{"id":99703,"date":"2021-04-12T10:23:04","date_gmt":"2021-04-12T08:23:04","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-gipervizora-xen-4-15"},"modified":"2021-04-12T10:23:04","modified_gmt":"2021-04-12T08:23:04","slug":"vypusk-gipervizora-xen-4-15","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hr\/blog\/news\/vypusk-gipervizora-xen-4-15","title":{"rendered":"Izdanje hipervizora Xen 4.15","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Nakon osam mjeseci razvoja, objavljen je izvorni hipervizor Xen 4.15. U razvoju nove verzije sudjelovale su tvrtke kao \u0161to su Amazon, Arm, Bitdefender, Citrix i EPAM Systems. Izlazak a\u017euriranja za granu Xen 4.15 trajat \u0107e do 8. listopada 2022. godine, a objavljivanje ispravaka ranjivosti do 8. travnja 2024. godine.      <\/p>\n<p>Klju\u010dne promjene u Xen 4.15:   <\/p>\n<ul>\n<li class=\"l\"> U procesima Xenstored i oxenstored implementirana je eksperimentalna podr\u0161ka za live a\u017euriranja, koja omogu\u0107uju dostavljanje i primjenu ispravaka ranjivosti bez ponovnog pokretanja host okru\u017eenja.\n<li class=\"l\"> Dodana je podr\u0161ka za ujedinjene pokreta\u010de, \u0161to omogu\u0107ava kreiranje sistemskih slika koje uklju\u010duju i komponente Xen. Takve slike su oblikovane kao jedna binarna datoteka za EFI, koja se mo\u017ee koristiti za pokretanje radne Xen-sisteme izravno iz EFI boot managera bez posredni\u010dkih pokreta\u010da poput GRUB-a. U sliku su uklju\u010dene komponente Xen kao \u0161to su hipervizor, jezgra za host okru\u017eenje (dom0), initrd, Xen KConfig, postavke XSM i Device Tree.\n<li class=\"l\"> Za ARM platformu implementirana je eksperimentalna mogu\u0107nost izvo\u0111enja modela ure\u0111aja na strani host sistema dom0, \u0161to omogu\u0107ava emulaciju proizvoljnih hardverskih ure\u0111aja za gostuju\u0107e sustave temeljen na ARM arhitekturi. Tako\u0111er je implementirana podr\u0161ka za SMMUv3 (Sustav za upravljanje memorijom), koja pobolj\u0161ava sigurnost i pouzdanost proslje\u0111ivanja ure\u0111aja na ARM sustavima.\n<li class=\"l\"> Dodana je mogu\u0107nost kori\u0161tenja mehanizma hardverskog pra\u0107enja IPT (Intel Processor Trace), koji je dostupan od CPU Intel Broadwell, za izvoz podataka iz gostuju\u0107ih sustava u alate za debagiranje pokretane na strani host sistema. Na primjer, mogu se koristiti VMI Kernel Fuzzer ili DRAKVUF Sandbox.\n<li class=\"l\"> Dodana je podr\u0161ka za Viridian okru\u017eenja (Hyper-V) za pokretanje gostuju\u0107ih sustava s Windows, koji koriste vi\u0161e od 64 VCPU.\n<li class=\"l\"> Modificiran je sloj PV Shim, koji se koristi za pokretanje nemodificiranih paravirualiziranih gostuju\u0107ih sustava (PV) u PVH i HVM okru\u017eenjima (omogu\u0107ava rad starih gostuju\u0107ih sustava u sigurnijim okru\u017eenjima koja pru\u017eaju stro\u017eu izolaciju). U novoj verziji pobolj\u0161ana je podr\u0161ka za pokretanje gostuju\u0107ih sustava PV u okru\u017eenjima koja podr\u017eavaju samo HVM na\u010din. Smanjena je veli\u010dina sloja, zahvaljuju\u0107i smanjenju HVM specifi\u010dnog koda.\n<li class=\"l\"> Pro\u0161irene mogu\u0107nosti VirtIO drajvera na ARM sustavima. Za ARM sustave ponu\u0111ena je implementacija <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hr\/server\/dts-los-angeles\/\"   title=\"poslu\u017eitelja\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3700\">poslu\u017eitelja<\/a> IOREQ, koja \u0107e se u budu\u0107nosti koristiti za pobolj\u0161anje virtualizacije ulaz\/izlaz uz kori\u0161tenje VirtIO protokola. Dodana je referentna implementacija VirtIO blok ure\u0111aja za ARM i omogu\u0107eno je proslje\u0111ivanje VirtIO blok ure\u0111aja gostuju\u0107im sustavima temeljenim na ARM arhitekturi. Zapo\u010dela je podr\u0161ka za PCIe virtualizaciju na ARM-u.\n<li class=\"l\"> Nastavlja se rad na realizaciji portiranja Xen-a za RISC-V procesore. Trenutno se razvija kod za upravljanje virtualnom memorijom na strani doma\u0107ina i gostuju\u0107ih sustava, kao i kreira se specifi\u010dan kod za RISC-V arhitekturu.\n<li class=\"l\"> Zajedno s projektom Zephyr, koji se temelji na MISRA_C standardu, razvija se set zahtjeva i smjernica za kodiranje koji smanjuju rizike od problema s sigurno\u0161\u0107u. Za otkrivanje odstupanja od pravila koriste se stati\u010dki analizatori.\n<li class=\"l\"> Predstavljena je inicijativa Hyperlaunch, usmjerena na pru\u017eanje fleksibilnih alata za pode\u0161avanje pokretanja stati\u010dkog skupa <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hr\/vps\/\"   title=\"virtualnih ma\u0161ina\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2049\">virtualnih ma\u0161ina<\/a> za vrijeme pokretanja sustava. Inicijativa nudi koncept domB (boot domain, bez dom0), koji omogu\u0107uje izbjegavanje postavljanja dom0 okru\u017eenja tijekom pokretanja virtualnih ma\u0161ina u ranoj fazi pokretanja poslu\u017eitelja.\n<li class=\"l\"> U sustavu neprekidne integracije testira se Xen na Alpine Linuxu i Ubuntu 20.04. Provjera CentOS 6 je obustavljena. U okru\u017eenje neprekidne integracije za ARM dodani su testovi dom0 \/ domU temeljen na QEMU.      <\/ul>\n<p>Izvor: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=54949\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0432\u043e\u0441\u044c\u043c\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u0433\u0438\u043f\u0435\u0440\u0432\u0438\u0437\u043e\u0440\u0430 Xen 4.15. \u0412 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u043d\u043e\u0432\u043e\u0433\u043e \u0432\u044b\u043f\u0443\u0441\u043a\u0430 \u043f\u0440\u0438\u043d\u044f\u043b\u0438 \u0443\u0447\u0430\u0441\u0442\u0438\u0435 \u0442\u0430\u043a\u0438\u0435 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438, \u043a\u0430\u043a Amazon, Arm, Bitdefender, Citrix \u0438 EPAM Systems. \u0412\u044b\u043f\u0443\u0441\u043a \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0434\u043b\u044f \u0432\u0435\u0442\u043a\u0438 Xen 4.15 \u043f\u0440\u043e\u0434\u043b\u0438\u0442\u0441\u044f \u0434\u043e 8 \u043e\u043a\u0442\u044f\u0431\u0440\u044f 2022 \u0433\u043e\u0434\u0430, \u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u044f \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0434\u043e 8 \u0430\u043f\u0440\u0435\u043b\u044f 2024 \u0433\u043e\u0434\u0430. \u041a\u043b\u044e\u0447\u0435\u0432\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 Xen 4.15: \u0412 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0430\u0445 Xenstored [&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-99703","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - 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