{"id":111676,"date":"2023-11-21T15:10:42","date_gmt":"2023-11-21T13:10:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-gipervizora-xen-4-18"},"modified":"2023-11-21T15:10:42","modified_gmt":"2023-11-21T13:10:42","slug":"vypusk-gipervizora-xen-4-18","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/vypusk-gipervizora-xen-4-18","title":{"rendered":"Uscita del hypervisor Xen 4.18","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dopo 11 mesi di sviluppo, \u00e8 stato rilasciato il hypervisor open-source Xen 4.18. Tra le aziende che hanno partecipato allo sviluppo di questa nuova versione ci sono Amazon, Arm, Bitdefender, Citrix, EPAM Systems e AMD. La formazione degli aggiornamenti per la branch Xen 4.18 continuer\u00e0 fino al 16 maggio 2025, mentre la pubblicazione delle correzioni delle vulnerabilit\u00e0 si protrarr\u00e0 fino al 16 novembre 2026.      <\/p>\n<p>Modifiche principali in Xen 4.18:   <\/p>\n<ul>\n<li class=\"l\"> Sono state aggiunte implementazioni iniziali dei porting per le architetture RISC-V e Power (ppc64le). Sono stati configurati ambienti di test per i porting RISC-V e Power nel sistema di integrazione continua GitLab CI.\n<li class=\"l\"> Durante l'operazione su sistemi ARM64, il sottosistema di memoria di Xen ha tenuto conto delle peculiarit\u00e0 dell'architettura ARM. \u00c8 supportata in modo sperimentale l'estensione delle istruzioni vettoriali SVE (Scalable Vector Extension). \u00c8 stato aggiunto un framework per il firmware Arm per l'architettura ARM A-profile (ARM Application-profile, FF-A). \u00c8 stata introdotta in modo sperimentale la possibilit\u00e0 di aggiungere e rimuovere dinamicamente nodi nell'albero dei dispositivi di Xen tramite file .dtbo.\n<li class=\"l\"> Nei sistemi con processori Intel, il parametro MSR_ARCH_CAPS \u00e8 ora visibile nei sistemi guest e pu\u00f2 essere configurato tramite il file di configurazione della macchina virtuale. Nei processori rilasciati a partire dal 2019, il parametro MSR_ARCH_CAPS consente di conoscere quali correzioni hardware relative alle vulnerabilit\u00e0 legate all'esecuzione speculativa sono state applicate.\n<li class=\"l\"> \u00c8 stata aggiunta la supporto per l'estensione CPUID_USER_DIS (CPUID Faulting), introdotta nella quarta generazione di processori AMD EPYC per gestire la possibilit\u00e0 di visualizzare i dati CPUID da una guest system para-virtualizzata.\n<li class=\"l\"> Aggiunto il supporto per le estensioni introdotte nei processori Intel basati sull'architettura microarchitetturale Sapphire Rapids:\n<ul>\n<li class=\"l\"> Per i sistemi guest in modalit\u00e0 HVM e PVH \u00e8 stato aggiunto il supporto per il meccanismo PKS (Protection Key Supervisor), che espande le capacit\u00e0 di protezione delle pagine di memoria.\n<li class=\"l\"> Per prevenire il crash dell'intero sistema in caso di problemi con le mutex microarchitetturali, \u00e8 stato attivato il meccanismo VM-Notify.\n<li class=\"l\"> \u00c8 stata introdotta la protezione contro il blocco del bus a causa di utilizzi non mirati di istruzioni atomiche nel sistema guest (il rate-limit \u00e8 attivato).    <\/ul>\n<li class=\"l\"> \u00c8 stato aggiunto il supporto per le istruzioni AVX512-FP16, emerse nei processori Intel basati sull'architettura microarchitettonica Granite Rapids.\n<li class=\"l\"> \u00c8 stato aggiunto un driver cpufreq che utilizza il meccanismo HWP (Hardware P-States) per gestire il consumo energetico e la frequenza dei processori Intel.\n<li class=\"l\"> \u00c8 stato implementato il supporto per l'esecuzione forzata di operazioni di sistema in modalit\u00e0 DOITM (Data Operand Independent Timing Mode), garantendo un tempo di esecuzione costante per le istruzioni, indipendente dai dati trattati in queste istruzioni.\n<li class=\"l\"> \u00c8 continuata l'implementazione dei requisiti per lo sviluppo di programmi sicuri e affidabili in linguaggio C, definiti nelle specifiche MISRA-C per sistemi critici. Il numero di direttive MISRA-C integrate in Xen \u00e8 passato da 4 a 6, mentre le regole sono aumentate da 24 a 65 (nella specifica ci sono 16 direttive e 143 regole in totale).\n<li class=\"l\"> Nell'insieme di strumenti xl\/libxl \u00e8 stata aggiunta la possibilit\u00e0 di modificare le impostazioni SMBIOS per i sistemi guest in modalit\u00e0 HVM.\n<li class=\"l\"> Sono stati aggiunti due nuovi hypercall per collegare lo stato operativo e le aree temporali del vCPU agli indirizzi fisici piuttosto che a quelli virtuali.          <\/ul>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=60153\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 11 \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 4.18. \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 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 4.18 \u043f\u0440\u043e\u0434\u043b\u0438\u0442\u0441\u044f \u0434\u043e 16 \u043c\u0430\u044f 2025 \u0433\u043e\u0434\u0430, \u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u044f 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Aziende come Amazon, Arm, Bitdefender, Citrix, EPAM Systems e AMD hanno partecipato allo sviluppo della nuova versione. La formazione degli aggiornamenti per la serie Xen 4.18 continuer\u00e0 fino al 16 maggio 2025, mentre la pubblicazione delle correzioni delle vulnerabilit\u00e0 avverr\u00e0 fino al 16 novembre 2026. Le modifiche principali in Xen 4.18: sono state aggiunte funzionalit\u00e0 iniziali","canonical_url":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/vypusk-gipervizora-xen-4-18","robots":"max-image-preview:large","keywords":"","webmasterTools":{"miscellaneous":""},"schema":null,"og:locale":"it_IT","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 4.18 | ProHoster","og:description":"\u041f\u043e\u0441\u043b\u0435 11 \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 4.18. \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 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 4.18 \u043f\u0440\u043e\u0434\u043b\u0438\u0442\u0441\u044f \u0434\u043e 16 \u043c\u0430\u044f 2025 \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 16 \u043d\u043e\u044f\u0431\u0440\u044f 2026 \u0433\u043e\u0434\u0430. \u041a\u043b\u044e\u0447\u0435\u0432\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 Xen 4.18: \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u044b \u043d\u0430\u0447\u0430\u043b\u044c\u043d\u044b\u0435","og:url":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/vypusk-gipervizora-xen-4-18","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":"2023-11-21T13:10:42+00:00","article:modified_time":"2023-11-21T13:10:42+00:00","article:publisher":"https:\/\/www.facebook.com\/prohoster","article:author":"https:\/\/www.facebook.com\/prohoster"},"aioseo_meta_data":[],"gt_translate_keys":[{"key":"link","format":"url"}],"_links":{"self":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts\/111676","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/comments?post=111676"}],"version-history":[{"count":0,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/posts\/111676\/revisions"}],"wp:attachment":[{"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/media?parent=111676"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/categories?post=111676"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/prohoster.info\/it\/wp-json\/wp\/v2\/tags?post=111676"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}