{"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\/fr\/blog\/news\/vypusk-gipervizora-xen-4-19","title":{"rendered":"Sortie de l'hyperviseur Xen 4.19","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Apr\u00e8s 8 mois de d\u00e9veloppement, la version gratuite de l'hyperviseur Xen 4.19 a \u00e9t\u00e9 publi\u00e9e. Des entreprises telles qu'Amazon, Arm, EPAM Systems et AMD ont particip\u00e9 au d\u00e9veloppement de cette nouvelle version. La formation des mises \u00e0 jour de la branche Xen 4.19 se poursuivra jusqu'en f\u00e9vrier 2026, et la publication des correctifs de vuln\u00e9rabilit\u00e9s jusqu'en ao\u00fbt 2027.      <\/p>\n<p>Changements cl\u00e9s dans Xen 4.19 :   <\/p>\n<ul>\n<li class=\"l\"> Pour les syst\u00e8mes bas\u00e9s sur l'architecture ARM, un support a \u00e9t\u00e9 ajout\u00e9 pour le m\u00e9canisme d'\u00e9change de donn\u00e9es asynchrone \u00ab FF-A Notifications \u00bb, d\u00e9crit dans la sp\u00e9cification FF-A (Firmware Framework for Arm A-profile). Il est d\u00e9sormais possible d'ajouter et de supprimer dynamiquement des n\u0153uds dans l'arbre de p\u00e9riph\u00e9riques Xen \u00e0 l'aide de fichiers .dtbo.\n<li class=\"l\"> Pour les syst\u00e8mes bas\u00e9s sur l'architecture x86, un nouveau pilote de contr\u00f4leur d'interruptions x2APIC a \u00e9t\u00e9 ajout\u00e9, utilisant le mode d'adressage logique (Cluster Logical) pour les interruptions internes (IPI, inter-processor interrupt) et le mode d'adressage physique pour les interruptions externes.\n<li class=\"l\"> Le support des processeurs Intel XeonPhi a \u00e9t\u00e9 d\u00e9clar\u00e9 obsol\u00e8te et sera supprim\u00e9 dans la prochaine version.\n<li class=\"l\"> La virtualisation PVH pour dom0 a \u00e9t\u00e9 reclassifi\u00e9e en \u00ab support\u00e9e avec r\u00e9serves \u00bb, combinant des \u00e9l\u00e9ments des modes de paravirtualisation (PV) pour les entr\u00e9es\/sorties, la gestion des interruptions, l'organisation du d\u00e9marrage et l'interaction avec le mat\u00e9riel, avec l'utilisation de la virtualisation compl\u00e8te (HVM) pour restreindre les instructions privil\u00e8ges, l'isolement des appels syst\u00e8me et la virtualisation des tables de pages m\u00e9moire. Dans PVH\/HVM, le support du mappage de pages m\u00e9moire \u00e9trang\u00e8res (\u00ab foreign pages \u00bb) a \u00e9t\u00e9 ajout\u00e9, permettant l'utilisation de QEMU stubdomain pour isoler et g\u00e9rer des p\u00e9riph\u00e9riques en mode PVH. Des optimisations ont \u00e9t\u00e9 apport\u00e9es pour acc\u00e9l\u00e9rer le d\u00e9marrage avec PVH. La configuration XENFEAT_hvm_pirqs a \u00e9t\u00e9 ajout\u00e9e, permettant d'activer s\u00e9lectivement le support pIRQ pour les syst\u00e8mes invit\u00e9s ex\u00e9cut\u00e9s en mode HVM (virtualisation compl\u00e8te).\n<li class=\"l\"> Un nouveau backend 9pfs a \u00e9t\u00e9 ajout\u00e9, permettant \u00e0 une machine virtuelle d'acc\u00e9der \u00e0 une autre via le syst\u00e8me de fichiers r\u00e9seau Plan 9. Ce nouveau backend s'ex\u00e9cute en tant que processus\u540e\u53f0 dans l'environnement h\u00f4te (dom0). Le backend est d\u00e9j\u00e0 utilis\u00e9 dans Xenstore-stubdom pour un support complet de la tra\u00e7abilit\u00e9 de Xenstore.\n<li class=\"l\"> Le nombre maximum de CPU utilis\u00e9s dans Xen a \u00e9t\u00e9 augment\u00e9 de 4095 \u00e0 16383.\n<li class=\"l\"> Lors de la compilation avec systemd (.\/configure \u2014enable-systemd), la biblioth\u00e8que libsystemd a \u00e9t\u00e9 exclue des d\u00e9pendances de construction (le support de systemd-notify est r\u00e9alis\u00e9 via sa propre biblioth\u00e8que r\u00e9duite).\n<li class=\"l\"> Pour analyser les traces pour les CPU AMD dans xenalyze, il n'est plus n\u00e9cessaire d'utiliser l'option \u00ab --svm-mode \u00bb.\n<li class=\"l\"> La mise en \u0153uvre des exigences pour le d\u00e9veloppement de programmes s\u00fbrs et fiables en C, \u00e9nonc\u00e9es dans les sp\u00e9cifications MISRA-C pour les syst\u00e8mes critiques, a \u00e9t\u00e9 poursuivie.\n<li class=\"l\"> Le d\u00e9veloppement des ports pour les architectures RISC-V et Power (ppc64le) a \u00e9t\u00e9 poursuivi.       <\/ul>\n<p>Source : <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 5.0.3 - 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