{"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\/es\/blog\/news\/mikroyadro-sel4-matematicheski-verificzirovano-dlya-arhitektury-risc-v","title":{"rendered":"El microkernel seL4 ha sido verificado matem\u00e1ticamente para la arquitectura RISC-V","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>La organizaci\u00f3n RISC-V Foundation <noindex><a rel=\"nofollow\" href=\"https:\/\/riscv.org\/2020\/06\/sel4-is-verified-on-risc-v\/\">inform\u00f3<\/a><\/noindex> sobre la verificaci\u00f3n del funcionamiento del microkernel <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/seL4\/seL4\">seL4<\/a><\/noindex>  en sistemas con arquitectura de conjunto de instrucciones RISC-V. La verificaci\u00f3n consiste en <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=23011\">una prueba matem\u00e1tica<\/a><\/noindex> de la fiabilidad del funcionamiento de seL4, que demuestra la conformidad total con las especificaciones formales establecidas. La prueba de fiabilidad <noindex><a rel=\"nofollow\" href=\"https:\/\/riscv.org\/2020\/06\/sel4-operating-system-protects-critical-systems-on-risc-v-architecture-from-cyber-attacks\/\">permite utilizar<\/a><\/noindex> seL4 en sistemas cr\u00edticos basados en procesadores RISC-V RV64, que requieren un alto nivel de fiabilidad y garantizan la ausencia de fallos. Los desarrolladores de software que opera sobre el n\u00facleo seL4 pueden estar completamente seguros de que, en caso de fallo en una parte del sistema, este fallo no se propagar\u00e1 al resto del sistema y, en particular, a sus partes cr\u00edticas. <\/p>\n<p>Originalmente, el microkernel seL4 fue verificado para procesadores ARM de 32 bits, y posteriormente para procesadores x86 de 64 bits. Se destaca que la combinaci\u00f3n de la arquitectura de hardware abierto RISC-V con el microkernel abierto seL4 permitir\u00e1 alcanzar un nuevo nivel de seguridad, ya que los componentes de hardware tambi\u00e9n pueden ser completamente verificados en el futuro, algo que no es posible lograr con arquitecturas de hardware propietarias. <\/p>\n<p>Al verificar seL4, se asume que el hardware funciona como se declara y que la especificaci\u00f3n describe completamente el comportamiento del sistema, pero en la pr\u00e1ctica, el hardware no est\u00e1 libre de errores, lo que se demuestra bien por los problemas recurrentes que surgen en el mecanismo de ejecuci\u00f3n especulativa de instrucciones. Las plataformas de hardware abiertas facilitan la integraci\u00f3n de cambios relacionados con la seguridad, por ejemplo, para bloquear todos los posibles canales de fuga a trav\u00e9s de canales externos, donde es mucho m\u00e1s eficiente resolver el problema a nivel de hardware que intentar buscar soluciones alternativas a nivel de software.<\/p>\n<p>Recordemos que la arquitectura seL4 <noindex><a rel=\"nofollow\" href=\"http:\/\/sel4.systems\/FAQ\/\">es notable<\/a><\/noindex> la extracci\u00f3n de partes para la gesti\u00f3n de recursos del n\u00facleo en el espacio del usuario y la aplicaci\u00f3n de los mismos medios de control de acceso para estos recursos, como para los recursos del usuario. El micron\u00facleo no proporciona abstracciones de alto nivel listas para la gesti\u00f3n de archivos, procesos, conexiones de red, etc. En su lugar, proporciona solo mecanismos m\u00ednimos para gestionar el acceso al espacio de direcciones f\u00edsicas, interrupciones y recursos del procesador. Las abstracciones de alto nivel y los controladores para la interacci\u00f3n con el hardware se implementan por separado sobre el micron\u00facleo en forma de tareas que se ejecutan en el nivel del usuario. El acceso de estas tareas a los recursos del micron\u00facleo se organiza mediante la definici\u00f3n de reglas.<\/p>\n<p>RISC-V proporciona un sistema de instrucciones de m\u00e1quina abierto y flexible, que permite crear microprocesadores para diversas \u00e1reas de aplicaci\u00f3n, sin requerir tasas de licencia ni imponer condiciones sobre su uso. RISC-V permite la creaci\u00f3n de SoC y procesadores completamente abiertos. Actualmente, sobre la base de la especificaci\u00f3n RISC-V, diferentes empresas y comunidades est\u00e1n desarrollando varias licencias libres (BSD, MIT, Apache 2.0) <noindex><a rel=\"nofollow\" href=\"https:\/\/riscv.org\/risc-v-cores\/\">se desarrolla<\/a><\/noindex> decenas de variantes de n\u00facleos de microprocesadores, SoC y chips ya producidos. El soporte para RISC-V est\u00e1 presente desde las versiones Glibc 2.27, binutils 2.30, gcc 7 y el n\u00facleo de Linux 4.15.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fuente: <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-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - 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\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" 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