{"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\/cs\/blog\/news\/vypusk-gipervizora-xen-4-19","title":{"rendered":"Vyd\u00e1n\u00ed hypervizoru Xen 4.19","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Po 8 m\u011bs\u00edc\u00edch v\u00fdvoje byl zve\u0159ejn\u011bn vyd\u00e1n\u00ed svobodn\u00e9ho hypervizoru Xen 4.19. Na v\u00fdvoji nov\u00e9 verze se pod\u00edlely spole\u010dnosti jako Amazon, Arm, EPAM Systems a AMD. Tvorba aktualizac\u00ed pro v\u011btev Xen 4.19 potrv\u00e1 do \u00fanora 2026 a publikace oprav bezpe\u010dnostn\u00edch zranitelnost\u00ed do srpna 2027.      <\/p>\n<p>Kl\u00ed\u010dov\u00e9 zm\u011bny v Xen 4.19:   <\/p>\n<ul>\n<li class=\"l\"> Byly p\u0159id\u00e1ny funkce asynchronn\u00ed v\u00fdm\u011bny dat \u201eFF-A Notifications\u201c pro syst\u00e9my zalo\u017een\u00e9 na architektu\u0159e ARM, jak je pops\u00e1no ve specifikaci FF-A (Firmware Framework for Arm A-profile). Byla implementov\u00e1na mo\u017enost dynamick\u00e9ho p\u0159id\u00e1v\u00e1n\u00ed a odstra\u0148ov\u00e1n\u00ed uzl\u016f v Xen device tree pomoc\u00ed soubor\u016f .dtbo.\n<li class=\"l\"> Pro syst\u00e9my zalo\u017een\u00e9 na architektu\u0159e x86 byl p\u0159id\u00e1n nov\u00fd ovlada\u010d p\u0159eru\u0161ovac\u00edho \u0159adi\u010de x2APIC, kter\u00fd pou\u017e\u00edv\u00e1 re\u017eim logick\u00e9 adresace (Cluster Logical) pro intern\u00ed p\u0159eru\u0161en\u00ed (IPI, inter-processor interrupt) a re\u017eim fyzick\u00e9 adresace pro extern\u00ed p\u0159eru\u0161en\u00ed.\n<li class=\"l\"> Podpora procesor\u016f Intel XeonPhi byla ozna\u010dena jako zastaral\u00e1 a bude ukon\u010dena v dal\u0161\u00edm vyd\u00e1n\u00ed.\n<li class=\"l\"> Re\u017eim virtualizace PVH pro dom0 byl p\u0159eveden do kategorie \u201epodporovan\u00fdch s v\u00fdhradami\u201c, kombinuje prvky re\u017eim\u016f paravirtualizace (PV) pro I\/O, zpracov\u00e1n\u00ed p\u0159eru\u0161en\u00ed, organizaci zav\u00e1d\u011bn\u00ed a interakci s hardwarem, p\u0159i\u010dem\u017e se pou\u017e\u00edv\u00e1 pln\u00e1 virtualizace (HVM) pro omezen\u00ed privilegovan\u00fdch instrukc\u00ed, izolaci syst\u00e9mov\u00fdch vol\u00e1n\u00ed a virtualizaci tabulek str\u00e1nek pam\u011bti. Do PVH\/HVM byla p\u0159id\u00e1na podpora mapov\u00e1n\u00ed ciz\u00edch pam\u011b\u0165ov\u00fdch str\u00e1nek (\u201eforeign pages\u201c), co\u017e umo\u017e\u0148uje pou\u017e\u00edt QEMU stubdomain pro izolaci a spr\u00e1vu za\u0159\u00edzen\u00ed v re\u017eimu PVH. Byla provedena optimalizace zrychluj\u00edc\u00ed na\u010d\u00edt\u00e1n\u00ed p\u0159i pou\u017eit\u00ed PVH. P\u0159id\u00e1no nastaven\u00ed XENFEAT_hvm_pirqs, kter\u00e9 umo\u017e\u0148uje selektivn\u011b zapnout podporu pIRQ pro hostitelsk\u00e9 syst\u00e9my b\u011b\u017e\u00edc\u00ed v re\u017eimu HVM (pln\u00e1 virtualizace).\n<li class=\"l\"> Byl p\u0159id\u00e1n nov\u00fd backend 9pfs, kter\u00fd umo\u017e\u0148uje pou\u017e\u00edvat s\u00ed\u0165ov\u00fd souborov\u00fd syst\u00e9m Plan 9 pro p\u0159\u00edstup jedn\u00e9 virtu\u00e1ln\u00ed stroje k jin\u00e9. Nov\u00fd backend b\u011b\u017e\u00ed jako pozad\u00ed proces na stran\u011b hostitelsk\u00e9ho prost\u0159ed\u00ed (dom0). Backend je ji\u017e vyu\u017e\u00edv\u00e1n v Xenstore-stubdom pro plnou podporu sledov\u00e1n\u00ed Xenstore.\n<li class=\"l\"> Maxim\u00e1ln\u00ed po\u010det CPU pou\u017e\u00edvan\u00fdch v Xen byl zv\u00fd\u0161en z 4095 na 16383.\n<li class=\"l\"> P\u0159i sestavov\u00e1n\u00ed se systemd (.\/configure \u2014enable-systemd) byla z v\u00fdvojov\u00fdch z\u00e1vislost\u00ed vylou\u010dena knihovna libsystemd (podpora systemd-notify byla implementov\u00e1na prost\u0159ednictv\u00edm vlastn\u00ed zjednodu\u0161en\u00e9 knihovny).\n<li class=\"l\"> Pro anal\u00fdzu trasov\u00e1n\u00ed pro CPU AMD v xenalyze ji\u017e nen\u00ed nutn\u00e9 pou\u017e\u00edvat volbu \u201e\u2014svm-mode\u201c.\n<li class=\"l\"> Byla pokra\u010dov\u00e1na realizace po\u017eadavk\u016f na v\u00fdvoj bezpe\u010dn\u00fdch a spolehliv\u00fdch aplikac\u00ed v jazyce C, formulovan\u00fdch ve specifikac\u00edch MISRA-C pro kritick\u00e9 syst\u00e9my.\n<li class=\"l\"> Pokra\u010duje v\u00fdvoj port\u016f pro architektury 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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