{"id":106135,"date":"2022-12-17T15:36:38","date_gmt":"2022-12-17T13:36:38","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-gipervizora-xen-4-17"},"modified":"2022-12-17T15:36:38","modified_gmt":"2022-12-17T13:36:38","slug":"vypusk-gipervizora-xen-4-17","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/vypusk-gipervizora-xen-4-17","title":{"rendered":"Lansare hipervizor Xen 4.17","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dup\u0103 un an de dezvoltare, a fost lansat\u0103 versiunea liber\u0103 a hipervizorului Xen 4.17. La dezvoltarea noului release au participat companii precum Amazon, Arm, Bitdefender, Citrix, EPAM Systems \u0219i Xilinx (AMD). Procesul de actualizare pentru ramura Xen 4.17 va continua p\u00e2n\u0103 pe 12 iunie 2024, iar publica\u021bia corect\u0103rii vulnerabilit\u0103\u021bilor va avea loc p\u00e2n\u0103 pe 12 decembrie 2025.      <\/p>\n<p>Modific\u0103rile cheie \u00een Xen 4.17:   <\/p>\n<ul>\n<li class=\"l\"> S-a asigurat conformitatea par\u021bial\u0103 cu cerin\u021bele pentru dezvoltarea de programe sigure \u0219i fiabile \u00een limbajul C, formulate \u00een specifica\u021biile MISRA-C, utilizate \u00een crearea sistemelor critice. \u00cen Xen au fost implementate oficial 4 directive \u0219i 24 de reguli MISRA-C (din 143 de reguli \u0219i 16 directive), precum \u0219i integrarea analizei statice MISRA-C, care verific\u0103 respectarea cerin\u021belor specifica\u021biei.\n<li class=\"l\"> S-a oferit posibilitatea de a defini configura\u021bia static\u0103 a Xen pentru sistemele ARM, care determin\u0103 dinainte toate resursele necesare pentru bootarea sistemelor gazd\u0103. Toate resursele, cum ar fi memoria partajat\u0103, canalele pentru notificarea evenimentelor \u0219i spa\u021biul din heap-ul hipervizorului, sunt distribuite dinainte la pornirea hipervizorului, \u0219i nu sunt alocate dinamic, ceea ce elimin\u0103 posibilele defec\u021biuni cauzate de lipsa resurselor \u00een timpul func\u021bion\u0103rii.\n<li class=\"l\"> Pentru sistemele \u00eencorporate bazate pe arhitectura ARM, a fost implementat suport experimental (tech preview) pentru virtualizarea input\/output folosind protocoale VirtIO. Pentru schimbul de date cu dispozitivele virtuale de input\/output este utilizat transportul virtio-mmio, ceea ce a asigurat compatibilitatea cu o gam\u0103 larg\u0103 de dispozitive VirtIO. A fost realizat suportul frontend pentru Linux, uneltei (libxl\/xl), modului dom0less \u0219i backendurilor care ruleaz\u0103 \u00een spa\u021biul utilizatorului (au fost testate backenduri precum virtio-disk, virtio-net, i2c \u0219i gpio).\n<li class=\"l\"> Suportul pentru modul dom0less a fost \u00eembun\u0103t\u0103\u021bit, permi\u021b\u00e2nd evitarea desf\u0103\u0219ur\u0103rii unui mediu dom0 la pornire <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/ro\/vps\/\"   title=\"ma\u0219ini virtuale\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2131\">ma\u0219ini virtuale<\/a> \u00een etapa timpurie a \u00eenc\u0103rc\u0103rii serverului. A fost oferit\u0103 posibilitatea de a defini grupuri de CPU (CPUPOOL) \u00een timpul \u00eenc\u0103rc\u0103rii (prin arborele dispozitivelor), ceea ce permite utilizarea grupurilor \u00een configura\u021bii f\u0103r\u0103 dom0, de exemplu, pentru alocarea diferitelor tipuri de nuclee CPU pe sistemele ARM bazate pe arhitectura big.LITTLE, care combin\u0103 \u00een acela\u0219i cip nuclei puternici, dar care consum\u0103 mult\u0103 energie, \u0219i nuclei mai pu\u021bin performan\u021bi, dar mai eficien\u021bi din punct de vedere energetic. \u00cen plus, \u00een dom0less a fost oferit\u0103 posibilitatea de a asocia frontend-ul\/backend-ul paravirtualiz\u0103rii cu sistemele gazd\u0103, ceea ce permite \u00eenc\u0103rcarea sistemelor gazd\u0103 cu dispozitivele paravirtualizate necesare.\n<li class=\"l\"> Pe sistemele ARM, structurile de virtualizare a memoriei (P2M, Physical to Machine) sunt acum alocate dintr-un grup de memorie format \u00een timpul cre\u0103rii domeniului, ceea ce permite \u00eembun\u0103t\u0103\u021birea eficien\u021bei izol\u0103rii \u00eentre sistemele gazd\u0103 \u00een cazul apari\u021biei unor erori legate de memorie.\n<li class=\"l\"> Pentru sistemele ARM a fost ad\u0103ugat\u0103 protec\u021bie \u00eempotriva vulnerabilit\u0103\u021bii Spectre-BHB \u00een structurile microarhitecturale ale procesoarelor.\n<li class=\"l\"> Pe sistemele ARM a fost oferit\u0103 posibilitatea de a rula sistemul de operare Zephyr \u00een mediu de baz\u0103 Dom0.\n<li class=\"l\"> A fost oferit\u0103 posibilitatea unei compil\u0103ri separate (out-of-tree) a hipervizorului.\n<li class=\"l\"> Pe sistemele x86, suportul pentru paginile mari IOMMU (superpage) a fost asigurat pentru toate tipurile de sisteme gazd\u0103, ceea ce permite cre\u0219terea l\u0103\u021bimii de band\u0103 \u00een cazul transferului de dispozitive PCI. A fost ad\u0103ugat suport pentru gazde echipate cu p\u00e2n\u0103 la 12 TB RAM. \u00cen timpul \u00eenc\u0103rc\u0103rii a fost implementat\u0103 posibilitatea de a stabili parametrii cpuid pentru dom0. Pentru gestionarea m\u0103surilor de protec\u021bie \u00eempotriva atacurilor asupra CPU-ului implementate la nivelul hipervizorului, au fost propuse parametrii VIRT_SSBD \u0219i MSR_SPEC_CTRL.\n<li class=\"l\"> Se dezvolt\u0103 separat transportul VirtIO-Grant, care se deosebe\u0219te de VirtIO-MMIO printr-un nivel mai ridicat de securitate \u0219i capacitatea de a rula gestionari \u00eentr-un domeniu izolat pentru drivere. \u00cen VirtIO-Grant, \u00een loc de o mapare direct\u0103 a memoriei, se utilizeaz\u0103 o traducere a adreselor fizice ale sistemului gazd\u0103 \u00een grant-links, ceea ce permite utilizarea unor zone de memorie partajat\u0103 prealabil convenite pentru schimbul de date \u00eentre sistemul gazd\u0103 \u0219i backend-ul VirtIO, f\u0103r\u0103 a oferi backend-ului drepturi de execu\u021bie a map\u0103rii memoriei. Suportul pentru VirtIO-Grant este deja implementat \u00een nucleul Linux, dar \u00eenc\u0103 nu este inclus \u00een backend-urile QEMU, \u00een virtio-vhost \u0219i \u00een toolkit (libxl\/xl).\n<li class=\"l\"> Se continu\u0103 dezvoltarea ini\u021biativei Hyperlaunch, care vizeaz\u0103 furnizarea de instrumente flexibile pentru configurarea lans\u0103rii ma\u0219inilor virtuale \u00een timpul boot-ului sistemului. \u00cen prezent, este gata primul set de patch-uri care permit identificarea domeniilor PV \u0219i transmiterea imaginilor lor c\u0103tre hipervizor la boot. De asemenea, s-au implementat toate componentele necesare pentru a rula astfel de domenii paravirtualizate <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/ro\/domain\/\"   title=\"domenii\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3179\">domenii<\/a>, inclusiv componentele Xenstore pentru driverele PV. Dup\u0103 aprobarea patch-urilor, va \u00eencepe munca pentru activarea suportului dispozitivelor PVH \u0219i HVM, precum \u0219i pentru implementarea unui domeniu separat domB (builder domain), potrivit pentru organizarea boot-ului m\u0103surat (measured boot), care confirm\u0103 autenticitatea tuturor componentelor \u00eenc\u0103rcate.\n<li class=\"l\"> Se lucreaz\u0103 \u00een continuare la crearea portului Xen pentru arhitectura RISC-V.  <\/ul>\n<p>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=58340\">opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0433\u043e\u0434\u0430 \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 4.17. \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, EPAM Systems \u0438 Xilinx (AMD). \u0424\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0434\u043b\u044f \u0432\u0435\u0442\u043a\u0438 Xen 4.17 \u043f\u0440\u043e\u0434\u043b\u0438\u0442\u0441\u044f \u0434\u043e 12 \u0438\u044e\u043d\u044f 2024 \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 12 \u0434\u0435\u043a\u0430\u0431\u0440\u044f 2025 \u0433\u043e\u0434\u0430. \u041a\u043b\u044e\u0447\u0435\u0432\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 Xen 4.17: \u041e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u043e \u0447\u0430\u0441\u0442\u0438\u0447\u043d\u043e\u0435 [&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-106135","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2.1 - 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La dezvoltarea noului release au participat companii precum Amazon, Arm, Bitdefender, Citrix, EPAM Systems \u0219i Xilinx (AMD).","canonical_url":"https:\/\/prohoster.info\/ro\/blog\/news\/vypusk-gipervizora-xen-4-17","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"ro_RO","og:site_name":"ProHoster | \u041a\u0443\u043f\u0438\u0442\u044c \u043d\u0430\u0434\u0435\u0436\u043d\u044b\u0439 \u0445\u043e\u0441\u0442\u0438\u043d\u0433 \u0434\u043b\u044f \u0441\u0430\u0439\u0442\u043e\u0432 \u0441 \u0437\u0430\u0449\u0438\u0442\u043e\u0439 \u043e\u0442 DDoS, VPS VDS \u0441\u0435\u0440\u0432\u0435\u0440\u044b","og:type":"article","og:title":"\ud83e\udd47\u0412\u044b\u043f\u0443\u0441\u043a \u0433\u0438\u043f\u0435\u0440\u0432\u0438\u0437\u043e\u0440\u0430 Xen 4.17 | ProHoster","og:description":"\u041f\u043e\u0441\u043b\u0435 \u0433\u043e\u0434\u0430 \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 4.17. \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, EPAM Systems \u0438 Xilinx (AMD).","og:url":"https:\/\/prohoster.info\/ro\/blog\/news\/vypusk-gipervizora-xen-4-17","og:image":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:secure_url":"https:\/\/prohoster.info\/wp-content\/uploads\/2021\/11\/logo-350.jpg","og:image:width":350,"og:image:height":350,"article:published_time":"2022-12-17T13:36:38+00:00","article:modified_time":"2022-12-17T13:36:38+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":{"post_id":"106135","title":null,"description":null,"keywords":null,"keyphrases":null,"primary_term":null,"canonical_url":null,"og_title":null,"og_description":null,"og_object_type":"default","og_image_type":"default","og_image_url":null,"og_image_width":null,"og_image_height":null,"og_image_custom_url":null,"og_image_custom_fields":null,"og_video":null,"og_custom_url":null,"og_article_section":null,"og_article_tags":null,"twitter_use_og":false,"twitter_card":"default","twitter_image_type":"default","twitter_image_url":null,"twitter_image_custom_url":null,"twitter_image_custom_fields":null,"twitter_title":null,"twitter_description":null,"schema":{"blockGraphs":[],"customGraphs":[],"default":{"data":{"Article":[],"Course":[],"Dataset":[],"FAQPage":[],"Movie":[],"Person":[],"Product":[],"ProductReview":[],"Car":[],"Recipe":[],"Service":[],"SoftwareApplication":[],"WebPage":[]},"graphName":"","isEnabled":true},"graphs":[]},"schema_type":"default","schema_type_options":null,"pillar_content":false,"robots_default":true,"robots_noindex":false,"robots_noarchive":false,"robots_nosnippet":false,"robots_nofollow":false,"robots_noimageindex":false,"robots_noodp":false,"robots_notranslate":false,"robots_max_snippet":null,"robots_max_videopreview":null,"robots_max_imagepreview":"large","priority":null,"frequency":null,"local_seo":null,"seo_analyzer_scan_date":null,"breadcrumb_settings":null,"limit_modified_date":false,"reviewed_by":null,"ai":null,"created":"2026-02-09 17:11:32","updated":"2026-02-11 11:12:06","focus_keyword":null,"additional_keywords":null,"truseo_locale":null},"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts\/106135","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/comments?post=106135"}],"version-history":[{"count":2,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts\/106135\/revisions"}],"predecessor-version":[{"id":160572,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/posts\/106135\/revisions\/160572"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/media?parent=106135"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/categories?post=106135"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/ro\/wp-json\/wp\/v2\/tags?post=106135"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}