{"id":90687,"date":"2020-08-04T13:42:33","date_gmt":"2020-08-04T11:42:33","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/predlozhenie-po-blokirovke-drajverov-prosloek-predostavlyayushhih-dostup-k-gpl-vyzovam-yadra-linux"},"modified":"2020-08-04T13:42:33","modified_gmt":"2020-08-04T11:42:33","slug":"predlozhenie-po-blokirovke-drajverov-prosloek-predostavlyayushhih-dostup-k-gpl-vyzovam-yadra-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/predlozhenie-po-blokirovke-drajverov-prosloek-predostavlyayushhih-dostup-k-gpl-vyzovam-yadra-linux","title":{"rendered":"Forslag til blokering af driverlag, der giver adgang til GPL-kald fra Linux-kernen","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Christoph Hellwig, en kendt Linux-kernudvikler, der tidligere var medlem af den tekniske ledelse i Linux Foundation og var sags\u00f8ger i et relateret GPL-retsligt anliggende retsforhold<\/a><\/noindex> mod VMware, et h\u00e5ndskrevet patch til rettelsen.<\/a><\/noindex> sk\u00e6rpe beskyttelsen mod binding af propriet\u00e6re drivere med komponenter i Linux-kernen, der kun eksporteres for GPL-moduler. For at omg\u00e5 begr\u00e6nsningen p\u00e5 eksport af GPL-symboler bruger producenter af propriet\u00e6re drivere et mellemmodul, hvis kode er \u00e5bent og distribueres under GPLv2, men funktionerne reduceres til at overs\u00e6tte adgangen af den propriet\u00e6re driver til n\u00f8dvendige API'er i kernen, som er forbudt for direkte brug fra propriet\u00e6r kode.<\/p>\n

For at blokere en s\u00e5dan fremgangsm\u00e5de anbefaler Christoph Hellwig har forberedt<\/a><\/noindex> til Linux-kernen patches, der sikrer arv af flag relateret til eksport af GPL-symboler. Forslaget g\u00e5r ud p\u00e5 at arve flaget TAINT_PROPRIETARY_MODULE i alle moduler, der importer symboler fra moduler med dette flag. Dermed, hvis et GPL-lagermodul pr\u00f8ver at importere symboler fra et ikke-GPL-modul, s\u00e5 vil GPL-modulet arve m\u00e6rket TAINT_PROPRIETARY_MODULE og ikke kunne f\u00e5 adgang til kernekomponenter, der kun er tilg\u00e6ngelige for moduler under GPL-licens, selvom modulet tidligere har importeret symboler fra kategorien \u00abgplonly\u00bb. <\/p>\n

Under diskussionen var der ogs\u00e5 af den opfattelse<\/a><\/noindex> forslag til tilbagekobling \u2014 hvis et modul importer symboler EXPORT_SYMBOL_GPL, m\u00e5 alle symboler, der eksporteres af dette modul, ikke importeres af moduler, der tydeligt ikke erkl\u00e6rer kompatibilitet med GPL. Det vil sige, at hvis et modul importer symboler EXPORT_SYMBOL_GPL, s\u00e5 skal alle dens eksportsymboler behandles som EXPORT_SYMBOL_GPL. Christoph Helwig skrev<\/a><\/noindex>, at han er 100% enig i dette forslag, men en s\u00e5dan \u00e6ndring vil ikke blive godkendt af Linus Torvalds, da det vil g\u00f8re det umuligt for propriet\u00e6re drivere at f\u00e5 adgang til det meste af kernens undersystemer, fordi der i udviklingen af drivere indg\u00e5r grundl\u00e6ggende symboler, der eksporteres under GPL.<\/p>\n

\u00c6ndringen blev foresl\u00e5et som svar p\u00e5 publicering<\/a><\/noindex> en ingeni\u00f8r fra Facebooks r\u00e6kke af patches med implementering af det nye netgpu-undersystem, der muligg\u00f8r direkte datadeling (DMA
\nzero-copy) mellem netv\u00e6rkskortet og GPU'en, mens protokolbehandlingen udf\u00f8res af CPU'en. Utilfredshed<\/a><\/noindex> blandt udviklerne blev v\u00e6kket tilg\u00e6ngelighed<\/a><\/noindex> implementering kun for propriet\u00e6re NVIDIA-drivere via de GPL-lag, der leveres af disse drivere. Som svar p\u00e5 , da termen replica er mere anvendelig i DBMS og fordrejer betydningen i konteksten af lydsystemet. Som et resultat blev der<\/a><\/noindex> patchforfatteren at<\/a><\/noindex>, at subsystemet ikke er knyttet til NVIDIA, og at dets support ogs\u00e5 kan v\u00e6re tilg\u00e6ngelig for programmeringsgr\u00e6nseflader til GPU'er fra AMD og Intel. I sidste ende blev promoveringen af netgpu i kernen anerkendt som umulig, indtil der kom fungerende support baseret p\u00e5 \u00e5bne drivere som AMDGPU, Intel i915 eller Nouveau. <\/p>\n

<\/a><\/noindex><\/p>\n

Kilde: opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

\u041a\u0440\u0438\u0441\u0442\u043e\u0444 \u0425\u0435\u043b\u0432\u0438\u0433 (Christoph Hellwig), \u0438\u0437\u0432\u0435\u0441\u0442\u043d\u044b\u0439 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a \u044f\u0434\u0440\u0430 Linux, \u0432 \u0441\u0432\u043e\u0451 \u0432\u0440\u0435\u043c\u044f \u0432\u0445\u043e\u0434\u0438\u0432\u0448\u0438\u0439 \u0432 \u0443\u043f\u0440\u0430\u0432\u043b\u044f\u044e\u0449\u0438\u0439 \u0442\u0435\u0445\u043d\u0438\u0447\u0435\u0441\u043a\u0438\u0439 \u043a\u043e\u043c\u0438\u0442\u0435\u0442 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 Linux Foundation \u0438 \u0432\u044b\u0441\u0442\u0443\u043f\u0430\u0432\u0448\u0438\u0439 \u0438\u0441\u0442\u0446\u043e\u043c \u0432 \u0441\u0432\u044f\u0437\u0430\u043d\u043d\u043e\u043c \u0441 GPL \u0441\u0443\u0434\u0435\u0431\u043d\u043e\u043c \u0440\u0430\u0437\u0431\u0438\u0440\u0430\u0442\u0435\u043b\u044c\u0441\u0442\u0432\u0435 \u0441 VMware, 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\u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u0438 […]<\/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-90687","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\udd47Tilbud om blokering af driver-lag, der giver adgang til GPL-opkald i Linux-kernen | ProHoster","description":"Christoph Hellwig, en kendt Linux-kernudvikler, der tidligere var medlem af den tekniske ledelse i Linux Foundation og var sags\u00f8ger i et relateret GPL-retsligt 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