{"id":53931,"date":"2019-12-13T00:00:00","date_gmt":"2019-12-12T21:00:00","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/vypusk-emulyatora-qemu-4-2"},"modified":"2020-02-18T14:01:52","modified_gmt":"2020-02-18T11:01:52","slug":"vypusk-emulyatora-qemu-4-2","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/vypusk-emulyatora-qemu-4-2","title":{"rendered":"A QEMU 4.2 kiad\u00e1sa","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p><noindex><a rel=\"nofollow\" href=\"https:\/\/lists.nongnu.org\/archive\/html\/qemu-devel\/2019-12\/msg02579.html\">Bemutatva<\/a><\/noindex> a projekt kiad\u00e1s\u00e1t <noindex><a rel=\"nofollow\" href=\"http:\/\/wiki.qemu.org\/Download\">QEMU 4.2<\/a><\/noindex>. A QEMU emul\u00e1tork\u00e9nt lehet\u0151v\u00e9 teszi, hogy az egy adott hardverplatformra k\u00e9sz\u00fclt programokat teljesen elt\u00e9r\u0151 architekt\u00far\u00e1j\u00fa rendszeren futtassuk, p\u00e9ld\u00e1ul ARM alkalmaz\u00e1sokat x86 kompatibilis PC-n. A QEMU virtualiz\u00e1ci\u00f3s m\u00f3dj\u00e1ban a k\u00f3d v\u00e9grehajt\u00e1s\u00e1nak teljes\u00edtm\u00e9nye az elszigetelt k\u00f6rnyezetben k\u00f6zel \u00e1ll a nat\u00edv rendszerhez, mivel k\u00f6zvetlen\u00fcl a CPU utas\u00edt\u00e1sait hajtja v\u00e9gre, \u00e9s a Xen hypervisort vagy a KVM modult haszn\u00e1lja. <\/p>\n<p>A projektet eredetileg Fabrice Bellard alap\u00edtotta azzal a c\u00e9llal, hogy Linux bin\u00e1ris f\u00e1jlokat futtasson x86 architekt\u00far\u00e1ra \u00e9p\u00fcl\u0151 platformokon k\u00edv\u00fcli architekt\u00far\u00e1kon. Az \u00e9vek sor\u00e1n 14 hardverarchitekt\u00fara teljes emul\u00e1ci\u00f3s t\u00e1mogat\u00e1sa ker\u00fclt bevezet\u00e9sre, \u00e9s az emul\u00e1lt hardvereszk\u00f6z\u00f6k sz\u00e1ma meghaladta a 400-at. A 4.2-es verzi\u00f3 el\u0151k\u00e9sz\u00edt\u00e9se sor\u00e1n t\u00f6bb mint 2200 v\u00e1ltoz\u00e1st hajtottak v\u00e9gre 198 fejleszt\u0151t\u0151l. <\/p>\n<p>Kulcsok <noindex><a rel=\"nofollow\" href=\"http:\/\/wiki.qemu.org\/ChangeLog\/4.2\">fejleszt\u00e9sek<\/a><\/noindex>, amelyeket a QEMU 4.2-be vezettek be:\n<\/p>\n<ul>\n<li class=\"l\"> A klasszikus TCG (Tiny Code Generator) k\u00f3dgener\u00e1torban implement\u00e1lva lett a processzor utas\u00edt\u00e1sok \u00e9s a mem\u00f3riac\u00edmek figyel\u00e9s\u00e9re szolg\u00e1l\u00f3 pluginek t\u00e1mogat\u00e1sa;\n<li class=\"l\">  A blokk eszk\u00f6zilleszt\u0151ben <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/qemu\/qemu\/blob\/master\/qemu-nbd.c\">NBD<\/a><\/noindex> (H\u00e1l\u00f3zati Blokk Eszk\u00f6z) hat\u00e9konyabb m\u00e1sol\u00e1si k\u00e9relmek kezel\u00e9s\u00e9t val\u00f3s\u00edtotta meg olvas\u00e1skor (copy-on-read). Az NBD-szerver k\u00f3dja optimaliz\u00e1lva lett a ritka k\u00e9pek (\u00fcres helyekkel) m\u00e1sol\u00e1s\u00e1ra. \u00c1ltal\u00e1nos fejleszt\u00e9sek t\u00f6rt\u00e9ntek az NBD kliens \u00e9s szerver megval\u00f3s\u00edt\u00e1s\u00e1ban;\n<li class=\"l\"> N\u00f6velt\u00e9k a LUKS lemezek titkos\u00edt\u00e1s\u00e1nak teljes\u00edtm\u00e9ny\u00e9t AES-XTS algoritmus haszn\u00e1lat\u00e1val;\n<li class=\"l\"> A vfio-pci hozz\u00e1adta a &#171;failover_pair_id&#187; tulajdons\u00e1g t\u00e1mogat\u00e1s\u00e1t a VFIO eszk\u00f6z\u00f6k migr\u00e1ci\u00f3j\u00e1nak megk\u00f6nny\u00edt\u00e9se \u00e9rdek\u00e9ben.\n<li class=\"l\"> A virtio-mmio-ra a virtio-compatible 2 szabv\u00e1ny \u00e9s a virtio 1.1 specifik\u00e1ci\u00f3ban meghat\u00e1rozott csomagolt virtu\u00e1lis sorok mechanizmus\u00e1nak t\u00e1mogat\u00e1sa ker\u00fclt bevezet\u00e9sre (<noindex><a rel=\"nofollow\" href=\"https:\/\/docs.oasis-open.org\/virtio\/virtio\/v1.1\/csprd01\/virtio-v1.1-csprd01.html#x1-230005\">virtqueue<\/a><\/noindex>) a virtu\u00e1lis bemeneti\/kimeneti eszk\u00f6zzel t\u00f6rt\u00e9n\u0151 adatok cser\u00e9j\u00e9hez csomagolt m\u00f3dban;\n<li class=\"l\"> Az x86 architekt\u00fara emul\u00e1tor\u00e1ban \u00faj emul\u00e1lt g\u00e9pt\u00edpus, a &#171;microvm&#187; ker\u00fclt bevezet\u00e9sre, amely a PCI helyett virtio-mmio-t haszn\u00e1l a teljes\u00edtm\u00e9ny optimaliz\u00e1l\u00e1sa \u00e9rdek\u00e9ben. Megval\u00f3s\u00edtott\u00e1k a VMX be- \u00e9s kikapcsol\u00e1s\u00e1nak lehet\u0151s\u00e9g\u00e9t a &#171;-cpu&#187; z\u00e1szl\u00f3kon kereszt\u00fcl. T\u00e1mogat\u00e1st kaptak az AVX512 BFloat16 kiterjeszt\u00e9sek emul\u00e1l\u00e1s\u00e1hoz. T\u00e1mogat\u00e1s ny\u00fajtva az \u00faj Denverton (Atom alap\u00fa szerver SoC), Snowridge \u00e9s Dhyana CPU modellekhez. Stabiliz\u00e1lt\u00e1k a macOS Hypervisor Framework t\u00e1mogat\u00e1s\u00e1t (&#171;-accel hvf&#187;).\n<li class=\"l\"> Az ARM architekt\u00fara emul\u00e1tor\u00e1ban t\u00e1mogat\u00e1st kaptak az Aspeed AST2600 SoC emul\u00e1l\u00e1s\u00e1hoz (&#171;ast2600-evb&#187;). T\u00e1mogat\u00e1st ny\u00fajtanak a Semihosting 2.0 technol\u00f3gi\u00e1hoz STDOUT_STDERR\/EXIT_EXTENDED kiterjeszt\u00e9sekkel, amely lehet\u0151v\u00e9 teszi az emul\u00e1lt eszk\u00f6z sz\u00e1m\u00e1ra, hogy stdout, stderr \u00e9s stdin-t haszn\u00e1ljon f\u00e1jlok l\u00e9trehoz\u00e1s\u00e1hoz a gazdag\u00e9pen. A KVM-ben lehet\u0151s\u00e9g ny\u00edlt t\u00f6bb mint 256 CPU haszn\u00e1lat\u00e1ra, \u00e9s biztos\u00edtott\u00e1k a SVE SIMD utas\u00edt\u00e1sok t\u00e1mogat\u00e1s\u00e1t a virtu\u00e1lis g\u00e9pekben a t\u00edpus\u00fa &#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/qemu\/qemu\/blob\/master\/hw\/arm\/virt.c\">virt<\/a><\/noindex>&#187; mem\u00f3ria forr\u00f3 csatlakoz\u00e1s\u00e1nak t\u00e1mogat\u00e1s\u00e1ra. N\u00f6velt\u00e9k az emul\u00e1ci\u00f3 teljes\u00edtm\u00e9ny\u00e9t a TCG k\u00f3dgener\u00e1tor haszn\u00e1lat\u00e1val.\n<li class=\"l\"> A PowerPC architekt\u00fara emul\u00e1tor\u00e1ban lehet\u0151s\u00e9g ny\u00edlt a POWER9 utas\u00edt\u00e1sok, \u00fagy mint mffsce, mffscrn \u00e9s mffscrni emul\u00e1l\u00e1s\u00e1ra. A &#171;powernv&#187; emul\u00e1lt g\u00e9pekben hozz\u00e1adt\u00e1k a Homer \u00e9s OCC SRAM rendszereszk\u00f6z\u00f6k t\u00e1mogat\u00e1s\u00e1t.\n<li class=\"l\"> A RISC-V architekt\u00fara emul\u00e1tor\u00e1ban hozz\u00e1adt\u00e1k a &#171;-initrd&#187; opci\u00f3t \u00e9s a teljes architekt\u00fara \u00e1llapot\u00e1nak megtekint\u00e9s\u00e9nek lehet\u0151s\u00e9g\u00e9t a debuggerben.\n<li class=\"l\"> A s390 architekt\u00far\u00e1hoz tartoz\u00f3 emul\u00e1torban megval\u00f3sult az IEP (Instruction Execution Protection) utas\u00edt\u00e1sok t\u00e1mogat\u00e1sa;\n<li class=\"l\"> A 68k architekt\u00far\u00e1hoz tartoz\u00f3 emul\u00e1torban kezdeti emul\u00e1ci\u00f3s lehet\u0151s\u00e9g ker\u00fclt bevezet\u00e9sre a Macintosh Quadro 800 \u00e9s a klasszikus NeXTcube rendszerekhez;\n<li class=\"l\"> Az xtensa architekt\u00fara emul\u00e1tor\u00e1ban \u00faj emul\u00e1lt g\u00e9pt\u00edpus, a &#171;virt&#187; ker\u00fclt bevezet\u00e9sre, \u00e9s megval\u00f3s\u00edtott\u00e1k az ABI call0 t\u00e1mogat\u00e1s\u00e1t a felhaszn\u00e1l\u00f3i t\u00e9r emul\u00e1l\u00e1s\u00e1hoz.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Forr\u00e1s: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52023\">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 4.2. \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 \u043d\u0430\u0442\u0438\u0432\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-53931","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 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.\" \/>\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\/hu\/blog\/news\/vypusk-emulyatora-qemu-4-2\" \/>\n\t\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.3\" \/>\n\t\t<meta property=\"og:locale\" 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