{"id":95507,"date":"2020-09-30T13:42:18","date_gmt":"2020-09-30T11:42:18","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/v-gipervizore-xen-realizovana-podderzhka-platy-raspberry-pi-4"},"modified":"2020-09-30T13:42:18","modified_gmt":"2020-09-30T11:42:18","slug":"v-gipervizore-xen-realizovana-podderzhka-platy-raspberry-pi-4","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/news\/v-gipervizore-xen-realizovana-podderzhka-platy-raspberry-pi-4","title":{"rendered":"N\u00eb hipervizorin Xen \u00ebsht\u00eb implementuar mb\u00ebshtetje p\u00ebr bordin Raspberry Pi 4","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Zhvilluesit e projektit Xen konfirmuan<\/a><\/noindex> p\u00ebr realizimin e mund\u00ebsis\u00eb p\u00ebr t\u00eb p\u00ebrdorur Xen Hypervisor n\u00eb pllakata Raspberry Pi 4. Adaptimi i Xen p\u00ebr t\u00eb funksionuar n\u00eb variantet e kaluara t\u00eb pllakave Raspberry Pi \u00ebsht\u00eb penguar nga p\u00ebrdorimi i nj\u00eb kontroleri t\u00eb ngutjes q\u00eb ishte jo-standard dhe nuk kishte mb\u00ebshtetje p\u00ebr virtualizimin. N\u00eb Raspberry Pi 4 u p\u00ebrdor nj\u00eb kontrollues i zakonsh\u00ebm i ngutjes GIC-400, i mb\u00ebshtetur n\u00eb Xen, dhe zhvilluesit prisnin q\u00eb nuk do t\u00eb kishte probleme me nisjen e Xen. Por n\u00eb t\u00eb v\u00ebrtet\u00eb, gj\u00ebrat nuk ishin ashtu si\u00e7 pritej, dhe p\u00ebr t\u00eb siguruar funksionimin e Xen n\u00eb Raspberry Pi 4, duhej t\u00eb b\u00ebheshin ndryshime t\u00eb dukshme n\u00eb kodin p\u00ebr menaxhimin e memories.<\/p>\n

Varianti fillestar i bordit Raspberry Pi 4 kufizonte qasjen vet\u00ebm n\u00eb hap\u00ebsir\u00ebn adresore t\u00eb nj\u00eb gigabaiti t\u00eb par\u00eb t\u00eb memories, q\u00eb ishte e pamjaftueshme p\u00ebr Dom0. Ndryshimet e nevojshme u b\u00ebn\u00eb n\u00eb l\u00ebshimin e Xen 4.14, por menj\u00ebher\u00eb shfaqej nj\u00eb problem tjet\u00ebr \u2014 n\u00eb n\u00ebn-sistemin Xen p\u00ebr konvertimin e adresave virtuale n\u00eb adresa fizike, p\u00ebrdorej thirrja virt_to_phys, e cila nuk funksiononte p\u00ebr t\u00eb gjitha adresat virtuale dhe p\u00ebrpjekjet p\u00ebr t\u00eb konvertuar disa adresa virtuale p\u00ebrfundonin n\u00eb nj\u00eb gabim. P\u00ebr t\u00eb zgjidhur k\u00ebt\u00eb problem, duhej t\u00eb shtohej nj\u00eb funksion tjet\u00ebr p\u00ebr konvertimin e adresave.<\/p>\n

K\u00ebtu problemet nuk p\u00ebrfunduan dhe doli nj\u00eb ve\u00e7ori n\u00eb funksionimin e DMA \u2014 n\u00eb t\u00eb gjitha platformat e m\u00ebparshme t\u00eb mb\u00ebshtetura n\u00eb Xen (x86, ARM dhe ARM64), adresat e DMA dhe adresat fizike gjithmon\u00eb p\u00ebrputheshin, por n\u00eb Raspberry Pi 4 ato ishin t\u00eb ndryshme. T\u00eb gje\u0161 nj\u00eb zgjidhje p\u00ebr k\u00ebt\u00eb problem u tregua m\u00eb e v\u00ebshtir\u00eb dhe k\u00ebrkonte zhvillimin e patch-eve p\u00ebr kernelin Linux, q\u00eb kryenin konvertimin midis adresave fizike dhe adresave t\u00eb DMA. <\/p>\n

Korrigjimet e p\u00ebrgatitura u p\u00ebrfshin\u00eb n\u00eb b\u00ebrtham\u00ebn Linux 5.9 dhe tani Xen njihet si i gatsh\u00ebm p\u00ebr organizimin e virtualizimit n\u00eb bordet Raspberry Pi 4. P\u00ebrve\u00e7 k\u00ebsaj, n\u00eb Raspberry Pi 4 tani mund t\u00eb p\u00ebrdoret EVE<\/a><\/noindex> (Edge Virtualization Engine), motor p\u00ebr krijimin dhe ekzekutimin e aplikacioneve cloud-native, q\u00eb p\u00ebrdor Xen, Linuxkit<\/a><\/noindex> dhe Alpine Linux<\/a><\/noindex> p\u00ebr t\u00eb nd\u00ebrtuar infrastruktur\u00ebn e virtualizimit n\u00eb pajisjet portative.<\/p>\n

P\u00ebr m\u00eb tep\u00ebr, mund t\u00eb theksohet eliminimi 10 dob\u00ebsi<\/a><\/noindex> n\u00eb Xen. Vulnerabilitetet CVE-2020-25599<\/a><\/noindex>,
\nCVE-2020-25603<\/a><\/noindex> dhe
\nCVE-2020-25595<\/a><\/noindex>
\n potencialisht lejojn\u00eb q\u00eb nga sistemi mik t\u00eb fitojn\u00eb privilegje t\u00eb ambientit host. Problemet
\nCVE-2020-25601<\/a><\/noindex>, CVE-2020-25600<\/a><\/noindex>,
\nCVE-2020-25596<\/a><\/noindex>,
\nCVE-2020-25597<\/a><\/noindex>,
\nCVE-2020-25604<\/a><\/noindex>,
\nCVE-2020-25598<\/a><\/noindex> dhe
\nCVE-2020-25602<\/a><\/noindex>
\nkufizohen n\u00eb realizimin e nj\u00eb mohimi sh\u00ebrbimi.<\/p>\n

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

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

\u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 Xen \u043e\u0431\u044a\u044f\u0432\u0438\u043b\u0438 \u043e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f Xen Hypervisor \u043d\u0430 \u043f\u043b\u0430\u0442\u0430\u0445 Raspberry Pi 4. \u0410\u0434\u0430\u043f\u0442\u0430\u0446\u0438\u0438 Xen \u0434\u043b\u044f \u0440\u0430\u0431\u043e\u0442\u044b \u043d\u0430 \u043f\u0440\u043e\u0448\u043b\u044b\u0445 \u0432\u0430\u0440\u0438\u0430\u043d\u0442\u0430\u0445 \u043f\u043b\u0430\u0442 Raspberry Pi \u043c\u0435\u0448\u0430\u043b\u043e \u043f\u0440\u0438\u043c\u0435\u043d\u0435\u043d\u0438\u0435 \u043d\u0435\u0441\u0442\u0430\u043d\u0434\u0430\u0440\u0442\u043d\u043e\u0433\u043e \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440\u0430 \u043f\u0440\u0435\u0440\u044b\u0432\u0430\u043d\u0438\u0439, \u043d\u0435 \u0438\u043c\u0435\u044e\u0449\u0435\u0433\u043e \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0438 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438. \u0412 Raspberry Pi 4 \u0431\u044b\u043b \u043f\u0440\u0438\u043c\u0435\u043d\u0451\u043d \u043e\u0431\u044b\u0447\u043d\u044b\u0439 \u043a\u043e\u043d\u0442\u0440\u043e\u043b\u043b\u0435\u0440 \u043f\u0440\u0435\u0440\u044b\u0432\u0430\u043d\u0438\u0439 GIC-400, \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u044b\u0439 \u0432 Xen, \u0438 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 \u0440\u0430\u0441\u0441\u0447\u0438\u0442\u044b\u0432\u0430\u043b\u0438, \u0447\u0442\u043e \u043f\u0440\u043e\u0431\u043b\u0435\u043c \u0441 \u0437\u0430\u043f\u0443\u0441\u043a\u043e\u043c Xen 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