{"id":148860,"date":"2025-11-19T17:11:54","date_gmt":"2025-11-19T15:11:54","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-gipervizora-xen-4-21"},"modified":"2025-11-19T17:11:54","modified_gmt":"2025-11-19T15:11:54","slug":"vypusk-gipervizora-xen-4-21","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pl\/blog\/news\/vypusk-gipervizora-xen-4-21","title":{"rendered":"Wydanie hipernadzorcy Xen 4.21","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Po 8 miesi\u0105cach rozwoju opublikowano wydanie wolnego hipernadzorcy Xen 4.21. W opracowanie nowej wersji zaanga\u017cowane by\u0142y takie firmy jak Amazon, Arm, EPAM Systems i AMD. Kod projektu napisany jest w j\u0119zyku C i jest rozpowszechniany na licencji GPLv2+. Rozw\u00f3j odbywa si\u0119 w ramach organizacji Linux Foundation.      <\/p>\n<p>Kluczowe zmiany w Xen 4.21:   <\/p>\n<ul>\n<li class=\"l\"> Zapewni\u0142em pe\u0142ne wsparcie dla modelu urz\u0105dze\u0144 Linux stubdomain, kt\u00f3ry pozwala na uruchamianie komponent\u00f3w w celu emulacji urz\u0105dze\u0144 pod osobnym nieuprzywilejowanym u\u017cytkownikiem. Model Linux stubomains zosta\u0142 opracowany przez projekt QUBES OS i wspiera u\u017cycie sterownik\u00f3w emulacji z najnowszych wyda\u0144 QEMU, a tak\u017ce dost\u0119pnych w QEMU powi\u0105zanych mo\u017cliwo\u015bci dla system\u00f3w go\u015bcinnych.\n<li class=\"l\"> Zmiany dla system\u00f3w opartych na architekturze x86:\n<ul>\n<li class=\"l\"> Dodano wsparcie dla nowego algorytmu kompresji struktury PDX (Page inDeX), kt\u00f3ry pozwala na popraw\u0119 dzia\u0142ania Xen na procesorach Intel Sierra Forest i Granite Rapids przy nieliniowym mapowaniu fizycznej pami\u0119ci (sparse memory map), kt\u00f3re dopuszcza obecno\u015b\u0107 pustych obszar\u00f3w.\n<li class=\"l\"> Dodano mo\u017cliwo\u015b\u0107 kontrolowania atrybutu pami\u0119ci podr\u0119cznej w MTRR (Memory Type Range Registers) dla rejestru BAR (Base Address Register) podstawowego urz\u0105dzenia PCI platformy Xen, u\u017cywanego przez systemy go\u015bcinne w trybie HVM. Domy\u015blnie w MTRR dla odzwierciedlonej pami\u0119ci urz\u0105dze\u0144 PCI przyznawany jest atrybut UC (uncacheable), kt\u00f3ry ma sens dla rzeczywistych urz\u0105dze\u0144 PCI, ale jedynie obni\u017ca wydajno\u015b\u0107 urz\u0105dzenia PCI na platformie Xen.\n<li class=\"l\"> Dla procesor\u00f3w AMD dodano nowy sterownik amd-cppc\/amd-cppc-epp, kt\u00f3ry zarz\u0105dza zmian\u0105 cz\u0119stotliwo\u015bci CPU w celu osi\u0105gni\u0119cia optymalnej wydajno\u015bci. W sterowniku wykorzystano mechanizm CPPC (Collaborative Processor Performance Control), kt\u00f3ry w przeciwie\u0144stwie do acpi-cpufreq nie jest ograniczony do trzech poziom\u00f3w wydajno\u015bci i pozwala na bardziej dynamiczn\u0105 reakcj\u0119 na zmiany stanu.\n<li class=\"l\"> W wariancie warstwy xenstore-stubdom, u\u017cywanej do uruchamiania xenstored bez uprawnie\u0144 Dom0, dla \u015brodowisk parawirtualnych w trybie PVH wprowadzono wsparcie dla aktualizacji na \u017cywo.\n<li class=\"l\"> Dla Dom0 w trybie PVH wprowadzono wsparcie dla technologii Resizable BAR (Resizable Base Address Register), kt\u00f3ra pozwala na natychmiastowy dost\u0119p do ca\u0142ej pami\u0119ci urz\u0105dzenia PCI Express, a nie tylko w odniesieniu do blok\u00f3w.\n<li class=\"l\"> Wprowadzono mo\u017cliwo\u015b\u0107 przekazywania urz\u0105dze\u0144 PCI do \u015brodowisk domU w trybie HVM (pe\u0142na virtualizacja sprz\u0119towa) w konfiguracjach, w kt\u00f3rych dom0 dzia\u0142a w trybie PVH (hybrydowa virtualizacja sprz\u0119towa i parawirtualizacja).  <\/ul>\n<li class=\"l\"> Zmiany dla system\u00f3w opartych na architekturze ARM:\n<ul>\n<li class=\"l\"> \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u044f \u043c\u0435\u0445\u0430\u043d\u0438\u0437\u043c\u0430 \u0437\u0430\u0449\u0438\u0442\u044b \u0441\u0442\u0435\u043a\u0430 (\u0441\u0431\u043e\u0440\u043a\u0430 \u0441 \u0444\u043b\u0430\u0433\u043e\u043c &#171;-fstack-protector&#187;), \u043e\u0441\u043d\u043e\u0432\u0430\u043d\u043d\u043e\u0433\u043e \u043d\u0430 \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0438\u0438 \u0432 \u0441\u0442\u0435\u043a \u043a\u0430\u043d\u0430\u0440\u0435\u0435\u0447\u043d\u044b\u0445 \u043c\u0435\u0442\u043e\u043a &#8212; \u0441\u043b\u0443\u0447\u0430\u0439\u043d\u044b\u0445 \u043f\u043e\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0435\u0439. \u0412 \u0441\u043b\u0443\u0447\u0430\u0435 \u043f\u0435\u0440\u0435\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f \u0431\u0443\u0444\u0435\u0440\u0430 \u0432 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u0435 \u044d\u043a\u0441\u043f\u043b\u0443\u0430\u0442\u0430\u0446\u0438\u0438 \u0443\u044f\u0437\u0432\u0438\u043c\u043e\u0441\u0442\u0438 \u043a\u0430\u043d\u0430\u0440\u0435\u0435\u0447\u043d\u0430\u044f \u043c\u0435\u0442\u043a\u0430 \u043e\u043a\u0430\u0437\u044b\u0432\u0430\u0435\u0442\u0441\u044f \u043f\u0435\u0440\u0435\u0437\u0430\u043f\u0438\u0441\u0430\u043d\u0430 \u0434\u0440\u0443\u0433\u0438\u043c\u0438 \u0434\u0430\u043d\u043d\u044b\u043c\u0438, \u0447\u0442\u043e \u043f\u0440\u0438\u0432\u043e\u0434\u0438\u0442 \u043a \u0441\u0440\u0430\u0431\u0430\u0442\u044b\u0432\u0430\u043d\u0438\u044e \u043f\u043e\u0441\u043b\u0435\u0434\u0443\u044e\u0449\u0435\u0439 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u0438 \u043d\u0435\u0438\u0437\u043c\u0435\u043d\u043d\u043e\u0441\u0442\u0438 \u043c\u0435\u0442\u043a\u0438 \u0438 \u0438\u043d\u0438\u0446\u0438\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u044e \u0430\u0432\u0430\u0440\u0438\u0439\u043d\u043e\u0433\u043e \u0437\u0430\u0432\u0435\u0440\u0448\u0435\u043d\u0438\u044f \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f.\n<li class=\"l\"> Dodano wsparcie dla mechanizmu eSPI (Extended Shared Peripheral Interrupts), dostarczanego przez kontrolery przerwa\u0144 GICv3.1.\n<li class=\"l\"> Zrealizowano obs\u0142ug\u0119 SMMU (System Memory Management Unit) przy przekazywaniu urz\u0105dze\u0144 PCIe.\n<li class=\"l\"> Dodano wsparcie dla host\u00f3w kontroler\u00f3w PCI, stosowanych w czwartej generacji SoC Renesas R-Car.\n<li class=\"l\"> Dodano wst\u0119pn\u0105 obs\u0142ug\u0119 procesor\u00f3w Cortex-R52 i Cortex-R82 z MPU (Memory Protection Unit).    <\/ul>\n<li class=\"l\"> W porcie Xen dla architektury RISC-V wprowadzono podstawowe wsparcie dla UART i mo\u017cliwo\u015b\u0107 obs\u0142ugi zewn\u0119trznych przerwa\u0144 (APLIC\/IMSIC) w trybie hypervisora.\n<li class=\"l\"> Kontynuowane s\u0105 prace nad spe\u0142nieniem wymaga\u0144 dotycz\u0105cych tworzenia bezpiecznych i niezawodnych program\u00f3w w j\u0119zyku C, okre\u015blonych w specyfikacjach MISRA-C dla system\u00f3w krytycznych.\n<li class=\"l\"> Zako\u0144czono wsparcie dla starych wersji GCC i Clang, do kompilacji wymagane s\u0105 teraz co najmniej wersje GCC 5.1, Clang 11, Binutils 2.25 i GNU Make 3.80.  <\/ul>\n<p>\u0179r\u00f3d\u0142o: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=64285\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 8 \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 4.21. \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 Amazon, Arm, EPAM Systems \u0438 AMD. \u041a\u043e\u0434 \u043f\u0440\u043e\u0435\u043a\u0442\u0430 \u043d\u0430\u043f\u0438\u0441\u0430\u043d \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 \u0421\u0438 \u0438 \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+. \u0420\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0430 \u0432\u0435\u0434\u0451\u0442\u0441\u044f \u0432 \u0441\u043e\u0441\u0442\u0430\u0432\u0435 \u043e\u0440\u0433\u0430\u043d\u0438\u0437\u0430\u0446\u0438\u0438 Linux Foundation. \u041a\u043b\u044e\u0447\u0435\u0432\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 Xen 4.21: \u041e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u0430 \u043f\u043e\u043b\u043d\u0430\u044f \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u043c\u043e\u0434\u0435\u043b\u0438 \u0443\u0441\u0442\u0440\u043e\u0439\u0441\u0442\u0432 Linux stubdomain, [&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-148860","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041f\u043e\u0441\u043b\u0435 8 \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 4.21. \u0412 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u043d\u043e\u0432\u043e\u0433\u043e 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hypervisora Xen 4.21 | ProHoster","description":"Po 8 miesi\u0105cach prac opublikowano wydanie wolnego hypervisora Xen 4.21. 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