435\u0440\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u0438 \u0440\u0430\u0431\u043e\u0442\u044b \u043c\u0438\u043a\u0440\u043e\u044f\u0434\u0440\u0430 seL4 \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 \u0441 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u043e\u0439 \u043d\u0430\u0431\u043e\u0440\u0430 \u043a\u043e\u043c\u0430\u043d\u0434 RISC-V. \u0412\u0435\u0440\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f \u0441\u0432\u043e\u0434\u0438\u0442\u0441\u044f \u043a \u043c\u0430\u0442\u0435\u043c\u0430\u0442\u0438\u0447\u0435\u0441\u043a\u043e\u043c\u0443 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Verifitseerimine seisneb seL4 usaldusv\u00e4\u00e4rsuse matemaatilises t\u00f5estamises, mis kinnitab selle t\u00e4ielikku vastavust formaalses keeles esitatud spetsifikatsioonidele. 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