{"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\/sk\/blog\/news\/vypusk-gipervizora-xen-4-19","title":{"rendered":"Vydanie hyperv\u00edzora Xen 4.19","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Po 8 mesiacoch v\u00fdvoja bol zverejnen\u00fd release vo\u013en\u00e9ho hypervisoru Xen 4.19. Na v\u00fdvoji nov\u00e9ho vydania sa podie\u013eali firmy ako Amazon, Arm, EPAM Systems a AMD. Tvorba aktualiz\u00e1ci\u00ed pre vetvu Xen 4.19 potrv\u00e1 do febru\u00e1ra 2026, zatia\u013e \u010do publik\u00e1cia opr\u00e1v zranite\u013enost\u00ed potrv\u00e1 do augusta 2027.      <\/p>\n<p>K\u013e\u00fa\u010dov\u00e9 zmeny v Xen 4.19:   <\/p>\n<ul>\n<li class=\"l\"> Pre syst\u00e9my zalo\u017een\u00e9 na architekt\u00fare ARM bola pridan\u00e1 podpora mechanizmu asynchr\u00f3nneho prenosu d\u00e1t \u201eFF-A Notifications\u201c, ako je op\u00edsan\u00e9 v \u0161pecifik\u00e1cii FF-A (Firmware Framework for Arm A-profile). Bola implementovan\u00e1 mo\u017enos\u0165 dynamick\u00e9ho prid\u00e1vania a odstra\u0148ovania uzlov v Xen device tree pomocou s\u00faborov .dtbo.\n<li class=\"l\"> Pre syst\u00e9my zalo\u017een\u00e9 na architekt\u00fare x86 bol pridan\u00fd nov\u00fd ovl\u00e1da\u010d  riadi\u010da preru\u0161enia x2APIC, ktor\u00fd vyu\u017e\u00edva re\u017eim logickej adres\u00e1cie (Cluster Logical) pre vn\u00fatorn\u00e9 preru\u0161enia (IPI, inter-process interrupt) a re\u017eim fyzickej adres\u00e1cie pre vonkaj\u0161ie preru\u0161enia.\n<li class=\"l\"> Podpora procesorov Intel XeonPhi bola vyhl\u00e1sen\u00e1 za zastaran\u00fa a bude ukon\u010den\u00e1 v \u010fal\u0161om vydan\u00ed.\n<li class=\"l\"> Re\u017eim virtualiz\u00e1cie PVH pre dom0 bol presunut\u00fd do kateg\u00f3rie \u201epodporovan\u00fdch s obmedzeniami\u201c, pri\u010dom kombinuje prvky re\u017eimov paravirtualiz\u00e1cie (PV) pre vstup\/v\u00fdstup, spracovanie preru\u0161enia, organiz\u00e1ciu sp\u00fa\u0161\u0165ania a interakciu s hardv\u00e9rom, pri\u010dom vyu\u017e\u00edva pln\u00fa virtualiz\u00e1ciu (HVM) na obmedzenie privilegovan\u00fdch in\u0161trukci\u00ed, izol\u00e1ciu syst\u00e9mov\u00fdch volan\u00ed a virtualiz\u00e1ciu tabuliek str\u00e1nok pam\u00e4te. Do PVH\/HVM bola pridan\u00e1 podpora mapovania cudz\u00edch str\u00e1nok pam\u00e4te (\u201eforeign pages\u201c), \u010do umo\u017e\u0148uje vyu\u017e\u00edvanie QEMU stubdomain na izol\u00e1ciu a spr\u00e1vu zariaden\u00ed v re\u017eime PVH. Boli vykonan\u00e9 optimaliz\u00e1cie na zr\u00fdchlenie sp\u00fa\u0161\u0165ania pri pou\u017eit\u00ed PVH. Pridan\u00e9 nastavenie XENFEAT_hvm_pirqs umo\u017e\u0148uje selekt\u00edvne aktivovanie podpory pIRQ pre hos\u0165uj\u00face syst\u00e9my be\u017eiace v re\u017eime HVM (pln\u00e1 virtualiz\u00e1cia).\n<li class=\"l\"> Bol pridan\u00fd nov\u00fd backend 9pfs, ktor\u00fd umo\u017e\u0148uje pou\u017e\u00edva\u0165 sie\u0165ov\u00fd s\u00faborov\u00fd syst\u00e9m Plan 9 na pr\u00edstup jednej virtu\u00e1lnej ma\u0161iny k druhej. Nov\u00fd backend be\u017e\u00ed ako proces na pozad\u00ed na strane hostite\u013esk\u00e9ho prostredia (dom0). Backend je u\u017e zapojen\u00fd v Xenstore-stubdom na pln\u00fa podporu trasovania Xenstore.\n<li class=\"l\"> Maxim\u00e1lny po\u010det CPU pou\u017e\u00edvan\u00fdch v Xen bol zv\u00fd\u0161en\u00fd z 4095 na 16383.\n<li class=\"l\"> Pri kompil\u00e1cii so systemd (.\/configure \u2014enable-systemd) bola medzi z\u00e1vislos\u0165ami z buildovania vyl\u00fa\u010den\u00e1 kni\u017enica libsystemd (podpora systemd-notify je implementovan\u00e1 cez vlastn\u00fa z\u00fa\u017een\u00fa kni\u017enicu).\n<li class=\"l\"> Na anal\u00fdzu trasovan\u00ed pre CPU AMD v xenalyze u\u017e nie je potrebn\u00e9 pou\u017e\u00edva\u0165 mo\u017enos\u0165 \u201e\u2014svm-mode\u201c.\n<li class=\"l\"> Pokra\u010dovalo sa v implement\u00e1cii po\u017eiadaviek na v\u00fdvoj bezpe\u010dn\u00e9ho a spo\u013eahliv\u00e9ho softv\u00e9ru v jazyku C, formulovan\u00fdch v \u0161pecifik\u00e1ci\u00e1ch MISRA-C pre kriticky d\u00f4le\u017eit\u00e9 syst\u00e9my.\n<li class=\"l\"> Pokra\u010doval rozvoj portov pre architekt\u00fary RISC-V a Power (ppc64le).       <\/ul>\n<p>Zdroj: <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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