{"id":107985,"date":"2023-04-20T12:48:23","date_gmt":"2023-04-20T10:48:23","guid":{"rendered":"https:\/\/prohoster.info\/?p=107985"},"modified":"2023-04-20T12:58:44","modified_gmt":"2023-04-20T10:58:44","slug":"vypusk-emulyatora-qemu-8-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/vypusk-emulyatora-qemu-8-0","title":{"rendered":"Lan\u00e7amento do emulador QEMU 8.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Foi lan\u00e7ado o projeto QEMU 8.0. Como emulador, o QEMU permite executar um programa compilado para uma plataforma de hardware em um sistema com uma arquitetura completamente diferente, por exemplo, executar um aplicativo para ARM em um PC compat\u00edvel com x86. No modo de virtualiza\u00e7\u00e3o, o desempenho da execu\u00e7\u00e3o de c\u00f3digo em um ambiente isolado \u00e9 pr\u00f3ximo ao de um sistema de hardware devido \u00e0 execu\u00e7\u00e3o direta de instru\u00e7\u00f5es no CPU e \u00e0 utiliza\u00e7\u00e3o do hipervisor Xen ou do m\u00f3dulo KVM.       <\/p>\n<p>Inicialmente, o projeto foi criado por Fabrice Bellard com o objetivo de permitir que execut\u00e1veis compilados para a plataforma x86 rodassem em arquiteturas diferentes de x86. Ao longo dos anos, foi adicionada suporte \u00e0 emula\u00e7\u00e3o completa para 14 arquiteturas de hardware, e o n\u00famero de dispositivos de hardware emulados ultrapassou 400. Na prepara\u00e7\u00e3o da vers\u00e3o 8.0, foram feitas mais de 2800 altera\u00e7\u00f5es por 238 desenvolvedores.     <\/p>\n<p>Principais melhorias adicionadas no QEMU 8.0:   <\/p>\n<ul>\n<li class=\"l\"> O suporte \u00e0 emula\u00e7\u00e3o de sistemas (execu\u00e7\u00e3o completa do SO, incluindo o uso de hipervisores e Xen) em hosts de 32 bits com arquitetura x86 foi declarado obsoleto e ser\u00e1 interrompido em breve. O suporte \u00e0 emula\u00e7\u00e3o no modo user-mode (execu\u00e7\u00e3o de processos individuais compilados para outro CPU) em hosts x86 de 32 bits continuar\u00e1. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/pt\/vps\/abuzoustojchivye-vps\/\"   title=\"KVM\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"4421\">KVM<\/a> O emulador da arquitetura x86 adicionou suporte para executar sistemas convidados Xen em ambientes baseados no hipervisor KVM e n\u00facleos Linux 5.12+.\n<li class=\"l\"> No gerador de c\u00f3digo cl\u00e1ssico TCG para a arquitetura x86, foi adicionada a suporta\u00e7\u00e3o dos flags CPUID FSRM, FZRM, FSRS e FSRC. O suporte para o novo modelo de CPU Intel Sapphire Rapids (Intel 7) foi implementado.\n<li class=\"l\"> No emulador ARM, foi implementado o suporte para os CPUs Cortex-A55 e Cortex-R52, um novo tipo de m\u00e1quinas emuladas Olimex STM32 H405 foi adicionado, al\u00e9m do suporte para as extens\u00f5es de processador FEAT_EVT (Traps de Virtualiza\u00e7\u00e3o Aprimorada), FEAT_FGT (Traps de Granularidade Fina) e AArch32 ARMv8-R. No gdbstub, foi adicionado suporte para registradores de sistema na arquitetura de perfil M (perfil de microcontroladores).\n<li class=\"l\"> No emulador da arquitetura RISC-V, a implementa\u00e7\u00e3o das m\u00e1quinas emuladas OpenTitan, PolarFire e OpenSBI foi atualizada. O suporte para conjuntos adicionais de instru\u00e7\u00f5es de CPU (ISA) e extens\u00f5es foi adicionado: Smstateen, contadores de depura\u00e7\u00e3o icount associados ao cache de eventos PMU em modo virtual, ACPI, extens\u00f5es Zawrs, Svadu, T-Head e Zicond.\n<li class=\"l\"> No emulador da arquitetura HPPA, foi adicionado suporte para o comando fid (Identificar ponto flutuante) e a emula\u00e7\u00e3o foi melhorada no modo de 32 bits.\n<li class=\"l\"> O suporte para a instru\u00e7\u00e3o fid (Floating-Point Identify) foi adicionado ao emulador da arquitetura HPPA e a emula\u00e7\u00e3o no modo de 32 bits foi aprimorada.\n<li class=\"l\"> O emulador da arquitetura 390x agora suporta o desconex\u00e3o ass\u00edncrona de mem\u00f3ria durante a reinicializa\u00e7\u00e3o de sistemas convidados KVM protegidos. O processamento de dispositivos zPCI pass-through foi aprimorado.\n<li class=\"l\"> O mecanismo virtio-mem, que permite a conex\u00e3o e desconex\u00e3o din\u00e2mica de mem\u00f3ria para m\u00e1quinas virtuais, implementou a aloca\u00e7\u00e3o preemptiva de recursos durante a migra\u00e7\u00e3o ao vivo.\n<li class=\"l\"> No VFIO (Virtual Function I\/O), foi atualizado o suporte experimental para migra\u00e7\u00e3o (a segunda edi\u00e7\u00e3o do protocolo de migra\u00e7\u00e3o foi ativada).\n<li class=\"l\"> No dispositivo de bloco qemu-nbd, a efici\u00eancia do funcionamento sobre TCP ao usar TLS foi aumentada.\n<li class=\"l\"> O agente para sistemas convidados agora possui suporte inicial para OpenBSD e NetBSD.             <\/ul>\n<p>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=59002\">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 8.0. \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-107985","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 8.0.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri 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