{"id":118740,"date":"2024-08-01T03:43:00","date_gmt":"2024-08-01T01:43:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-gipervizora-xen-4-19"},"modified":"2024-08-01T03:43:00","modified_gmt":"2024-08-01T01:43:00","slug":"vypusk-gipervizora-xen-4-19","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/news\/vypusk-gipervizora-xen-4-19","title":{"rendered":"Uscita del hypervisor Xen 4.19","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dopo 8 mesi di sviluppo \u00e8 stata pubblicata la versione libera del hypervisor Xen 4.19. Alla realizzazione della nuova versione hanno partecipato aziende come Amazon, Arm, EPAM Systems e AMD. La formazione degli aggiornamenti per la serie Xen 4.19 continuer\u00e0 fino a febbraio 2026, mentre la pubblicazione delle correzioni delle vulnerabilit\u00e0 proseguir\u00e0 fino ad agosto 2027.      <\/p>\n<p>Modifiche principali in Xen 4.19:   <\/p>\n<ul>\n<li class=\"l\"> Per i sistemi basati su architettura ARM \u00e8 stata aggiunta la supporto per il meccanismo di scambio dati asincrono \u00abFF-A Notifications\u00bb, descritto nella specifica FF-A (Firmware Framework for Arm A-profile). \u00c8 stata implementata la possibilit\u00e0 di aggiungere e rimuovere dinamicamente nodi nell'albero dei dispositivi Xen tramite file .dtbo.\n<li class=\"l\"> Per i sistemi basati sull'architettura x86 \u00e8 stata aggiunta una nuova driver per il controller delle interruzioni x2APIC, che utilizza la modalit\u00e0 di indirizzamento logico (Cluster Logical) per le interruzioni interne (IPI, inter-processor interrupt) e la modalit\u00e0 di indirizzamento fisico per le interruzioni esterne.\n<li class=\"l\"> La supporto per i processori Intel XeonPhi \u00e8 stata dichiarata obsoleta e verr\u00e0 interrotta nella prossima versione.\n<li class=\"l\"> Il modo di virtualizzazione PVH per dom0 \u00e8 stato classificato come \u00absupportato con riserve\u00bb, combinando elementi dei modi di paravirtualizzazione (PV) per input\/output, gestione delle interruzioni, avvio e interazione hardware, utilizzando la virtualizzazione completa (HVM) per limitare le istruzioni privilegiate, isolare le chiamate di sistema e virtualizzare le tabelle delle pagine di memoria. In PVH\/HVM \u00e8 stata aggiunta la supporto per il mapping delle pagine di memoria straniere (\u00abforeign pages\u00bb), che consente di utilizzare QEMU stubdomain per isolare e gestire i dispositivi in modalit\u00e0 PVH. Sono state effettuate ottimizzazioni che accelerano l'avvio quando si utilizza PVH. \u00c8 stata aggiunta l'impostazione XENFEAT_hvm_pirqs, che consente di abilitare selettivamente il supporto pIRQ per i sistemi guest in esecuzione in modalit\u00e0 HVM (virtualizzazione completa).\n<li class=\"l\"> \u00c8 stato aggiunto un nuovo backend 9pfs, che consente di utilizzare il file system di rete Plan 9 per l'accesso di una macchina virtuale a un'altra. Il nuovo backend viene eseguito come processo in background nell'ambiente host (dom0). Il backend \u00e8 gi\u00e0 stato utilizzato in Xenstore-stubdom per il pieno supporto del tracciamento di Xenstore.\n<li class=\"l\"> Il numero massimo di CPU utilizzabili in Xen \u00e8 aumentato da 4095 a 16383.\n<li class=\"l\"> Durante la costruzione con systemd (.\/configure \u2014enable-systemd), la libreria libsystemd \u00e8 stata esclusa dalle dipendenze di costruzione (il supporto per systemd-notify \u00e8 stato implementato tramite una propria libreria ridotta).\n<li class=\"l\"> Per analizzare le tracce per CPU AMD in xenalyze non \u00e8 pi\u00f9 necessario utilizzare l'opzione \u00ab\u2014svm-mode\u00bb.\n<li class=\"l\"> Proseguita l'attuazione dei requisiti per lo sviluppo di software sicuri e affidabili in linguaggio C, formulati nelle specifiche MISRA-C per sistemi critici.\n<li class=\"l\"> Continuato lo sviluppo dei port per le architetture RISC-V e Power (ppc64le).       <\/ul>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=61640\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 8 \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 4.19. \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, 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 4.19 \u043f\u0440\u043e\u0434\u043b\u0438\u0442\u0441\u044f \u0434\u043e \u0444\u0435\u0432\u0440\u0430\u043b\u044f 2026 \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 \u0430\u0432\u0433\u0443\u0441\u0442\u0430 2027 \u0433\u043e\u0434\u0430. \u041a\u043b\u044e\u0447\u0435\u0432\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 Xen 4.19: \u0414\u043b\u044f \u0441\u0438\u0441\u0442\u0435\u043c \u043d\u0430 \u0431\u0430\u0437\u0435 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u044b ARM [&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-118740","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - 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