{"id":41281,"date":"2020-02-07T09:28:13","date_gmt":"2020-02-07T06:28:13","guid":{"rendered":"https:\/\/prohoster.info\/blog\/blog_prohoster\/kompaniya-siemens-vypustila-gipervizor-jailhouse-0-12"},"modified":"2020-02-07T09:28:13","modified_gmt":"2020-02-07T06:28:13","slug":"kompaniya-siemens-vypustila-gipervizor-jailhouse-0-12","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/kompaniya-siemens-vypustila-gipervizor-jailhouse-0-12","title":{"rendered":"Compania Siemens a lansat hipervizorul Jailhouse 0.12","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Compania Siemens <noindex><a rel=\"nofollow\" href=\"https:\/\/lkml.org\/lkml\/2020\/2\/4\/403\">a publicat<\/a><\/noindex> lansarea hipervizorului liber <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/siemens\/jailhouse\">Jailhouse 0.12<\/a><\/noindex>. Hipervizorul suport\u0103 func\u021bionarea pe sisteme x86_64 cu extensii VMX+EPT sau SVM+NPT (AMD-V), precum \u0219i pe procesoare ARMv7 \u0219i ARMv8\/ARM64 cu extensii pentru virtualizare. Separat <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/siemens\/jailhouse-images\">se dezvolt\u0103<\/a><\/noindex> generatorul de imagini pentru hipervizorul Jailhouse, formate pe baza pachetelor Debian pentru dispozitivele suportate. Codul proiectului <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/siemens\/jailhouse\">se r\u0103sp\u00e2nde\u0219te<\/a><\/noindex>  sub licen\u021ba GPLv2. <\/p>\n<p>Hipervizorul este realizat ca un modul pentru nucleul Linux \u0219i asigur\u0103 virtualizarea la nivel de nucleu. Componentele pentru sistemele gazd\u0103 sunt deja incluse \u00een nucleul principal Linux. Pentru gestionarea izol\u0103rii sunt utilizate mecanismele hardware de virtualizare furnizate de CPU-urile moderne. Caracteristicile distinctive ale Jailhouse sunt realizarea u\u0219oar\u0103 \u0219i orientarea spre legarea ma\u0219inilor virtuale la un CPU fix, zone de RAM \u0219i dispozitive hardware. Aceast\u0103 abordare permite ca pe un server fizic multi-procesor s\u0103 func\u021bioneze mai multe medii virtuale independente, fiecare fiind legat de propriul nucleu de procesor. <\/p>\n<p>At the strict binding to the CPU, the overhead from the hypervisor's operation is minimized, significantly simplifying its implementation since there is no need for a complex resource allocation scheduler \u2014 dedicating a separate CPU core ensures that no other tasks are executed on this CPU. The advantage of this approach is the ability to guarantee resource access and predictable performance, making Jailhouse a suitable solution for real-time tasks. The downside is limited scalability constrained by the number of CPU cores.<\/p>\n<p>In Jailhouse terminology, virtual environments are termed \"cells\" (cell, in the context of Jailhouse). Inside the cell, the system appears as a single-processor server, displaying performance <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.google.com\/file\/d\/0B6HTUUWSPdd-Zl93MVhlMnRJRjg\/edit\">aproape<\/a><\/noindex> de performan\u021ba unui nucleu CPU dedicat. \u00cen c\u0103mar\u0103 poate fi pornit un mediu cu orice sistem de operare, precum \u0219i medii reduse pentru a rula o aplica\u021bie unic\u0103 sau aplica\u021bii separate, preg\u0103tite special pentru a rezolva sarcini \u00een timp real. Configura\u021bia este specificat\u0103 \u00een <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/siemens\/jailhouse\/blob\/master\/configs\/\">.cell-failuri<\/a><\/noindex>, definind parametrii de CPU, regiuni de memorie \u0219i porturi de intrare\/ie\u0219ire. <\/p>\n<p><center><img decoding=\"async\" alt=\"Compania Siemens a lansat hipervizorul Jailhouse 0.12\" src=\"\/wp-content\/uploads\/2020\/02\/6cf944a2502d951e550625bfd39a3d38.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/center><\/p>\n<p>\u00cen noul num\u0103r<\/p>\n<ul>\n<li class=\"l\"> A fost ad\u0103ugat\u0103 suport pentru platformele Raspberry Pi 4 Model B \u0219i Texas Instruments J721E-EVM;\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/static.sched.com\/hosted_files\/kvmforum2019\/4b\/KVM-Forum19_ivshmem2.pdf\">Reprojectat<\/a><\/noindex> dispozitivul ivshmem, utilizat pentru a organiza interac\u021biunea \u00eentre celule. Peste noul ivshmem poate fi realizat un transport pentru VIRTIO;\n<p><center><noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/pics_base\/0_1580842059.png\"><img decoding=\"async\" alt=\"Compania Siemens a lansat hipervizorul Jailhouse 0.12\" src=\"\/wp-content\/uploads\/2020\/02\/f5785c8e73956397f69b56ec804c77c0.jpg\" style=\"display:block;margin: 0 auto;\" \/><\/a><\/noindex><\/center><\/p>\n<li class=\"l\"> S-a implementat posibilitatea de a dezactiva crearea paginilor mari de memorie (hugepage) pentru a bloca vulnerabilitatea <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51852\">CVE-2018-12207<\/a><\/noindex> in Intel processors, which allows an unprivileged attacker to initiate a denial-of-service, leading to the system hanging in a \"Machine Check Error\" state;\n<li class=\"l\"> Pentru sistemele cu procesoare ARM64 a fost realizat suport pentru SMMUv3 (System Memory Management Unit) \u0219i TI PVU (Peripheral Virtualization Unit). Pentru medii izolate, rulate pe echipamente bare-metal, a fost ad\u0103ugat suport pentru PCI;\n<li class=\"l\"> Pe sistemele x86, pentru camerele r\u0103d\u0103cin\u0103, a fost realizat\u0103 posibilitatea activ\u0103rii modului CR4.UMIP (User-Mode Instruction Prevention) oferit de procesoarele Intel, care permite interzicerea execut\u0103rii \u00een spa\u021biul utilizatorului a unor instruc\u021biuni, cum ar fi SGDT, SLDT, SIDT, SMSW \u0219i STR, care pot fi utilizate \u00een atacuri destinate cre\u0219terii privilegiilor \u00een sistem.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Sursa: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52310\">opennet.ro<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Siemens \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \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 Jailhouse 0.12. \u0413\u0438\u043f\u0435\u0440\u0432\u0438\u0437\u043e\u0440 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u0442 \u0440\u0430\u0431\u043e\u0442\u0443 \u043d\u0430 \u0441\u0438\u0441\u0442\u0435\u043c\u0430\u0445 x86_64 \u0441 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u044f\u043c\u0438 VMX+EPT \u0438\u043b\u0438 SVM+NPT (AMD-V), \u0430 \u0442\u0430\u043a\u0436\u0435 \u043d\u0430 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u0430\u0445 ARMv7 \u0438 ARMv8\/ARM64 \u0441 \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u0438\u044f\u043c\u0438 \u0434\u043b\u044f \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u0438. \u041e\u0442\u0434\u0435\u043b\u044c\u043d\u043e \u0440\u0430\u0437\u0432\u0438\u0432\u0430\u0435\u0442\u0441\u044f \u0433\u0435\u043d\u0435\u0440\u0430\u0442\u043e\u0440 \u043e\u0431\u0440\u0430\u0437\u043e\u0432 \u0434\u043b\u044f \u0433\u0438\u043f\u0435\u0440\u0432\u0438\u0437\u043e\u0440\u0430 Jailhouse, \u0444\u043e\u0440\u043c\u0438\u0440\u0443\u0435\u043c\u044b\u0445 \u043d\u0430 \u043e\u0441\u043d\u043e\u0432\u0435 \u043f\u0430\u043a\u0435\u0442\u043e\u0432 Debian \u0434\u043b\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u0438\u0432\u0430\u0435\u043c\u044b\u0445 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u0440\u0430\u0441\u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u044f\u0435\u0442\u0441\u044f \u043f\u043e\u0434 \u043b\u0438\u0446\u0435\u043d\u0437\u0438\u0435\u0439 GPLv2. \u0413\u0438\u043f\u0435\u0440\u0432\u0438\u0437\u043e\u0440 \u0440\u0435\u0430\u043b\u0438\u0437\u043e\u0432\u0430\u043d \u0432 [&hellip;]<\/p>\n","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"author":1,"featured_media":41282,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[],"tags":[],"class_list":["post-41281","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.2.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Siemens \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043b\u0430 \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\" \/>\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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