{"id":106084,"date":"2022-12-15T13:06:25","date_gmt":"2022-12-15T11:06:25","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-emulyatora-qemu-7-2"},"modified":"2022-12-15T13:06:25","modified_gmt":"2022-12-15T11:06:25","slug":"vypusk-emulyatora-qemu-7-2","status":"publish","type":"post","link":"https:\/\/prohoster.info\/cs\/blog\/news\/vypusk-emulyatora-qemu-7-2","title":{"rendered":"Vyd\u00e1n\u00ed emul\u00e1toru QEMU 7.2","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Byl vyd\u00e1n projekt QEMU 7.2. Jako emul\u00e1tor umo\u017e\u0148uje QEMU spustit program, kter\u00fd byl zkompilov\u00e1n pro jednu hardwarovou platformu, na syst\u00e9mu s \u00fapln\u011b jinou architekturou, nap\u0159\u00edklad spustit aplikaci pro ARM na po\u010d\u00edta\u010di kompatibiln\u00edm s x86. V re\u017eimu virtualizace m\u00e1 QEMU v\u00fdkon k\u00f3du b\u011b\u017e\u00edc\u00edho v izolovan\u00e9m prost\u0159ed\u00ed bl\u00edzk\u00fd hardwarov\u00e9mu syst\u00e9mu d\u00edky p\u0159\u00edm\u00e9mu prov\u00e1d\u011bn\u00ed instrukc\u00ed na CPU a zapojen\u00ed hypervisoru Xen nebo modulu KVM.       <\/p>\n<p>Projekt byl p\u016fvodn\u011b vytvo\u0159en Fabrice Bellardem s c\u00edlem poskytnout mo\u017enost spou\u0161t\u011bt spustiteln\u00e9 soubory Linux zkompilovan\u00e9 pro platformu x86 na architektur\u00e1ch odli\u0161n\u00fdch od x86. B\u011bhem let v\u00fdvoje byla p\u0159id\u00e1na podpora pln\u00e9 emulace pro 14 hardwarov\u00fdch architektur a po\u010det emulovan\u00fdch hardwarov\u00fdch za\u0159\u00edzen\u00ed p\u0159ekro\u010dil 400. P\u0159i p\u0159\u00edprav\u011b verze 7.2 bylo provedeno v\u00edce ne\u017e 1800 zm\u011bn od 205 v\u00fdvoj\u00e1\u0159\u016f.     <\/p>\n<p>Hlavn\u00ed vylep\u0161en\u00ed p\u0159idan\u00e1 do QEMU 7.2:   <\/p>\n<ul>\n<li class=\"l\"> V emul\u00e1toru architektury x86 byla v klasick\u00e9m gener\u00e1toru k\u00f3du TCG p\u0159id\u00e1na podpora instrukc\u00ed AVX, AVX2, F16C, FMA3 a VAES, a tak\u00e9 byla provedena optimalizace v\u00fdkonu spojen\u00e1 s pou\u017e\u00edv\u00e1n\u00edm instrukc\u00ed SSE. Pro <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/cs\/vps\/abuzoustojchivye-vps\/\"   title=\"KVM\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4417\">KVM<\/a> Byla p\u0159id\u00e1na podpora mechanismu sledov\u00e1n\u00ed v\u00fdstupu z virtu\u00e1ln\u00edho stroje (&#171;notify vmexit&#187;), kter\u00fd umo\u017e\u0148uje obej\u00edt chyby v CPU, kter\u00e9 mohou v\u00e9st k zamrznut\u00ed.\n<li class=\"l\"> V emul\u00e1toru ARM byla implementov\u00e1na podpora CPU Cortex-A35 a roz\u0161\u00ed\u0159en\u00ed procesoru ETS (Enhanced Translation Synchronization), PMUv3p5 (PMU Extensions 3.5), GTG (Guest Translation Granule 4KB, 16KB, 64KB), HAFDBS (hardwarov\u00e9 \u0159\u00edzen\u00ed p\u0159\u00edznaku p\u0159\u00edstupu a stavu &#171;dirty&#187;) a E0PD (prevence p\u0159\u00edstupu EL0 k odd\u011blen\u00fdm map\u00e1m adres).\n<li class=\"l\"> V emul\u00e1toru LoongArch byla p\u0159id\u00e1na podpora fw_cfg DMA, hork\u00e9ho p\u0159ipojen\u00ed pam\u011bti a emulace za\u0159\u00edzen\u00ed TPM (Trusted Platform Module).\n<li class=\"l\"> V emul\u00e1toru architektury OpenRISC byla implementov\u00e1na platforma &#8216;virt&#8217; pro testov\u00e1n\u00ed za\u0159\u00edzen\u00ed a pou\u017eit\u00ed v syst\u00e9mech kontinu\u00e1ln\u00ed integrace. Byla zavedena podpora pro v\u00edcetr\u017en\u00e9 vykon\u00e1v\u00e1n\u00ed klasick\u00e9ho gener\u00e1toru k\u00f3du TCG (Tiny Code Generator).\n<li class=\"l\"> V emul\u00e1toru architektury RISC-V v emulovan\u00fdch stroj\u00edch &#8216;virt&#8217; byla implementov\u00e1na mo\u017enost na\u010d\u00edt\u00e1n\u00ed firmware z pflash v S-re\u017eimu (S-mode). Byla vylep\u0161ena pr\u00e1ce s device tree.\n<li class=\"l\"> Emul\u00e1tor architektury 390x nyn\u00ed podporuje roz\u0161\u00ed\u0159en\u00ed MSA5 (Message-Security-Assist Extension 5 s instrukc\u00ed PRNO pro generov\u00e1n\u00ed pseudon\u00e1hodn\u00fdch \u010d\u00edsel), instrukce KIMD\/KLM (implementace SHA-512) a roz\u0161\u00ed\u0159enou interpretaci zPCI pro hostitelsk\u00e9 syst\u00e9my zalo\u017een\u00e9 na hypervizoru KVM.\n<li class=\"l\"> V backendu pro pr\u00e1ci s pam\u011bt\u00ed bylo zaji\u0161t\u011bno p\u0159edb\u011b\u017en\u00e9 p\u0159id\u011blen\u00ed pam\u011bti s ohledem na architekturu NUMA.\n<li class=\"l\"> Byla pos\u00edlena kontrola hlavi\u010dek \u0161ifrovan\u00fdch blokov\u00fdch za\u0159\u00edzen\u00ed LUKS a p\u0159id\u00e1na mo\u017enost vytv\u00e1\u0159et obrazy LUKS v macOS.\n<li class=\"l\"> V backendu 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 ma\u0161iny k jin\u00e9, do\u0161lo k p\u0159echodu na pou\u017e\u00edv\u00e1n\u00ed hash tabulky GHashTable v tabulce identifik\u00e1tor\u016f, co\u017e v n\u011bkter\u00fdch situac\u00edch vedlo k zv\u00fd\u0161en\u00ed v\u00fdkonu o 6-12kr\u00e1t.\n<li class=\"l\"> Byly p\u0159id\u00e1ny nov\u00e9 netdev backendy stream a dgram.\n<li class=\"l\"> V agentu pro hostitelsk\u00e9 syst\u00e9my zalo\u017een\u00e9 na architektu\u0159e ARM byla p\u0159id\u00e1na podpora FreeBSD.\n<li class=\"l\"> Ve verz\u00edch GUI pro macOS byla umo\u017en\u011bna integrace rozhran\u00ed zalo\u017een\u00fdch na Cocoa a SDL\/GTK do jednoho spustiteln\u00e9ho souboru.\n<li class=\"l\"> Byl odstran\u011bn vestav\u011bn\u00fd submodul &#171;slirp&#187;, m\u00edsto kter\u00e9ho se doporu\u010duje pou\u017e\u00edvat syst\u00e9movou knihovnu libslirp.\n<li class=\"l\"> Vzhledem k nemo\u017enosti testov\u00e1n\u00ed byla vyhl\u00e1\u0161ena za zastaralou podpora hostitelsk\u00fdch syst\u00e9m\u016f s 32bitov\u00fdmi procesory MIPS, kter\u00e9 pou\u017e\u00edvaj\u00ed po\u0159ad\u00ed bajt\u016f &#171;Big endian&#187;.    <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=58327\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0440\u0435\u043b\u0438\u0437 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 QEMU 7.2. \u0412 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u044d\u043c\u0443\u043b\u044f\u0442\u043e\u0440\u0430 QEMU \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u0435\u0442 \u0437\u0430\u043f\u0443\u0441\u0442\u0438\u0442\u044c \u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c\u0443, \u0441\u043e\u0431\u0440\u0430\u043d\u043d\u0443\u044e \u0434\u043b\u044f \u043e\u0434\u043d\u043e\u0439 \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u043f\u043b\u0430\u0442\u0444\u043e\u0440\u043c\u044b \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0441 \u0441\u043e\u0432\u0435\u0440\u0448\u0435\u043d\u043d\u043e \u0438\u043d\u043e\u0439 \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440\u043e\u0439, \u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0432\u044b\u043f\u043e\u043b\u043d\u0438\u0442\u044c \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u0435 \u0434\u043b\u044f ARM \u043d\u0430 x86-\u0441\u043e\u0432\u043c\u0435\u0441\u0442\u0438\u043c\u043e\u043c \u041f\u041a. \u0412 \u0440\u0435\u0436\u0438\u043c\u0435 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438 \u0432 QEMU \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u043a\u043e\u0434\u0430 \u0432 \u0438\u0437\u043e\u043b\u0438\u0440\u043e\u0432\u0430\u043d\u043d\u043e\u043c \u043e\u043a\u0440\u0443\u0436\u0435\u043d\u0438\u0438 \u0431\u043b\u0438\u0437\u043a\u0430 \u043a \u0430\u043f\u043f\u0430\u0440\u0430\u0442\u043d\u043e\u0439 \u0441\u0438\u0441\u0442\u0435\u043c\u0435 \u0437\u0430 \u0441\u0447\u0451\u0442 \u043f\u0440\u044f\u043c\u043e\u0433\u043e \u0432\u044b\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0438\u043d\u0441\u0442\u0440\u0443\u043a\u0446\u0438\u0439 \u043d\u0430 CPU \u0438 \u0437\u0430\u0434\u0435\u0439\u0441\u0442\u0432\u043e\u0432\u0430\u043d\u0438\u044f [&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-106084","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - aioseo.com -->\n\t<meta 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