{"id":89996,"date":"2020-07-28T01:42:24","date_gmt":"2020-07-27T23:42:24","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-gipervizora-xen-4-14"},"modified":"2020-07-28T01:42:24","modified_gmt":"2020-07-27T23:42:24","slug":"vypusk-gipervizora-xen-4-14","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/vypusk-gipervizora-xen-4-14","title":{"rendered":"Udgivelsen af hypervisoren Xen 4.14","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Efter otte m\u00e5neders udvikling <noindex><a rel=\"nofollow\" href=\"https:\/\/xenproject.org\/2020\/07\/24\/xen-project-hypervisor-version-4-14-brings-added-security-and-performance\/\">udgivet<\/a><\/noindex> udgivelsen af den frie hypervisor <noindex><a rel=\"nofollow\" href=\"https:\/\/www.xenproject.org\/\">Xen 4.14<\/a><\/noindex>. I udviklingen af den nye version har virksomheder som Alibaba, Amazon, AMD, Arm, Bitdefender, Citrix, EPAM Systems, Huawei og Intel deltaget. Udgivelsen af opdateringer til Xen 4.14-grenen vil forts\u00e6tte frem til 24. januar 2022, mens publiceringen af sikkerhedsopdateringer vil v\u00e6re frem til 24. juli 2023.<\/p>\n<p>N\u00f8glepunkter <noindex><a rel=\"nofollow\" href=\"http:\/\/wiki.xenproject.org\/wiki\/Xen_Project_4.14_Feature_List\">Optimeringer<\/a><\/noindex> i Xen 4.14: <\/p>\n<ul>\n<li class=\"l\"> Tilf\u00f8jet support for en ny enhedsmodel <noindex><a rel=\"nofollow\" href=\"https:\/\/wiki.xenproject.org\/wiki\/Device_Model_Stub_Domains\">Linux stubdomain<\/a><\/noindex>, der muligg\u00f8r udf\u00f8relsen af opgaver under en s\u00e6rskilt, ikke-privilegeret bruger, og adskiller komponenterne til enheds-emulering fra Dom0. Tidligere kunne kun modellen af enheder &#171;qemu-traditional&#187; anvendes i stubdomain-tilstand, hvilket begr\u00e6nsede omfanget af det emulerede udstyr. Den nye model <noindex><a rel=\"nofollow\" href=\"https:\/\/wiki.xen.org\/wiki\/Linux_stub_domains\">Linux stubomains<\/a><\/noindex> blev udviklet af QUBES OS-projektet og underst\u00f8tter brugen af emuleringsdrivere fra de nyeste versioner af QEMU samt tilg\u00e6ngelige supplerende funktioner i QEMU til g\u00e6stesystemer.\n<li class=\"l\"> For systemer, der underst\u00f8tter Intel EPT, er der implementeret st\u00f8tte til oprettelse af letv\u00e6gtsafvigelser (forgreninger) af virtuelle maskiner til hurtig introspektion, f.eks. til malware-analyse eller fuzzing-testning. I s\u00e5danne forgreninger anvendes delt hukommelse, og der udf\u00f8res ikke kloning af enhedsmodellen.\n<li class=\"l\"> Liv-patch-systemet har f\u00e5et binding til identifikatorer for hypervisor-versioner og registrerer r\u00e6kkef\u00f8lgen af anvendelse af patches for at undg\u00e5 overlapning af patches, der ikke er til den rigtige version eller i den forkerte r\u00e6kkef\u00f8lge.\n<li class=\"l\"> Tilf\u00f8jet st\u00f8tte for CET-udvidelser (Intel Control-flow Enforcement Technology) til beskyttelse mod udnyttelse af s\u00e5rbarheder, der er bygget ved hj\u00e6lp af teknikker som Return-Oriented Programming (ROP).\n<li class=\"l\"> Tilf\u00f8jet indstilling CONFIG_PV32 for at deaktivere st\u00f8tte til 32-bit para-virtualiserede (PV) g\u00e6stesystemer i hypervisoren, mens 64-bit stadig underst\u00f8ttes.\n<li class=\"l\"> Tilf\u00f8jet st\u00f8tte for Hypervisor FS, et pseudo-FS i stil med sysfs for struktureret adgang til interne data og indstillinger i hypervisoren, som ikke kr\u00e6ver loggning eller skrivning af hypercalls.\n<li class=\"l\"> Muligheden for at k\u00f8re Xen som et g\u00e6stebaseret system under Hyper-V-hypervisoren, der anvendes i Microsoft Azures cloudplatform, er blevet tilf\u00f8jet. At k\u00f8re Xen inde i Hyper-V g\u00f8r det muligt at bruge den velkendte virtualiseringsstak i Azure-cloudmilj\u00f8er og giver mulighed for at flytte virtuelle maskiner mellem forskellige cloudsystemer.\n<li class=\"l\"> Muligheden for at generere en tilf\u00e6ldig identifikator for g\u00e6stebaserede systemer er blevet tilf\u00f8jet (tidligere blev identifikatorer genereret sekventielt). Identifikatorerne kan nu ogs\u00e5 gemmes mellem operationer for gemming, genopretning og migration af VM-tilstand.\n<li class=\"l\"> Automatisk generering af bindings for Go-sproget baseret p\u00e5 libxl-strukturer er blevet sikret.\n<li class=\"l\"> For Windows 7, 8.x og 10 er der tilf\u00f8jet support for KDD, et v\u00e6rkt\u00f8j til interaktion med WinDbg-debuggeren (Windows Debugger), hvilket g\u00f8r det muligt at debugge milj\u00f8er med Windows uden at aktivere debugging i den g\u00e6stebaserede OS.\n<li class=\"l\"> Support tilf\u00f8jet for alle versioner af Raspberry Pi 4, der leveres med 4GB og 8GB RAM.\n<li class=\"l\"> Underst\u00f8ttelse af AMD EPYC-processorer med kode-navnet &#171;Milan&#187; er blevet tilf\u00f8jet.\n<li class=\"l\"> Ydelsen for nested virtualization, hvor Xen k\u00f8rer inden i g\u00e6stebaserede systemer baseret p\u00e5 Xen eller Viridian, er blevet forbedret.\n<li class=\"l\"> I emuleringsmodus er der implementeret st\u00f8tte for instruktionss\u00e6ttet AVX512_BF16.\n<li class=\"l\"> Bygningen af hypervisoren er blevet overf\u00f8rt til at bruge Kbuild.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Kilde: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53440\">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 4.14. \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 Alibaba, Amazon, AMD, Arm, Bitdefender, Citrix, EPAM Systems, Huawei \u0438 Intel. \u0412\u043f\u0443\u0441\u043a \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0434\u043b\u044f \u0432\u0435\u0442\u043a\u0438 Xen 4.14 \u043f\u0440\u043e\u0434\u043b\u0438\u0442\u0441\u044f \u0434\u043e 24 \u044f\u043d\u0432\u0430\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 24 \u0438\u044e\u043b\u044f 2023 \u0433\u043e\u0434\u0430. \u041a\u043b\u044e\u0447\u0435\u0432\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 Xen [&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-89996","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta name=\"description\" content=\"\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.\" \/>\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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