{"id":100067,"date":"2021-04-30T16:23:15","date_gmt":"2021-04-30T14:23:15","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-emulyatora-qemu-6-0"},"modified":"2021-04-30T16:23:15","modified_gmt":"2021-04-30T14:23:15","slug":"vypusk-emulyatora-qemu-6-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sk\/blog\/news\/vypusk-emulyatora-qemu-6-0","title":{"rendered":"Vydanie emul\u00e1tora QEMU 6.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Bol uvo\u013enen\u00fd projekt QEMU 6.0. Ako emul\u00e1tor QEMU umo\u017e\u0148uje spusti\u0165 program, ktor\u00fd bol zostaven\u00fd pre jednu hardv\u00e9rov\u00fa platformu, na syst\u00e9me s \u00faplne inou architekt\u00farou, napr\u00edklad spusti\u0165 aplik\u00e1ciu pre ARM na po\u010d\u00edta\u010di kompatibilnom s x86. V re\u017eime virtualiz\u00e1cie je v\u00fdkon vykon\u00e1vania k\u00f3du v izolovanom prostred\u00ed bl\u00edzky hardv\u00e9rovej s\u00fastave v\u010faka priamemu vykon\u00e1vaniu in\u0161trukci\u00ed na CPU a zapojeniu hyperv\u00edzora Xen alebo modulu KVM.       <\/p>\n<p>Projekt bol p\u00f4vodne vytvoren\u00fd Fabrice Bellard s cie\u013eom umo\u017eni\u0165 sp\u00fa\u0161\u0165anie zostaven\u00fdch spustite\u013en\u00fdch s\u00faborov Linux pre platformu x86 na architekt\u00farach odli\u0161n\u00fdch od x86. Po\u010das rokov v\u00fdvoja bola pridan\u00e1 podpora \u00faplnej emul\u00e1cie pre 14 hardv\u00e9rov\u00fdch architekt\u00far a po\u010det emulovan\u00fdch hardv\u00e9rov\u00fdch zariaden\u00ed presiahol 400. Pri pr\u00edprave verzie 6.0 bolo realizovan\u00fdch viac ako 3300 zmien od 268 v\u00fdvoj\u00e1rov.     <\/p>\n<p>K\u013e\u00fa\u010dov\u00e9 vylep\u0161enia pridan\u00e9 do QEMU 6.0:   <\/p>\n<ul>\n<li class=\"l\"> Emul\u00e1tor ovl\u00e1da\u010dov NVMe bol prisp\u00f4soben\u00fd \u0161pecifik\u00e1cii NVMe 1.4 a vybaven\u00fd experiment\u00e1lnou podporou z\u00f3novan\u00fdch n\u00e1zvov priestorov, multipath I\/O a priebe\u017en\u00e9ho \u0161ifrovania \u00fadajov na \u00falo\u017eisku.\n<li class=\"l\"> Pridan\u00e9 experiment\u00e1lne mo\u017enosti &#171;-machine x-remote&#187; a &#171;-device x-pci-proxy-dev&#187; na pre\u0165ahovanie emul\u00e1cie zariaden\u00ed do extern\u00fdch procesov. V tomto re\u017eime sa zatia\u013e podporuje len emul\u00e1cia SCSI adapt\u00e9ru lsi53c895.\n<li class=\"l\"> Pridan\u00e1 experiment\u00e1lna podpora pre vytv\u00e1ranie sn\u00edmok obsahu RAM.\n<li class=\"l\"> Pridan\u00fd FUSE modul na export blokov\u00fdch zariaden\u00ed, ktor\u00fd umo\u017e\u0148uje pripoji\u0165 sn\u00edmku stavu ak\u00e9hoko\u013evek blokov\u00e9ho zariadenia pou\u017e\u00edvan\u00e9ho v hostite\u013eskom syst\u00e9me. Export sa uskuto\u010d\u0148uje cez pr\u00edkaz QMP block-export-add alebo cez mo\u017enos\u0165 &#171;&#8212;export&#187; v n\u00e1stroji qemu-storage-daemon.\n<li class=\"l\"> Do emul\u00e1tora ARM bola pridan\u00e1 podpora architekt\u00fary ARMv8.1-M &#8216;Helium&#8217; a procesorov Cortex-M55, ako aj roz\u0161\u00edren\u00fdch in\u0161trukci\u00ed ARMv8.4 TTST, SEL2 a DIT. Pridan\u00e1 podpora ARM platforiem mps3-an524 a mps3-an547. Pre platformy xlnx-zynqmp, xlnx-versal, sbsa-ref, npcm7xx a sabrelite bola implementovan\u00e1 dodato\u010dn\u00e1 emul\u00e1cia zariaden\u00ed.\n<li class=\"l\"> Pre ARM v re\u017eimoch emul\u00e1cie na \u00farovni syst\u00e9mu a pou\u017e\u00edvate\u013esk\u00e9ho prostredia bola implementovan\u00e1 podpora roz\u0161\u00edrenia ARMv8.5 MTE (MemTag, roz\u0161\u00edrenie ozna\u010dovania pam\u00e4te), ktor\u00e9 umo\u017e\u0148uje priradi\u0165 zna\u010dky k ka\u017edej oper\u00e1cii alok\u00e1cie pam\u00e4te a zabezpe\u010di\u0165 pri pr\u00edstupe k pam\u00e4ti kontrolu ukazovate\u013ea, ktor\u00fd by mal by\u0165 spojen\u00fd s spr\u00e1vnou zna\u010dkou. Toto roz\u0161\u00edrenie sa m\u00f4\u017ee pou\u017ei\u0165 na blokovanie zneu\u017e\u00edvania zranite\u013enost\u00ed sp\u00f4soben\u00fdch pr\u00edstupom k u\u017e uvo\u013enen\u00fdm blokom pam\u00e4te, prete\u010den\u00edm vyrovn\u00e1vacej pam\u00e4te, pr\u00edstupmi pred inicializ\u00e1ciou a pou\u017eit\u00edm mimo aktu\u00e1lneho kontextu.\n<li class=\"l\"> V emul\u00e1tore architekt\u00fary 68k bola pridan\u00e1 podpora nov\u00e9ho typu emulovan\u00fdch strojov &#171;virt&#187;, ktor\u00e9 vyu\u017e\u00edvaj\u00fa pre optimaliz\u00e1ciu v\u00fdkonu zariadenia virtio.\n<li class=\"l\"> V emul\u00e1tore architekt\u00fary x86 bola pridan\u00e1 mo\u017enos\u0165 vyu\u017eitia technol\u00f3gie AMD SEV-ES (Secure Encrypted Virtualization) na \u0161ifrovanie registrov procesora pou\u017e\u00edvanej v hostite\u013eskom syst\u00e9me, \u010do rob\u00ed obsah registrov nepr\u00edstupn\u00fdm pre hostite\u013esk\u00e9 prostredie, pokia\u013e hostite\u013esk\u00fd syst\u00e9m v\u00fdslovne neposkytne k nim pr\u00edstup.\n<li class=\"l\"> V klasickom gener\u00e1tore k\u00f3du TCG (Tiny Code Generator) pri emul\u00e1cii syst\u00e9mov x86 bola implementovan\u00e1 podpora mechanizmu PKS (Protection Keys Supervisor), ktor\u00fd sa m\u00f4\u017ee pou\u017ei\u0165 na ochranu pr\u00edstupu k privilegovan\u00fdm str\u00e1nkam pam\u00e4te.\n<li class=\"l\"> V emul\u00e1tore architekt\u00fary MIPS bol pridan\u00fd nov\u00fd typ emulovan\u00fdch strojov &#171;virt&#187; s podporou \u010d\u00ednskych procesorov Loongson-3.\n<li class=\"l\"> V emul\u00e1tore architekt\u00fary PowerPC pre emulovan\u00e9 stroje &#171;powernv&#187; bola pridan\u00e1 podpora extern\u00fdch BMC kontrol\u00e9rov. Pre emulovan\u00e9 stroje pseries sa zabezpe\u010dilo informovanie o chyb\u00e1ch pri pokuse o hor\u00face odpojenie pam\u00e4te a CPU.\n<li class=\"l\"> Pridan\u00e1 podpora emul\u00e1cie procesorov Qualcomm Hexagon s DSP.\n<li class=\"l\"> V klasickom gener\u00e1tore k\u00f3du TCG (Tiny Code Generator) bola implementovan\u00e1 podpora hostite\u013esk\u00fdch prostred\u00ed macOS na syst\u00e9moch s nov\u00fdm ARM \u010dipom Apple M1.\n<li class=\"l\"> V emul\u00e1tore architekt\u00fary RISC-V pre dosky Microchip PolarFire bola implementovan\u00e1 podpora QSPI NOR flash.\n<li class=\"l\"> V emul\u00e1tore Tricore bola pridan\u00e1 podpora novej modelovej dosky TriBoard, emuluj\u00facej SoC Infineon TC27x.\n<li class=\"l\"> V emul\u00e1tore ACPI bola poskytnut\u00e1 mo\u017enos\u0165 priradi\u0165 sie\u0165ov\u00fdm adapt\u00e9rom v hostite\u013esk\u00fdch syst\u00e9moch n\u00e1zvy, ktor\u00e9 s\u00fa nez\u00e1visl\u00e9 od poradia pripojenia na zbernicu PCI.\n<li class=\"l\"> V virtiofs bola pridan\u00e1 podpora mo\u017enosti FUSE_KILLPRIV_V2 na zv\u00fd\u0161enie v\u00fdkonu hostite\u013esk\u00fdch syst\u00e9mov.\n<li class=\"l\"> Do VNC bola pridan\u00e1 podpora prieh\u013eadnosti kurzora a podpora \u0161k\u00e1lovania rozl\u00ed\u0161enia obrazovky na virtio-vga, zalo\u017een\u00e1 na ve\u013ekosti okna.\n<li class=\"l\"> Do QMP (QEMU Machine Protocol) bola pridan\u00e1 podpora asynchr\u00f3nneho paraleln\u00e9ho pr\u00edstupu pri vykon\u00e1van\u00ed \u00faloh z\u00e1lohovania.\n<li class=\"l\"> V USB emul\u00e1tore bola pridan\u00e1 mo\u017enos\u0165 uchov\u00e1vania prev\u00e1dzky, ktor\u00e1 sa vytv\u00e1ra pri pr\u00e1ci s USB zariadeniami, do samostatn\u00e9ho pcap s\u00faboru na n\u00e1sledn\u00e9 presk\u00famanie vo Wiresharku.\n<li class=\"l\"> Boli pridan\u00e9 nov\u00e9 QMP pr\u00edkazy load-snapshot, save-snapshot a delete-snapshot na spr\u00e1vu sn\u00edmok qcow2.\n<li class=\"l\"> V virtiofs boli odstr\u00e1nen\u00e9 zranite\u013enosti CVE-2020-35517 a CVE-2021-20263. Prv\u00fd probl\u00e9m umo\u017e\u0148uje pr\u00edstup k hostite\u013esk\u00e9mu prostrediu z hostite\u013esk\u00e9ho syst\u00e9mu vytvoren\u00edm privilegovan\u00e9ho pou\u017e\u00edvate\u013ea v hostite\u013eskom syst\u00e9me \u0161peci\u00e1lneho s\u00faboru zariaden\u00ed v adres\u00e1ri zdie\u013eanom s hostite\u013esk\u00fdm prostred\u00edm. Druh\u00fd probl\u00e9m je sp\u00f4soben\u00fd chybou pri spracovan\u00ed roz\u0161\u00edren\u00fdch atrib\u00fatov v mo\u017enosti &#8216;xattrmap&#8217; a m\u00f4\u017ee vies\u0165 k ignorovaniu resetovania pr\u00e1v na z\u00e1pis a zv\u00fd\u0161eniu privil\u00e9gi\u00ed v hostite\u013eskom syst\u00e9me.      <\/ul>\n<p>Zdroj: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55055\">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 6.0. \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-100067","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u0440\u0435\u043b\u0438\u0437 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 QEMU 6.0.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" href=\"https:\/\/prohoster.info\/sk\/blog\/news\/vypusk-emulyatora-qemu-6-0\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.4\" \/>\n\t\t<meta property=\"og:locale\" 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