{"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\/ro\/blog\/news\/vypusk-gipervizora-xen-4-18","title":{"rendered":"Lansarea hipervizorului Xen 4.18","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Dup\u0103 11 luni de dezvoltare, a fost lansat\u0103 versiunea liber\u0103 a hipervizorului Xen 4.18. La dezvoltarea noului release au participat companii precum Amazon, Arm, Bitdefender, Citrix, EPAM Systems \u0219i AMD. Formarea actualiz\u0103rilor pentru ramura Xen 4.18 va continua p\u00e2n\u0103 pe 16 mai 2025, iar publicarea corec\u021biilor pentru vulnerabilit\u0103\u021bi va dura p\u00e2n\u0103 pe 16 noiembrie 2026.      <\/p>\n<p>Modific\u0103ri cheie \u00een Xen 4.18:   <\/p>\n<ul>\n<li class=\"l\"> Au fost ad\u0103ugate implement\u0103rile ini\u021biale ale porturilor pentru arhitecturile RISC-V \u0219i Power (ppc64le). Au fost desf\u0103\u0219urate medii pentru testarea porturilor RISC-V \u0219i Power \u00een sistemul de integrare continu\u0103 GitLab CI.\n<li class=\"l\"> C\u00e2nd se lucreaz\u0103 pe sisteme ARM64, subsystemul de memorie Xen \u021bine cont de specifica\u021biile arhitecturii ARM. A fost ad\u0103ugat\u0103 suport experimental pentru instruc\u021biunile vectoriale SVE (Scalable Vector Extension). A fost ad\u0103ugat un instrumentar Arm Firmware Framework pentru arhitectura ARM A-profile (ARM Application-profile, FF-A). A fost ad\u0103ugat\u0103 o capacitate experimental\u0103 de ad\u0103ugare \u0219i eliminare dinamic\u0103 a nodurilor \u00een arborele de dispozitive Xen folosind fi\u0219iere .dtbo.\n<li class=\"l\"> Pe sistemele cu procesoare Intel, parametrul MSR_ARCH_CAPS este acum vizibil \u00een sistemele gazd\u0103 \u0219i poate fi configurat prin fi\u0219ierul de configurare al ma\u0219inii virtuale. Pe procesoarele lansate \u00eencep\u00e2nd cu 2019, parametrul MSR_ARCH_CAPS permite verificarea corec\u021biilor hardware aplicate pentru vulnerabilit\u0103\u021bile legate de execu\u021bia speculativ\u0103 a opera\u021biunilor.\n<li class=\"l\"> A fost ad\u0103ugat suport pentru extensia CPUID_USER_DIS (CPUID Faulting), introdus\u0103 \u00een a patra genera\u021bie de procesoare AMD EPYC pentru a controla vizibilitatea datelor CPUID din sistemul gazd\u0103 paravirtualizat.\n<li class=\"l\"> A fost ad\u0103ugat suport pentru extensiile ap\u0103rute \u00een procesoarele Intel bazate pe microarhitectura Sapphire Rapids:\n<ul>\n<li class=\"l\"> Pentru sistemele gazd\u0103 \u00een modul HVM \u0219i PVH, a fost ad\u0103ugat suport pentru mecanismul PKS (Protection Key Supervisor), care extinde capacit\u0103\u021bile de protec\u021bie a paginilor de memorie.\n<li class=\"l\"> Pentru a preveni oprirea total\u0103 a sistemului \u00een cazul problemelor cu bloc\u0103rile microarhitecturale, a fost activat mecanismul VM-Notify.\n<li class=\"l\"> A fost ad\u0103ugat\u0103 protec\u021bie \u00eempotriva bloc\u0103rii magistralei ca urmare a utiliz\u0103rii necorespunz\u0103toare a instruc\u021biunilor atomice \u00een sistemul gazd\u0103 (a fost activat rate-limit).    <\/ul>\n<li class=\"l\"> A fost ad\u0103ugat suport pentru instruc\u021biunile AVX512-FP16, ap\u0103rute \u00een CPU Intel pe baza microarhitecturii Granite Rapids.\n<li class=\"l\"> A fost ad\u0103ugat un driver cpufreq, care utilizeaz\u0103 mecanismul HWP (Hardware P-States) pentru a gestiona consumul de energie \u0219i frecven\u021ba procesoarelor Intel.\n<li class=\"l\"> A fost implementat suportul pentru executarea for\u021bat\u0103 a opera\u021biunilor sistemice \u00een modul DOITM (Data Operand Independent Timing Mode), care asigur\u0103 un timp constant de execu\u021bie a instruc\u021biunilor, independent de datele tratate \u00een aceste instruc\u021biuni.\n<li class=\"l\"> S-a continuat implementarea cerin\u021belor pentru dezvoltarea de programe sigure \u0219i fiabile \u00een limbajul C, formulate \u00een specifica\u021biile MISRA-C pentru sisteme critice. Num\u0103rul de directive MISRA-C implementate \u00een Xen a crescut de la 4 la 6, iar num\u0103rul regulilor de la 24 la 65 (\u00een total, specifica\u021bia con\u021bine 16 directive \u0219i 143 reguli).\n<li class=\"l\"> \u00cen instrumentele xl\/libxl a fost oferit\u0103 posibilitatea de a modifica set\u0103rile SMBIOS pentru sistemele gazd\u0103 \u00een modul HVM.\n<li class=\"l\"> Au fost ad\u0103ugate dou\u0103 noi hypercalls pentru a lega starea de lucru \u0219i regiunile temporale vCPU de adrese fizice, mai degrab\u0103 dec\u00e2t de adrese virtuale.          <\/ul>\n<p>Sursa: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=60153\">opennet.ro<\/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 \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 [&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-111676","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - 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