{"id":106135,"date":"2022-12-17T15:36:38","date_gmt":"2022-12-17T13:36:38","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-gipervizora-xen-4-17"},"modified":"2022-12-17T15:36:38","modified_gmt":"2022-12-17T13:36:38","slug":"vypusk-gipervizora-xen-4-17","status":"publish","type":"post","link":"https:\/\/prohoster.info\/hu\/blog\/news\/vypusk-gipervizora-xen-4-17","title":{"rendered":"Xen 4.17 hipervizor kiad\u00e1s","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Egy \u00e9vnyi fejleszt\u00e9s ut\u00e1n megjelent a szabad Xen 4.17 hipervizor verzi\u00f3. Az \u00faj kiad\u00e1s fejleszt\u00e9s\u00e9ben olyan c\u00e9gek vettek r\u00e9szt, mint az Amazon, Arm, Bitdefender, Citrix, EPAM Systems \u00e9s Xilinx (AMD). A Xen 4.17 \u00e1gon a friss\u00edt\u00e9sek k\u00e9sz\u00edt\u00e9se 2024. j\u00fanius 12-ig folytat\u00f3dik, a sebezhet\u0151s\u00e9gek jav\u00edt\u00e1sait pedig 2025. december 12-ig publik\u00e1lj\u00e1k.      <\/p>\n<p>A Xen 4.17 kulcsfontoss\u00e1g\u00fa v\u00e1ltoz\u00e1sai:   <\/p>\n<ul>\n<li class=\"l\"> Biztos\u00edtott\u00e1k a C nyelv\u0171 biztons\u00e1gos \u00e9s megb\u00edzhat\u00f3 programok fejleszt\u00e9s\u00e9re vonatkoz\u00f3 k\u00f6vetelm\u00e9nyek r\u00e9szleges megfelel\u0151s\u00e9g\u00e9t, amelyek a MISRA-C specifik\u00e1ci\u00f3kban vannak megfogalmazva \u00e9s kritikus rendszerek l\u00e9trehoz\u00e1s\u00e1n\u00e1l alkalmazz\u00e1k. A Xen hivatalosan integr\u00e1lta a 4 MISRA-C ir\u00e1nyelvet \u00e9s 24 szab\u00e1lyt (a 143 szab\u00e1lyb\u00f3l \u00e9s 16 ir\u00e1nyelvb\u0151l), valamint biztos\u00edtott\u00e1k a MISRA-C statikus elemz\u0151 integr\u00e1ci\u00f3j\u00e1t a build folyamatokba, amely ellen\u0151rzi a specifik\u00e1ci\u00f3 k\u00f6vetelm\u00e9nyeinek teljes\u00edt\u00e9s\u00e9t.\n<li class=\"l\"> Lehet\u0151s\u00e9get biztos\u00edtottak az ARM architekt\u00far\u00e1ra \u00e9p\u00fcl\u0151 rendszerek statikus Xen konfigur\u00e1ci\u00f3j\u00e1nak meghat\u00e1roz\u00e1s\u00e1ra, amely el\u0151re r\u00f6gz\u00edti az \u00f6sszes sz\u00fcks\u00e9ges er\u0151forr\u00e1st a vend\u00e9grendszerek bet\u00f6lt\u00e9s\u00e9hez. Minden er\u0151forr\u00e1s, mint p\u00e9ld\u00e1ul a megosztott mem\u00f3ria, az esem\u00e9nyekr\u0151l sz\u00f3l\u00f3 \u00e9rtes\u00edt\u00e9si csatorn\u00e1k \u00e9s a hipervizor kupac\u00e1nak helye, el\u0151re eloszt\u00e1sra ker\u00fcl a hipervizor ind\u00edt\u00e1sakor, nem dinamikusan, \u00edgy kiz\u00e1rva a lehets\u00e9ges er\u0151forr\u00e1shi\u00e1nyok miatti le\u00e1ll\u00e1sokat m\u0171k\u00f6d\u00e9s k\u00f6zben.\n<li class=\"l\"> ARM architekt\u00far\u00e1ra \u00e9p\u00fcl\u0151 be\u00e1gyazott rendszerek sz\u00e1m\u00e1ra k\u00eds\u00e9rleti (tech preview) t\u00e1mogat\u00e1st ny\u00fajtanak a VirtIO protokollokkal v\u00e9gzett bemeneti\/kimeneti virtualiz\u00e1ci\u00f3hoz. Az I\/O virtu\u00e1lis eszk\u00f6zzel val\u00f3 adatcsere a virtio-mmio transzportot haszn\u00e1lja, amely lehet\u0151v\u00e9 tette a sz\u00e9les VirtIO eszk\u00f6zk\u00edn\u00e1lattal val\u00f3 kompatibilit\u00e1st. Implement\u00e1lt\u00e1k a frontendet Linuxhoz, az eszk\u00f6zk\u00e9szletet (libxl\/xl), a dom0less m\u00f3dot \u00e9s a felhaszn\u00e1l\u00f3i t\u00e9rben fut\u00f3 h\u00e1tt\u00e9rszolg\u00e1ltat\u00e1sokat (tesztelt h\u00e1tt\u00e9rszolg\u00e1ltat\u00e1sok: virtio-disk, virtio-net, i2c \u00e9s gpio).\n<li class=\"l\"> Javult a dom0less m\u00f3d t\u00e1mogat\u00e1sa, amely lehet\u0151v\u00e9 teszi a dom0 k\u00f6rnyezet telep\u00edt\u00e9se n\u00e9lk\u00fcli indul\u00e1st a szerver korai boot f\u00e1zis\u00e1ban. A m\u00f3dos\u00edt\u00e1sok lehet\u0151v\u00e9 tett\u00e9k a 64-bites ARM rendszerek EFI firmware-rel val\u00f3 t\u00e1mogat\u00e1s\u00e1t. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hu\/vps\/\"   title=\"virtu\u00e1lis g\u00e9pekhez\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"2131\">virtu\u00e1lis g\u00e9pekhez<\/a> A szerver bet\u00f6lt\u00e9s\u00e9nek korai szakasz\u00e1ban. Lehet\u0151v\u00e9 v\u00e1lt a CPU-poolok (CPUPOOL) meghat\u00e1roz\u00e1sa a bet\u00f6lt\u00e9si f\u00e1zisban (a device tree-n kereszt\u00fcl), ami lehet\u0151v\u00e9 teszi a poolok haszn\u00e1lat\u00e1t dom0 n\u00e9lk\u00fcli konfigur\u00e1ci\u00f3kban, p\u00e9ld\u00e1ul k\u00fcl\u00f6nb\u00f6z\u0151 CPU-architekt\u00far\u00e1k k\u00f6t\u00e9s\u00e9n\u00e9l ARM rendszereken a big.LITTLE architekt\u00far\u00e1val, amely egy lapk\u00e1n gyenge, de energiatakar\u00e9kos \u00e9s er\u0151sebb, de energiaig\u00e9nyes magokat \u00f6tv\u00f6z. Ezen k\u00edv\u00fcl a dom0less k\u00f6rnyezetben lehet\u0151s\u00e9g ny\u00edlik a paravirtualiz\u00e1l\u00f3 frontend\/backend hozz\u00e1rendel\u00e9s\u00e9re a vend\u00e9g rendszerekhez, ami lehet\u0151v\u00e9 teszi a vend\u00e9g rendszerek bet\u00f6lt\u00e9s\u00e9t sz\u00fcks\u00e9ges paravirtualiz\u00e1lt eszk\u00f6z\u00f6kkel.\n<li class=\"l\"> ARM rendszereken a mem\u00f3ria paravirtualiz\u00e1ci\u00f3s strukt\u00far\u00e1k (P2M, Physical to Machine) most a domain l\u00e9trehoz\u00e1sakor kialak\u00edtott mem\u00f3ria poolb\u00f3l ker\u00fclnek ki, ami jav\u00edtja a vend\u00e9g rendszerek k\u00f6z\u00f6tti izol\u00e1ci\u00f3 hat\u00e9konys\u00e1g\u00e1t mem\u00f3riahib\u00e1k eset\u00e9n.\n<li class=\"l\"> ARM rendszerekn\u00e9l a Spectre-BHB sebezhet\u0151s\u00e9g v\u00e9delme hozz\u00e1adva a processzorok mikroarchitekt\u00far\u00e1iba.\n<li class=\"l\"> ARM rendszerekn\u00e9l lehet\u0151s\u00e9g van a Zephyr oper\u00e1ci\u00f3s rendszer futtat\u00e1s\u00e1ra a Dom0 gy\u00f6k\u00e9r k\u00f6rnyezet\u00e9ben.\n<li class=\"l\"> Lehet\u0151v\u00e9 v\u00e1lt a hipervizor k\u00fcl\u00f6n\u00e1ll\u00f3 (out-of-tree) \u00f6ssze\u00e1ll\u00edt\u00e1sa.\n<li class=\"l\"> x86 rendszereken a nagy IOMMU oldalak (superpage) t\u00e1mogat\u00e1sa biztos\u00edtott minden t\u00edp\u00fas\u00fa vend\u00e9g rendszer sz\u00e1m\u00e1ra, ami n\u00f6veli a PCI-eszk\u00f6z\u00f6k \u00e1tvezet\u00e9sekor a s\u00e1vsz\u00e9less\u00e9get. T\u00e1mogat\u00e1st kaptak azok a hostok is, amelyek ak\u00e1r 12 TB RAM-mal rendelkeznek. A bet\u00f6lt\u00e9s sor\u00e1n be\u00e1ll\u00edthat\u00f3 a cpuid param\u00e9terek a dom0 sz\u00e1m\u00e1ra. A vend\u00e9g rendszerek v\u00e9delm\u00e9t a hipervizor szintj\u00e9n megval\u00f3s\u00edtott CPU t\u00e1mad\u00e1sok ellen VIRT_SSBD \u00e9s MSR_SPEC_CTRL param\u00e9terekkel t\u00e1mogatt\u00e1k.\n<li class=\"l\"> K\u00fcl\u00f6n fejl\u0151dik a VirtIO-Grant sz\u00e1ll\u00edt\u00e1s, amely a VirtIO-MMIO-hoz k\u00e9pest magasabb szint\u0171 biztons\u00e1ggal b\u00edr, \u00e9s lehet\u0151v\u00e9 teszi a meghajt\u00f3k sz\u00e1m\u00e1ra az izol\u00e1lt domain-en bel\u00fcli kezel\u0151k ind\u00edt\u00e1s\u00e1t. A VirtIO-Grant eset\u00e9ben k\u00f6zvetlen mem\u00f3ria lek\u00e9pez\u00e9s helyett a vend\u00e9g rendszer fizikai c\u00edmeinek grant-hivatkoz\u00e1sokra t\u00f6rt\u00e9n\u0151 lek\u00e9pez\u00e9s\u00e9t alkalmazz\u00e1k, ami lehet\u0151v\u00e9 teszi az el\u0151re egyeztetett megosztott mem\u00f3ria ter\u00fcletek haszn\u00e1lat\u00e1t az adatok cser\u00e9j\u00e9re a vend\u00e9g rendszer \u00e9s a VirtIO backend k\u00f6z\u00f6tt, an\u00e9lk\u00fcl, hogy a backend hozz\u00e1f\u00e9r\u00e9st kapna a mem\u00f3ria lek\u00e9pez\u00e9s\u00e9hez. A VirtIO-Grant t\u00e1mogat\u00e1sa m\u00e1r implement\u00e1lva van a Linux kernelben, de egyel\u0151re nem engedt\u00e9k aktiv\u00e1lni a QEMU backendekben, a virtio-vhost-n\u00e1l \u00e9s az eszk\u00f6zk\u00e9szletn\u00e9l (libxl\/xl).\n<li class=\"l\"> Folyamatban van a Hyperlaunch kezdem\u00e9nyez\u00e9s fejleszt\u00e9se, amely arra ir\u00e1nyul, hogy rugalmas eszk\u00f6z\u00f6ket biztos\u00edtson a virtu\u00e1lis g\u00e9pek ind\u00edt\u00e1s\u00e1nak testreszab\u00e1s\u00e1hoz a rendszer ind\u00edt\u00e1sakor. Jelenleg k\u00e9szen \u00e1ll az els\u0151 jav\u00edt\u00e1scsomag, amely lehet\u0151v\u00e9 teszi a PV-domainek meghat\u00e1roz\u00e1s\u00e1t \u00e9s azok k\u00e9peinek \u00e1tad\u00e1s\u00e1t a hipervizornak az ind\u00edt\u00e1skor. Teljes m\u00e9rt\u00e9kben megval\u00f3s\u00edtott\u00e1k a sz\u00fcks\u00e9ges elemeket a hasonl\u00f3 paravirtualiz\u00e1lt. <a class=\"wpil_keyword_link\" href=\"https:\/\/prohoster.info\/hu\/domain\/\"   title=\"domainok\" data-wpil-keyword-link=\"linked\"  data-wpil-monitor-id=\"3179\">domainok<\/a>, bele\u00e9rtve a PV-illeszt\u0151programokhoz sz\u00fcks\u00e9ges Xenstore komponenseket. A jav\u00edt\u00e1sok elfogad\u00e1sa ut\u00e1n megkezd\u0151dik a PVH \u00e9s HVM eszk\u00f6z\u00f6k t\u00e1mogat\u00e1s\u00e1nak bevezet\u00e9se, valamint egy k\u00fcl\u00f6n domain (builder domain) megval\u00f3s\u00edt\u00e1sa, amely alkalmas a m\u00e9rhet\u0151 ind\u00edt\u00e1s (measured boot) lebonyol\u00edt\u00e1s\u00e1ra, meger\u0151s\u00edtve az \u00f6sszes bet\u00f6lt\u00f6tt komponens hiteless\u00e9g\u00e9t.\n<li class=\"l\"> Folyamatban van a Xen portj\u00e1nak l\u00e9trehoz\u00e1sa az RISC-V architekt\u00far\u00e1hoz.  <\/ul>\n<p>Forr\u00e1s: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=58340\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0433\u043e\u0434\u0430 \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 4.17. \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, Bitdefender, Citrix, EPAM Systems \u0438 Xilinx (AMD). \u0424\u043e\u0440\u043c\u0438\u0440\u043e\u0432\u0430\u043d\u0438\u0435 \u043e\u0431\u043d\u043e\u0432\u043b\u0435\u043d\u0438\u0439 \u0434\u043b\u044f \u0432\u0435\u0442\u043a\u0438 Xen 4.17 \u043f\u0440\u043e\u0434\u043b\u0438\u0442\u0441\u044f \u0434\u043e 12 \u0438\u044e\u043d\u044f 2024 \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 12 \u0434\u0435\u043a\u0430\u0431\u0440\u044f 2025 \u0433\u043e\u0434\u0430. \u041a\u043b\u044e\u0447\u0435\u0432\u044b\u0435 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0432 Xen 4.17: \u041e\u0431\u0435\u0441\u043f\u0435\u0447\u0435\u043d\u043e \u0447\u0430\u0441\u0442\u0438\u0447\u043d\u043e\u0435 [&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-106135","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.3 - 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