{"id":102492,"date":"2021-12-06T15:36:44","date_gmt":"2021-12-06T13:36:44","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-gipervizorov-xen-4-16-i-intel-cloud-hypervisor-20-0"},"modified":"2021-12-06T15:36:44","modified_gmt":"2021-12-06T13:36:44","slug":"vypusk-gipervizorov-xen-4-16-i-intel-cloud-hypervisor-20-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/da\/blog\/news\/vypusk-gipervizorov-xen-4-16-i-intel-cloud-hypervisor-20-0","title":{"rendered":"Udgivelse af hypervisorer Xen 4.16 og Intel Cloud Hypervisor 20.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Efter otte m\u00e5neders udvikling er den frie hypervisor Xen 4.16 blevet offentliggjort. Virksomheder som Amazon, Arm, Bitdefender, Citrix og EPAM Systems har deltaget i udviklingen af den nye version. Opdateringer til Xen 4.16-grenen vil forts\u00e6tte indtil 2. juni 2023, og publisering af sikkerhedsrettelser vil forts\u00e6tte indtil 2. december 2024.      <\/p>\n<p>N\u00f8gle\u00e6ndringer i Xen 4.16:   <\/p>\n<ul>\n<li class=\"l\"> I TPM Manager, der underst\u00f8tter driften af virtuelle chips til opbevaring af kryptografiske n\u00f8gler (vTPM), som implementeres p\u00e5 baggrund af en f\u00e6lles fysisk TPM (Trusted Platform Module), er der foretaget rettelser for efterf\u00f8lgende at muligg\u00f8re underst\u00f8ttelse af TPM 2.0-specifikationen.\n<li class=\"l\"> Afh\u00e6ngigheden af PV Shim-laget, der bruges til at k\u00f8re u\u00e6ndrede paravirtualiserede g\u00e6stesystemer (PV) i PVH- og HVM-milj\u00f8er, er blevet h\u00e6vet. Fremover vil brugen af 32-bit paravirtualiserede g\u00e6stesystemer kun v\u00e6re muligt i PV Shim-tilstand, hvilket vil mindske antallet af steder i hypervisoren, hvor der potentielt kan v\u00e6re s\u00e5rbarheder.\n<li class=\"l\"> Muligheden for opstart p\u00e5 Intel-enheder uden en programmerbar tidsur (PIT, Programmable Interval Timer) er tilf\u00f8jet.\n<li class=\"l\"> Rensningen af for\u00e6ldede komponenter er gennemf\u00f8rt, og standardbygningen af koden &#171;qemu-xen-traditional&#187; og PV-Grub er stoppet (behovet for Xen-specifikke forgreninger er forsvundet efter overf\u00f8rslen af \u00e6ndringerne med st\u00f8tte til Xen til hovedversionen af QEMU og Grub).\n<li class=\"l\"> Der er implementeret en indledende st\u00f8tte til virtualiserede t\u00e6llere til overv\u00e5gning af ydeevne (Performance Monitor Counters) for g\u00e6stesystemer med ARM-arkitektur.\n<li class=\"l\"> St\u00f8tten til dom0less-tilstanden er forbedret, hvilket muligg\u00f8r drift uden implementering af dom0-milj\u00f8et ved opstart <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/da\/vps\/\"   title=\"virtual machines\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2079\">virtual machines<\/a> i den tidlige serverboot-fase. De foretagne \u00e6ndringer har muliggjort underst\u00f8ttelse af 64-bit ARM-systemer med EFI-firmware.\n<li class=\"l\"> St\u00f8tten til heterogene 64-bit ARM-systemer baseret p\u00e5 big.LITTLE-arkitekturen er forbedret, hvilket kombinerer kraftige, men energikr\u00e6vende kerner i \u00e9n chip med mindre kraftfulde, men mere energieffektive kerner.    <\/ul>\n<p>Samtidig offentliggjorde Intel udgivelsen af hypervisoren Cloud Hypervisor 20.0, bygget p\u00e5 komponenter fra et samarbejdsprojekt mellem Rust-VMM, som ogs\u00e5 involverer virksomheder som Alibaba, Amazon, Google og Red Hat. Rust-VMM er skrevet i Rust-programmeringssproget og muligg\u00f8r oprettelsen af hypervisorer, der er specifikke for bestemte opgaver. Cloud Hypervisor er en af disse hypervisorer, der leverer en h\u00f8j-niveau monitor for virtuelle maskiner (VMM), der k\u00f8rer oven p\u00e5 KVM og er optimeret til at l\u00f8se opgaver, der er typiske for skybaserede systemer. Koden til projektet er tilg\u00e6ngelig under Apache 2.0 licensen.    <\/p>\n<p>Cloud Hypervisor fokuserer p\u00e5 at k\u00f8re moderne Linux-distributioner ved hj\u00e6lp af para-virtualiserede enheder baseret p\u00e5 virtio. Blandt de centrale opgaver n\u00e6vnes: h\u00f8j responsivitet, lavt hukommelsesforbrug, h\u00f8j ydeevne, forenklet ops\u00e6tning og reduktion af mulige angrebsvectorer. Underst\u00f8ttelse af emulering er begr\u00e6nset til et minimum, og der satses p\u00e5 paravirtualisering. I \u00f8jeblikket underst\u00f8ttes kun x86_64-systemer, men der er planer om ogs\u00e5 at underst\u00f8tte AArch64. Af g\u00e6stelys underst\u00f8ttes kun 64-bit versioner af Linux. Ops\u00e6tning af CPU, hukommelse, PCI og NVDIMM foretages under byggestadiet. Der er mulighed for at migrere virtuelle maskiner mellem <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/da\/server\/dts-dusseldorf\/\"   title=\"servere\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3446\">servere<\/a>.       <\/p>\n<p>I den nye version:  <\/p>\n<ul>\n<li class=\"l\">  For x86_64 og aarch64-arkitekturer er det nu tilladt at oprette op til 16 PCI-segmenter, hvilket \u00f8ger det samlede antal tilladte PCI-enheder fra 31 til 496.\n<li class=\"l\"> Underst\u00f8ttelsen af binding af virtuelle CPU'er til fysiske CPU-kerner (CPU pinning) er blevet implementeret. For hver vCPU kan der nu defineres et begr\u00e6nset s\u00e6t af v\u00e6rts-CPU'er, hvor udf\u00f8relse er tilladt, hvilket kan v\u00e6re nyttigt ved direkte afspejling (1:1) af v\u00e6rtsressourcerne og g\u00e6stefysik eller ved k\u00f8rsel af en virtuel maskine p\u00e5 en bestemt NUMA-node.\n<li class=\"l\"> Underst\u00f8ttelsen af virtualisering af input\/output er blevet forbedret. Hver VFIO-region kan nu spejles i hukommelsen, hvilket reducerer antallet af udtr\u00e6dninger fra den virtuelle maskine og hj\u00e6lper med at \u00f8ge ydeevnen af enheds-passthrough til den virtuelle maskine.\n<li class=\"l\"> I koden skrevet i Rust er der arbejdet p\u00e5 at erstatte unsafe-sektioner med alternative implementeringer, der k\u00f8rer i safe-tilstand. For de resterende unsafe-sektioner er der tilf\u00f8jet detaljerede kommentarer, der forklarer, hvorfor den efterladte unsafe-kode kan betragtes som sikker.  <\/ul>\n<p>Kilde: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=56278\">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 4.16. \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 4.16 \u043f\u0440\u043e\u0434\u043b\u0438\u0442\u0441\u044f \u0434\u043e 2 \u0438\u044e\u043d\u044f 2023 \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 2 \u0434\u0435\u043a\u0430\u0431\u0440\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 4.16: \u0412 TPM Manager, [&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-102492","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - 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