{"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\/pt\/blog\/news\/vypusk-emulyatora-qemu-6-1","title":{"rendered":"Lan\u00e7amento do emulador QEMU 6.1","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Foi lan\u00e7ado o projeto QEMU 6.1. 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 f\u00edsico, devido \u00e0 execu\u00e7\u00e3o direta de instru\u00e7\u00f5es na CPU e ao uso do hipervisor Xen ou do m\u00f3dulo KVM.       <\/p>\n<p>O projeto foi inicialmente criado por Fabrice Bellard com o objetivo de permitir a execu\u00e7\u00e3o de arquivos execut\u00e1veis Linux compilados para a plataforma x86 em arquiteturas diferentes de x86. Ao longo dos anos, foi adicionada a 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 6.1, foram realizadas mais de 3000 altera\u00e7\u00f5es por 221 desenvolvedores.     <\/p>\n<p>Principais melhorias adicionadas no QEMU 6.1:   <\/p>\n<ul>\n<li class=\"l\"> No QMP (QEMU Machine Protocol) foi adicionada o comando 'blockdev-reopen' para alterar as configura\u00e7\u00f5es de um dispositivo de bloco j\u00e1 criado.\n<li class=\"l\"> O gnutls foi designado como o driver criptogr\u00e1fico priorit\u00e1rio, superando outros drivers em desempenho. O driver baseado em libgcrypt, que era oferecido por padr\u00e3o, foi movido para a categoria de op\u00e7\u00f5es, e o driver baseado em nettle foi mantido como uma op\u00e7\u00e3o de reserva, utilizada na aus\u00eancia de GnuTLS e Libgcrypt.\n<li class=\"l\"> O emulador I2C agora suporta PMBus e multiplexadores I2C (pca9546, pca9548).\n<li class=\"l\"> Por padr\u00e3o, o suporte a plugins para o gerador de c\u00f3digo cl\u00e1ssico TCG (Tiny Code Generator) foi ativado. Novos plugins foram adicionados: execlog (registro de execu\u00e7\u00e3o) e cache modelling (simula\u00e7\u00e3o do comportamento do cache L1 na CPU).\n<li class=\"l\"> O emulador ARM agora suporta placas baseadas em chips Aspeed (rainier-bmc, quanta-q7l1), npcm7xx (quanta-gbs-bmc) e Cortex-M3 (stm32vldiscovery). Foi adicionada a suporte a mecanismos de criptografia e hashing fornecidos pelos chips Aspeed. Tamb\u00e9m foi acrescentada a suporte \u00e0 emula\u00e7\u00e3o das instru\u00e7\u00f5es SVE2 (incluindo bfloat16), operadores para multiplica\u00e7\u00e3o de matrizes e comandos de limpeza de buffers de tradu\u00e7\u00e3o associativa (TLB).\n<li class=\"l\">  No emulador da arquitetura PowerPC para m\u00e1quinas emuladas 'pseries' foi adicionado suporte \u00e0 detec\u00e7\u00e3o de falhas ao conectar dispositivos a quente em novos ambientes de convidados, aumentando o limite de CPUs e implementando a emula\u00e7\u00e3o de algumas instru\u00e7\u00f5es espec\u00edficas para processadores POWER10. Adicionado suporte para placas baseadas em chips Genesi\/bPlan Pegasos II (pegasos2).\n<li class=\"l\"> No emulador RISC-V, foi implementado suporte para a plataforma OpenTitan e GPU virtual virtio-vga (baseado em virgl).\n<li class=\"l\"> No emulador s390, foi adicionado suporte para a 16\u00aa gera\u00e7\u00e3o de CPU e extens\u00f5es vetoriais.\n<li class=\"l\"> No emulador x86, foi adicionado suporte para novos modelos 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), que implementam a instru\u00e7\u00e3o XSAVES. No emulador de chipset Q35 (ICH9), foi implementado suporte para conex\u00e3o a quente de dispositivos PCI. A emula\u00e7\u00e3o das extens\u00f5es de virtualiza\u00e7\u00e3o fornecidas nos processadores AMD foi aprimorada. Foi adicionada a op\u00e7\u00e3o bus-lock-ratelimit para limitar a intensidade de bloqueio do barramento pelo sistema convidado.\n<li class=\"l\"> Adicionado suporte para uso como acelerador para o hipervisor NVMM, desenvolvido pelo projeto NetBSD.\n<li class=\"l\"> Na GUI, o suporte \u00e0 autentica\u00e7\u00e3o por senha ao usar o protocolo VNC agora \u00e9 ativado apenas em compila\u00e7\u00f5es com backend criptogr\u00e1fico externo (gnutls, libgcrypt ou nettle).      <\/ul>\n<p>Fonte: <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 5.0.3 - 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 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\/pt\/blog\/news\/vypusk-emulyatora-qemu-6-1\" \/>\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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