{"id":89996,"date":"2020-07-28T01:42:24","date_gmt":"2020-07-27T23:42:24","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-gipervizora-xen-4-14"},"modified":"2020-07-28T01:42:24","modified_gmt":"2020-07-27T23:42:24","slug":"vypusk-gipervizora-xen-4-14","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/vypusk-gipervizora-xen-4-14","title":{"rendered":"Lan\u00e7amento do hipervisor Xen 4.14","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Ap\u00f3s oito meses de desenvolvimento <noindex><a rel=\"nofollow\" href=\"https:\/\/xenproject.org\/2020\/07\/24\/xen-project-hypervisor-version-4-14-brings-added-security-and-performance\/\">foi publicado<\/a><\/noindex> lan\u00e7amento do hypervisor livre <noindex><a rel=\"nofollow\" href=\"https:\/\/www.xenproject.org\/\">Xen 4.14<\/a><\/noindex>. No desenvolvimento da nova vers\u00e3o participaram empresas como Alibaba, Amazon, AMD, Arm, Bitdefender, Citrix, EPAM Systems, Huawei e Intel. O recebimento de atualiza\u00e7\u00f5es para a s\u00e9rie Xen 4.14 continuar\u00e1 at\u00e9 24 de janeiro de 2022, enquanto a publica\u00e7\u00e3o de corre\u00e7\u00f5es de vulnerabilidades se estender\u00e1 at\u00e9 24 de julho de 2023.<\/p>\n<p>Principais <noindex><a rel=\"nofollow\" href=\"http:\/\/wiki.xenproject.org\/wiki\/Xen_Project_4.14_Feature_List\">mudan\u00e7as<\/a><\/noindex> em Xen 4.14: <\/p>\n<ul>\n<li class=\"l\"> Adicionada suporte a um novo modelo de dispositivos <noindex><a rel=\"nofollow\" href=\"https:\/\/wiki.xenproject.org\/wiki\/Device_Model_Stub_Domains\">Linux stubdomain<\/a><\/noindex>, permitindo organizar a execu\u00e7\u00e3o sob um usu\u00e1rio n\u00e3o privilegiado, separando os componentes para emula\u00e7\u00e3o de dispositivos do Dom0. Anteriormente, no modo stubdomain, era poss\u00edvel usar apenas o modelo de dispositivos \u201cqemu-traditional\u201d, o que limitava o espectro de hardware emulado. O novo modelo <noindex><a rel=\"nofollow\" href=\"https:\/\/wiki.xen.org\/wiki\/Linux_stub_domains\">Linux stubomains<\/a><\/noindex> foi desenvolvido pelo projeto QUBES OS e suporta o uso de drivers de emula\u00e7\u00e3o das vers\u00f5es mais recentes do QEMU, al\u00e9m de capacidades auxiliares dispon\u00edveis no QEMU para sistemas convidados.\n<li class=\"l\"> Para sistemas com suporte a Intel EPT, foi implementado o suporte \u00e0 cria\u00e7\u00e3o de ramifica\u00e7\u00f5es leves (forks) de m\u00e1quinas virtuais para realiza\u00e7\u00e3o de introspec\u00e7\u00e3o r\u00e1pida, por exemplo, para an\u00e1lise de malware ou teste de fuzzing. Nessas ramifica\u00e7\u00f5es, \u00e9 utilizada a compartilhamento de mem\u00f3ria e n\u00e3o \u00e9 feita a clonagem do modelo de dispositivos.\n<li class=\"l\"> O sistema de live patching agora est\u00e1 vinculado a identificadores de vers\u00f5es do hypervisor, levando em conta a ordem de aplica\u00e7\u00e3o dos patches para evitar a sobreposi\u00e7\u00e3o de patches que n\u00e3o pertencem \u00e0 mesma vers\u00e3o ou que n\u00e3o s\u00e3o aplicados na ordem correta.\n<li class=\"l\"> Foi adicionada suporte \u00e0s extens\u00f5es CET (Intel Control-flow Enforcement Technology) para prote\u00e7\u00e3o contra a execu\u00e7\u00e3o de exploits constru\u00eddos utilizando t\u00e9cnicas de programa\u00e7\u00e3o orientada a retorno (ROP, Return-Oriented Programming).\n<li class=\"l\"> Foi adicionada a configura\u00e7\u00e3o CONFIG_PV32 para desabilitar no hypervisor o suporte a sistemas convidados paravirtualizados (PV) de 32 bits, mantendo o suporte para 64 bits.\n<li class=\"l\"> Foi adicionada a suporte ao Hypervisor FS, um pseudo-sistema de arquivos no estilo sysfs para acesso estruturado a dados internos e configura\u00e7\u00f5es do hypervisor, sem a necessidade de analisar logs ou escrever chamadas de hypervisor.\n<li class=\"l\"> Foi disponibilizada a capacidade de executar o Xen como um sistema convidado sob a supervis\u00e3o do hipervisor Hyper-V, utilizado na plataforma em nuvem Microsoft Azure. Executar o Xen dentro do Hyper-V permite usar a pilha de virtualiza\u00e7\u00e3o familiar em ambientes de nuvem Azure e possibilita mover m\u00e1quinas virtuais entre diferentes sistemas de nuvem.\n<li class=\"l\"> Foi adicionada a capacidade de gerar uma identifica\u00e7\u00e3o aleat\u00f3ria para o sistema convidado (anteriormente, as identifica\u00e7\u00f5es eram geradas sequencialmente). As identifica\u00e7\u00f5es agora tamb\u00e9m podem ser mantidas entre opera\u00e7\u00f5es de salvamento, recupera\u00e7\u00e3o e migra\u00e7\u00e3o de estado da VM.\n<li class=\"l\"> Foi garantida a gera\u00e7\u00e3o autom\u00e1tica de bindings para a linguagem Go com base nas estruturas do libxl.\n<li class=\"l\"> Para Windows 7, 8.x e 10, foi adicionado suporte ao KDD, uma ferramenta para interagir com o depurador WinDbg (Windows Debugger), o que permite depurar ambientes Windows sem ativar a depura\u00e7\u00e3o no SO convidado.\n<li class=\"l\"> Foi adicionado suporte a todas as varia\u00e7\u00f5es da placa Raspberry Pi 4, fornecidas com 4GB e 8GB de RAM.\n<li class=\"l\"> Foi adicionado suporte para processadores AMD EPYC codinome \u201cMilan\u201d.\n<li class=\"l\"> Aumentou-se o desempenho da virtualiza\u00e7\u00e3o aninhada, onde o Xen \u00e9 executado dentro de sistemas convidados baseados em Xen ou Viridian.\n<li class=\"l\"> No modo de emula\u00e7\u00e3o, foi implementado suporte para instru\u00e7\u00f5es AVX512_BF16.\n<li class=\"l\"> A constru\u00e7\u00e3o do hipervisor foi transferida para o uso do Kbuild.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Fonte: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=53440\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0432\u043e\u0441\u044c\u043c\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437 \u0441\u0432\u043e\u0431\u043e\u0434\u043d\u043e\u0433\u043e \u0433\u0438\u043f\u0435\u0440\u0432\u0438\u0437\u043e\u0440\u0430 Xen 4.14. \u0412 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u043d\u043e\u0432\u043e\u0433\u043e \u0432\u044b\u043f\u0443\u0441\u043a\u0430 \u043f\u0440\u0438\u043d\u044f\u043b\u0438 \u0443\u0447\u0430\u0441\u0442\u0438\u0435 \u0442\u0430\u043a\u0438\u0435 \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0438, \u043a\u0430\u043a Alibaba, Amazon, AMD, Arm, Bitdefender, Citrix, EPAM Systems, Huawei \u0438 Intel. \u0412\u043f\u0443\u0441\u043a \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0434\u043b\u044f \u0432\u0435\u0442\u043a\u0438 Xen 4.14 \u043f\u0440\u043e\u0434\u043b\u0438\u0442\u0441\u044f \u0434\u043e 24 \u044f\u043d\u0432\u0430\u0440\u044f 2022 \u0433\u043e\u0434\u0430, \u0430 \u043f\u0443\u0431\u043b\u0438\u043a\u0430\u0446\u0438\u044f \u0438\u0441\u043f\u0440\u0430\u0432\u043b\u0435\u043d\u0438\u0439 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0435\u0439 \u0434\u043e 24 \u0438\u044e\u043b\u044f 2023 \u0433\u043e\u0434\u0430. \u041a\u043b\u044e\u0447\u0435\u0432\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 Xen [&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-89996","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\u043e\u0441\u043b\u0435 \u0432\u043e\u0441\u044c\u043c\u0438 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d \u0440\u0435\u043b\u0438\u0437.\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" content=\"Yuri Gagarin\"\/>\n\t<link rel=\"canonical\" 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