{"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\/da\/blog\/news\/vypusk-gipervizora-xen-4-15","title":{"rendered":"Udgivelsen af hypervisoren Xen 4.15","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Efter otte m\u00e5neders udvikling er den frie hypervisor Xen 4.15 blevet offentliggjort. Virksomheder som Amazon, Arm, Bitdefender, Citrix og EPAM Systems har deltaget i udviklingen af den nye version. Udgivelsen af opdateringer til Xen 4.15-grenen vil vare indtil den 8. oktober 2022, mens offentligg\u00f8relsen af sikkerhedsrettelser forts\u00e6tter indtil den 8. april 2024.      <\/p>\n<p>N\u00f8gle\u00e6ndringer i Xen 4.15:   <\/p>\n<ul>\n<li class=\"l\"> I processerne Xenstored og oxenstored er der implementeret eksperimentel support for live-opdateringer, som g\u00f8r det muligt at levere og anvende sikkerhedsrettelser uden at genstarte v\u00e6rtsmilj\u00f8et.\n<li class=\"l\"> Support til ensartede opstartsbilleder er blevet tilf\u00f8jet, hvilket giver mulighed for at oprette systembilleder, der inkluderer Xen-komponenter. S\u00e5danne billeder er udformet som en enkelt bin\u00e6r fil til EFI, som kan bruges til at starte et fungerende Xen-system direkt fra EFI-bootmanageren uden mellemled, s\u00e5som GRUB. Billedet inkluderer Xen-komponenter s\u00e5som hypervisor, kerne til v\u00e6rtsmilj\u00f8et (dom0), initrd, Xen KConfig, XSM-indstillinger og Device Tree.\n<li class=\"l\"> Der er implementeret eksperimentelle muligheder for at k\u00f8re enhedsmodeller p\u00e5 v\u00e6rtsystemet dom0 for ARM-platformen, hvilket muligg\u00f8r emulering af vilk\u00e5rlige hardwareenheder for g\u00e6stesystemer baseret p\u00e5 ARM-arkitekturen. Der er ogs\u00e5 tilf\u00f8jet support til SMMUv3 (System Memory Management Unit) for ARM, hvilket \u00f8ger sikkerheden og p\u00e5lideligheden ved enhedsgennemstr\u00f8mning p\u00e5 ARM-systemer.\n<li class=\"l\"> Muligheden for at bruge IPT (Intel Processor Trace) hardware-tracking mekanismen, der begyndte med Intel Broadwell CPU'er, er blevet tilf\u00f8jet, hvilket g\u00f8r det muligt at eksportere data fra g\u00e6stesystemer til debug-v\u00e6rkt\u00f8jer, der k\u00f8rer p\u00e5 v\u00e6rtsystemet. For eksempel kan man bruge VMI Kernel Fuzzer eller DRAKVUF Sandbox.\n<li class=\"l\"> Der er tilf\u00f8jet support til Viridian (Hyper-V) milj\u00f8er til k\u00f8rsel af g\u00e6stesystemer med Windows, der bruger mere end 64 VCPU.\n<li class=\"l\"> PV Shim-laget, der anvendes til at k\u00f8re u\u00e6ndrede paravirtualiserede g\u00e6stesystemer (PV) i PVH- og HVM-milj\u00f8er, er blevet moderniseret (det muligg\u00f8r k\u00f8rsel af \u00e6ldre g\u00e6stesystemer i mere sikre milj\u00f8er med strengere isolation). Den nye version forbedrer underst\u00f8ttelsen af at starte PV-g\u00e6stesystemer i milj\u00f8er, der kun underst\u00f8tter HVM-tilstand. St\u00f8rrelsen p\u00e5 laget er blevet reduceret ved at forkorte HVM-specifikt kode.\n<li class=\"l\"> Mulighederne for VirtIO-drivere p\u00e5 ARM-systemer er blevet udvidet. Der er blevet foresl\u00e5et en implementering af IOREQ til ARM-systemer, som senere planl\u00e6gges anvendt til at styrke virtualiseringen af input\/output ved hj\u00e6lp af VirtIO-protokoller. En referenceimplementering af VirtIO-blokdesignet for ARM er blevet tilf\u00f8jet, og muligheden for at overf\u00f8re VirtIO-blokenheder til g\u00e6stesystemer baseret p\u00e5 ARM-arkitekturen er blevet tilbudt. Underst\u00f8ttelsen af PCIe-virtualisering for ARM er begyndt. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/da\/server\/dts-los-angeles\/\"   title=\"server\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3700\">server<\/a> Arbejdet med at implementere Xen-porten for RISC-V-processorer forts\u00e6tter. Der udvikles i \u00f8jeblikket kode til styring af virtuel hukommelse p\u00e5 v\u00e6rts- og g\u00e6stesystemer, samt oprettelse af RISC-V-specifik kode.\n<li class=\"l\"> Sammen med Zephyr-projektet, baseret p\u00e5 MISRA_C-standarden, udvikles et s\u00e6t krav og retningslinjer til kodningsstandarder, der reducerer risikoen for sikkerhedsproblemer. Statisk analysev\u00e6rkt\u00f8jer anvendes til at afsl\u00f8re uoverensstemmelser med de opstillede regler.\n<li class=\"l\"> Initiativet Hyperlaunch er blevet pr\u00e6senteret med henblik p\u00e5 at tilbyde fleksible v\u00e6rkt\u00f8jer til konfiguration af opstart af et statisk s\u00e6t under systemopstart. Initiativet foresl\u00e5r konceptet domB (boot domain, dom0less), der g\u00f8r det muligt at undg\u00e5 ops\u00e6tningen af et dom0-milj\u00f8 ved opstart af virtuelle maskiner i den tidlige fase af serveropstart.\n<li class=\"l\"> I det kontinuerlige integrationssystem er Xen blevet testet i Alpine Linux og Ubuntu 20.04. Kontrollen af CentOS 6 er blevet stoppet. Tests af dom0\/domU baseret p\u00e5 QEMU er blevet tilf\u00f8jet til det kontinuerlige integrationsmilj\u00f8 for ARM. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/da\/vps\/\"   title=\"virtual machines\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2049\">virtual machines<\/a> Efter otte m\u00e5neders udvikling er udgivelsen af den gratis hypervisor Xen 4.15 blevet offentliggjort. Virksomheder som Amazon, Arm, Bitdefender, Citrix og EPAM Systems har deltaget i udviklingen af den nye version.\n<li class=\"l\"> \ud83e\udd47Udgivelsen af hypervisor Xen 4.15 | ProHoster      <\/ul>\n<p>Kilde: <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 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\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 5.0.3 - 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 \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 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