{"id":101087,"date":"2021-08-25T10:22:49","date_gmt":"2021-08-25T08:22:49","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-emulyatora-qemu-6-1"},"modified":"2021-08-25T10:22:49","modified_gmt":"2021-08-25T08:22:49","slug":"vypusk-emulyatora-qemu-6-1","status":"publish","type":"post","link":"https:\/\/prohoster.info\/fr\/blog\/news\/vypusk-emulyatora-qemu-6-1","title":{"rendered":"Sortie de l'\u00e9mulateur QEMU 6.1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>La version 6.1 du projet QEMU est pr\u00e9sent\u00e9e. En tant qu'\u00e9mulateur, QEMU permet d'ex\u00e9cuter un programme con\u00e7u pour une plateforme mat\u00e9rielle sur un syst\u00e8me ayant une architecture compl\u00e8tement diff\u00e9rente, par exemple, faire fonctionner une application pour ARM sur un PC compatible x86. En mode de virtualisation, la performance d'ex\u00e9cution du code dans un environnement isol\u00e9 est proche du syst\u00e8me mat\u00e9riel gr\u00e2ce \u00e0 l'ex\u00e9cution directe des instructions sur le CPU et \u00e0 l'utilisation de l'hyperviseur Xen ou du module KVM.       <\/p>\n<p>Le projet a \u00e9t\u00e9 initialement cr\u00e9\u00e9 par Fabrice Bellard dans le but de permettre l'ex\u00e9cution de fichiers ex\u00e9cutables Linux compil\u00e9s pour la plateforme x86 sur des architectures autres que x86. Au cours des ann\u00e9es de d\u00e9veloppement, la prise en charge de l'\u00e9mulation compl\u00e8te pour 14 architectures mat\u00e9rielles a \u00e9t\u00e9 ajout\u00e9e, et le nombre d'appareils mat\u00e9riels \u00e9mul\u00e9s a d\u00e9pass\u00e9 400. Pour la version 6.1, plus de 3000 modifications ont \u00e9t\u00e9 apport\u00e9es par 221 d\u00e9veloppeurs.     <\/p>\n<p>Am\u00e9liorations cl\u00e9s ajout\u00e9es dans QEMU 6.1 :   <\/p>\n<ul>\n<li class=\"l\"> La commande \u00ab blockdev-reopen \u00bb a \u00e9t\u00e9 ajout\u00e9e au QMP (QEMU Machine Protocol) pour modifier les param\u00e8tres d'un p\u00e9riph\u00e9rique de bloc d\u00e9j\u00e0 cr\u00e9\u00e9.\n<li class=\"l\"> En tant que pilote cryptographique prioritaire, gnutls a \u00e9t\u00e9 activ\u00e9, surpassant les autres pilotes en termes de performance. Le pilote bas\u00e9 sur libgcrypt, pr\u00e9c\u00e9demment propos\u00e9 par d\u00e9faut, a \u00e9t\u00e9 d\u00e9class\u00e9 en tant qu'option, tandis que le pilote bas\u00e9 sur nettle reste comme une option de secours, utilis\u00e9 en l'absence de GnuTLS et Libgcrypt.\n<li class=\"l\"> Le support de PMBus et des multiplexeurs I2C (pca9546, pca9548) a \u00e9t\u00e9 ajout\u00e9 \u00e0 l'\u00e9mulateur I2C.\n<li class=\"l\"> Par d\u00e9faut, le support des plugins pour le g\u00e9n\u00e9rateur de code classique TCG (Tiny Code Generator) est activ\u00e9. De nouveaux plugins execlog (journal d'ex\u00e9cution) et cache modelling (mod\u00e9lisation du comportement du cache L1 dans le CPU) ont \u00e9t\u00e9 ajout\u00e9s.\n<li class=\"l\"> Le support des cartes bas\u00e9es sur les puces Aspeed (rainier-bmc, quanta-q7l1), npcm7xx (quanta-gbs-bmc) et Cortex-M3 (stm32vldiscovery) a \u00e9t\u00e9 ajout\u00e9 \u00e0 l'\u00e9mulateur ARM. Le support des moteurs mat\u00e9riels de chiffrement et de hachage fournis dans les puces Aspeed a \u00e9t\u00e9 ajout\u00e9. De plus, le support de l'\u00e9mulation d'instructions SVE2 (y compris bfloat16), d'op\u00e9rateurs pour la multiplication de matrices, et de commandes de r\u00e9initialisation des buffers de traduction associative (TLB) a \u00e9t\u00e9 ajout\u00e9.\n<li class=\"l\">  Dans l'\u00e9mulateur de l'architecture PowerPC pour les machines \u00ab pseries \u00bb \u00e9mulateurs, la prise en charge de la d\u00e9tection des pannes lors du branchement \u00e0 chaud des p\u00e9riph\u00e9riques dans de nouveaux environnements invit\u00e9s a \u00e9t\u00e9 ajout\u00e9e, la limite du nombre de CPU a \u00e9t\u00e9 augment\u00e9e et l'\u00e9mulation de certaines instructions sp\u00e9cifiques aux processeurs POWER10 a \u00e9t\u00e9 mise en place. La prise en charge des cartes bas\u00e9es sur les puces Genesi\/bPlan Pegasos II (pegasos2) a \u00e9t\u00e9 ajout\u00e9e.\n<li class=\"l\"> Dans l'\u00e9mulateur RISC-V, le support de la plateforme OpenTitan et du GPU virtuel virtio-vga (bas\u00e9 sur virgl) a \u00e9t\u00e9 mis en \u0153uvre.\n<li class=\"l\"> Dans l'\u00e9mulateur s390, le support de la 16\u00e8me g\u00e9n\u00e9ration de CPU et des extensions vectorielles a \u00e9t\u00e9 ajout\u00e9.\n<li class=\"l\"> Dans l'\u00e9mulateur x86, le support de nouveaux mod\u00e8les de CPU Intel (Skylake-Client-v4, Skylake-Server-v5, Cascadelake-Server-v5, Cooperlake-v2, Icelake-Client-v3, Icelake-Server-v5, Denverton-v3, Snowridge-v3, Dhyana-v2), qui impl\u00e9mentent l'instruction XSAVES, a \u00e9t\u00e9 ajout\u00e9. Dans l'\u00e9mulateur de chipset Q35 (ICH9), le support du branchement \u00e0 chaud des dispositifs PCI a \u00e9t\u00e9 impl\u00e9ment\u00e9. L'\u00e9mulation des extensions de virtualisation fournies par les processeurs AMD a \u00e9t\u00e9 am\u00e9lior\u00e9e. Une option bus-lock-ratelimit a \u00e9t\u00e9 ajout\u00e9e pour limiter l'intensit\u00e9 de verrouillage du bus par le syst\u00e8me invit\u00e9.\n<li class=\"l\"> Le support de l'utilisation comme acc\u00e9l\u00e9rateur pour l'hyperviseur NVMM, en cours de d\u00e9veloppement par le projet NetBSD, a \u00e9t\u00e9 ajout\u00e9.\n<li class=\"l\"> Dans l'interface graphique, l'authentification par mot de passe lors de l'utilisation du protocole VNC est d\u00e9sormais activ\u00e9e uniquement lors de la compilation avec un backend cryptographique externe (gnutls, libgcrypt ou nettle).      <\/ul>\n<p>Source : <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55679\">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 6.1. \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-101087","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2 - 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 6.1.\" \/>\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\/fr\/blog\/news\/vypusk-emulyatora-qemu-6-1\" \/>\n\t<meta name=\"generator\" content=\"All in One SEO (AIOSEO) 5.0.2\" \/>\n\t\t<meta property=\"og:locale\" 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