{"id":76724,"date":"2020-04-04T07:42:13","date_gmt":"2020-04-04T05:42:13","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/kompaniya-oracle-opublikovala-yadro-unbreakable-enterprise-kernel-6"},"modified":"2020-04-04T07:42:13","modified_gmt":"2020-04-04T05:42:13","slug":"kompaniya-oracle-opublikovala-yadro-unbreakable-enterprise-kernel-6","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sv\/blog\/news\/kompaniya-oracle-opublikovala-yadro-unbreakable-enterprise-kernel-6","title":{"rendered":"Oracle har publicerat k\u00e4rnan Unbreakable Enterprise Kernel 6","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>Oracle <noindex><a rel=\"nofollow\" href=\"https:\/\/blogs.oracle.com\/linux\/announcing-the-unbreakable-enterprise-kernel-release-6-for-oracle-linux\">har presenterat<\/a><\/noindex> den f\u00f6rsta stabila versionen <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.oracle.com\/en\/operating-systems\/uek\/6\/relnotes6.0\/\">Unbreakable Enterprise Kernel 6<\/a><\/noindex> (UEK R6), en ut\u00f6kad k\u00e4rnversion av Linux, avsedd att anv\u00e4ndas i Oracle Linux-distributionen som ett alternativ till standardpaketet med k\u00e4rna fr\u00e5n Red Hat Enterprise Linux. K\u00e4rnan \u00e4r endast tillg\u00e4nglig f\u00f6r arkitekturerna x86_64 och ARM64 (aarch64). K\u00e4llkoden till k\u00e4rnan, inklusive uppdelning i separata patchar, <noindex><a rel=\"nofollow\" href=\"https:\/\/oss.oracle.com\/git\/?p=linux-uek.git;a=summary\">som offentlig dom\u00e4n (<\/a><\/noindex> finns i Oracle:s offentliga Git-repo.<\/p>\n<p>Unbreakable Enterprise Kernel 6 \u00e4r baserad p\u00e5 k\u00e4rnan <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51881\">Linux 5.4<\/a><\/noindex> (UEK R5 var baserat p\u00e5 k\u00e4rna 4.14), som kompletteras med nya funktioner, optimeringar och buggfixar, samt har testats f\u00f6r kompatibilitet med de flesta applikationer som k\u00f6rs p\u00e5 RHEL, och \u00e4r speciellt optimerad f\u00f6r att fungera med Oracle-programvara och -utrustning. Installations- och src-paket med UEK R6 har f\u00f6rberetts f\u00f6r Oracle Linux <noindex><a rel=\"nofollow\" href=\"https:\/\/yum.oracle.com\/oracle-linux-7.html\">7.x<\/a><\/noindex> och <noindex><a rel=\"nofollow\" href=\"https:\/\/yum.oracle.com\/oracle-linux-8.html\">8.x<\/a><\/noindex>. St\u00f6det f\u00f6r version 6.x har upph\u00f6rt, f\u00f6r att anv\u00e4nda UEK R6 b\u00f6r systemet uppgraderas till Oracle Linux 7 (det finns inga hinder f\u00f6r att anv\u00e4nda denna k\u00e4rna i liknande versioner av RHEL, CentOS och Scientific Linux). <\/p>\n<p>Nyckel <noindex><a rel=\"nofollow\" href=\"https:\/\/docs.oracle.com\/en\/operating-systems\/uek\/6\/relnotes6.0\/uek-features-changes.html\">nyheter<\/a><\/noindex> Unbreakable Enterprise Kernel 6:<\/p>\n<ul>\n<li class=\"l\"> Ut\u00f6kad support f\u00f6r system baserade p\u00e5 64-bitars ARM-arkitektur (aarch64).\n<li class=\"l\"> St\u00f6d f\u00f6r alla funktioner i Cgroup v2 har implementerats.\n<li class=\"l\"> En ktask-ramverk har implementerats f\u00f6r att parallellisera resurssn\u00e5la k\u00e4rnuppgifter som kr\u00e4ver betydande CPU-resurser. Till exempel kan ktask anv\u00e4ndas f\u00f6r att organisera parallelliseringen av operationer som r\u00f6r rensning av minnesomr\u00e5den eller bearbetning av inode-listor;\n<li class=\"l\"> En parallell version av kswapd har inkluderats f\u00f6r att hantera minnesutbytesoperationer i en asynkron modus, vilket minskar antalet direkta (synchroniserade) utbytesoperationer. N\u00e4r antalet lediga minnessidor minskar, utf\u00f6r kswapd skanning f\u00f6r att identifiera oanv\u00e4nda sidor som kan frig\u00f6ras.\n<li class=\"l\"> St\u00f6d f\u00f6r verifiering av integriteten hos k\u00e4rnans avbild och firmware genom digital signatur, vid inladdning av k\u00e4rnan med hj\u00e4lp av mekanismen Kexec (laddning av k\u00e4rnan fr\u00e5n redan laddat system).\n<li class=\"l\"> Prestandaoptimering av systemet f\u00f6r virtuell minneshantering har genomf\u00f6rts, effektiviteten vid rensning av minnessidor och cache har f\u00f6rb\u00e4ttrats, och bearbetningen av f\u00f6rfr\u00e5gningar till icke allokerade minnessidor (page faults) har f\u00f6rb\u00e4ttrats.\n<li class=\"l\"> St\u00f6det f\u00f6r NVDIMM har ut\u00f6kats, den angivna permanenta minnesm\u00e4ngden kan nu anv\u00e4ndas som traditionellt RAM.\n<li class=\"l\"> \u00d6verg\u00e5ngen till DTrace 2.0 f\u00f6r dynamisk fels\u00f6kning har genomf\u00f6rts, vilket <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51287\">\u00f6versatts<\/a><\/noindex> f\u00f6r anv\u00e4ndning av eBPF-k\u00e4rnans delsystem. DTrace fungerar nu ovanp\u00e5 eBPF, p\u00e5 samma s\u00e4tt som befintliga sp\u00e5rningsverktyg i Linux arbetar \u00f6ver eBPF.\n<li class=\"l\"> F\u00f6rb\u00e4ttringar har genomf\u00f6rts i OCFS2-filsystemet (Oracle Cluster File System).\n<li class=\"l\"> F\u00f6rb\u00e4ttrad st\u00f6d f\u00f6r Btrfs-filsystemet. M\u00f6jligheten att anv\u00e4nda Btrfs p\u00e5 rotpartitioner har lagts till. Installationsprogrammet har f\u00e5tt ett alternativ f\u00f6r att v\u00e4lja Btrfs vid formatering av enheter. M\u00f6jligheten att placera v\u00e4xlingsfiler p\u00e5 partitioner med Btrfs har lagts till. Btrfs har f\u00e5tt st\u00f6d f\u00f6r komprimering med hj\u00e4lp av ZStandard-algoritmen.\n<li class=\"l\"> \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u0430 \u0434\u043b\u044f \u0430\u0441\u0438\u043d\u0445\u0440\u043e\u043d\u043d\u043e\u0433\u043e \u0432\u0432\u043e\u0434\u0430\/\u0432\u044b\u0432\u043e\u0434\u0430 &#8212; io_uring, \u043a\u043e\u0442\u043e\u0440\u044b\u0439 \u043f\u0440\u0438\u043c\u0435\u0447\u0430\u0442\u0435\u043b\u0435\u043d \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u043e\u0439 \u043f\u043e\u043b\u043b\u0438\u043d\u0433\u0430 \u0432\u0432\u043e\u0434\u0430\/\u0432\u044b\u0432\u043e\u0434\u0430 \u0438 \u0432\u043e\u0437\u043c\u043e\u0436\u043d\u043e\u0441\u0442\u044c\u044e \u0440\u0430\u0431\u043e\u0442\u044b \u043a\u0430\u043a \u0441 \u0431\u0443\u0444\u0435\u0440\u0438\u0437\u0430\u0446\u0438\u0435\u0439, \u0442\u0430\u043a \u0438 \u0431\u0435\u0437 \u0431\u0443\u0444\u0435\u0440\u0438\u0437\u0430\u0446\u0438\u0438.  \u041f\u043e \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 io_uring \u043e\u0447\u0435\u043d\u044c \u0431\u043b\u0438\u0437\u043e\u043a \u043a SPDK \u0438 \u0441\u0443\u0449\u0435\u0441\u0442\u0432\u0435\u043d\u043d\u043e \u043e\u043f\u0435\u0440\u0435\u0436\u0430\u0435\u0442 libaio \u043f\u0440\u0438 \u0440\u0430\u0431\u043e\u0442\u0435 \u0441 \u0432\u043a\u043b\u044e\u0447\u0451\u043d\u043d\u044b\u043c \u043f\u043e\u043b\u043b\u0438\u043d\u0433\u043e\u043c. \u0414\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f io_uring \u0432 \u043a\u043e\u043d\u0435\u0447\u043d\u044b\u0445 \u043f\u0440\u0438\u043b\u043e\u0436\u0435\u043d\u0438\u044f\u0445, \u0440\u0430\u0431\u043e\u0442\u0430\u044e\u0449\u0438\u0445 \u0432 \u043f\u0440\u043e\u0441\u0442\u0440\u0430\u043d\u0441\u0442\u0432\u0435 \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f, \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u0430 \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0430 liburing, \u043f\u0440\u0435\u0434\u043e\u0441\u0442\u0430\u0432\u043b\u044f\u044e\u0449\u0430\u044f \u0432\u044b\u0441\u043e\u043a\u043e\u0443\u0440\u043e\u0432\u043d\u0435\u0432\u0443\u044e \u043e\u0431\u0432\u044f\u0437\u043a\u0443 \u043d\u0430\u0434 \u0438\u043d\u0442\u0435\u0440\u0444\u0435\u0439\u0441\u043e\u043c \u044f\u0434\u0440\u0430;\n<li class=\"l\"> St\u00f6d f\u00f6r l\u00e4get <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50123\">Adiantum<\/a><\/noindex> f\u00f6r snabb kryptering av lagringsenheter.\n<li class=\"l\"> St\u00f6d f\u00f6r komprimering med hj\u00e4lp av algoritmen <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=45058\">Zstandard<\/a><\/noindex> (zstd).\n<li class=\"l\"> I ext4-filsystemet anv\u00e4nds 64-bitars tidsst\u00e4mplar i superblockens f\u00e4lt.\n<li class=\"l\"> I XFS har verktyg inkluderats f\u00f6r att informera om filsystemets integritetsstatus under drift och f\u00f6r att f\u00e5 status p\u00e5 fsck-k\u00f6rningar i realtid.\n<li class=\"l\"> TCP-\u0441\u0442\u0435\u043a \u043f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u043f\u0435\u0440\u0435\u0432\u0435\u0434\u0451\u043d \u043d\u0430 \u043c\u043e\u0434\u0435\u043b\u044c &#171;<noindex><a rel=\"nofollow\" href=\"https:\/\/lwn.net\/Articles\/766564\/\">Early Departure Time<\/a><\/noindex>&#187; \u0432\u043c\u0435\u0441\u0442\u043e &#171;As Fast As Possible&#187; \u043f\u0440\u0438 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0435 \u043f\u0430\u043a\u0435\u0442\u043e\u0432. \u0414\u043b\u044f UDP \u0432\u043a\u043b\u044e\u0447\u0435\u043d\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430  GRO (Generic Receive Offload). \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 \u043f\u0440\u0438\u0451\u043c\u0430 \u0438 \u043e\u0442\u043f\u0440\u0430\u0432\u043a\u0438 TCP-\u043f\u0430\u043a\u0435\u0442\u043e\u0432 \u0432 \u0440\u0435\u0436\u0438\u043c\u0435 zero-copy.\n<li class=\"l\"> Implementeringen av TLS-protokollet p\u00e5 k\u00e4rnniv\u00e5 (KTLS) anv\u00e4nds nu inte bara f\u00f6r s\u00e4nda utan ocks\u00e5 f\u00f6r mottagna data.\n<li class=\"l\"> Som standard \u00e4r nftables aktiverat som backend f\u00f6r brandv\u00e4ggen. Valfritt har st\u00f6d f\u00f6r<br \/>\nbpfilter <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=48117\">St\u00f6d f\u00f6r XDP (eXpress Data Path) subsystemet har lagts till, vilket g\u00f6r att BPF-program kan k\u00f6ras p\u00e5 n\u00e4tverksdrivrutinsniv\u00e5 i Linux med direkt tillg\u00e5ng till DMA-paketbuffern och vid steg innan skbuff-paketbufferten tilldelas av n\u00e4tverksstacken.<\/a><\/noindex>.<\/p>\n<li class=\"l\"> F\u00f6rb\u00e4ttrad och aktiverad vid anv\u00e4ndning av UEFI Secure Boot-l\u00e4get.\n<li class=\"l\"> \u0423\u043b\u0443\u0447\u0448\u0435\u043d \u0438 \u0432\u043a\u043b\u044e\u0447\u0451\u043d \u043f\u0440\u0438 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u0438 UEFI Secure Boot \u0440\u0435\u0436\u0438\u043c <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51591\">L\u00e5sning<\/a><\/noindex>, vilket begr\u00e4nsar root-anv\u00e4ndarens \u00e5tkomst till k\u00e4rnan och blockerar kringg\u00e5ende v\u00e4gar f\u00f6r UEFI Secure Boot. Till exempel i lockdown-l\u00e4get begr\u00e4nsas \u00e5tkomsten till \/dev\/mem, \/dev\/kmem, \/dev\/port, \/proc\/kcore, debugfs, kprobes debug-l\u00e4ge, mmiotrace, tracefs, BPF, PCMCIA CIS (Card Information Structure), vissa ACPI-gr\u00e4nssnitt och CPU:ns MSR-register, samt blockerar kallelser till kexec_file och kexec_load, f\u00f6rhindrar s\u00f6mnl\u00e4ge, begr\u00e4nsar anv\u00e4ndningen av DMA f\u00f6r PCI-enheter, f\u00f6rhindrar import av ACPI-kod fr\u00e5n EFI-variabler, och manipulation av in- och utg\u00e5ngsportar till\u00e5ts inte, inklusive \u00e4ndring av avbrottnummer och in- och utg\u00e5ngsport f\u00f6r den seriella porten.\n<li class=\"l\"> Support f\u00f6r f\u00f6rb\u00e4ttrade instruktioner IBRS (Enhanced Indirect Branch Restricted Speculation) har lagts till, vilket m\u00f6jligg\u00f6r adaptiv till\u00e5telse och avst\u00e4ngning av spekulativ exekvering av instruktioner under hantering av avbrott, systemanrop och kontextbyten. Om Enhanced IBRS st\u00f6ds till\u00e4mpas denna metod f\u00f6r skydd mot attacker av typen Spectre V2 ist\u00e4llet f\u00f6r Retpoline, eftersom den ger h\u00f6gre prestanda.\n<li class=\"l\"> Skyddet i kataloger som \u00e4r skrivbara f\u00f6r alla har f\u00f6rb\u00e4ttrats. I s\u00e5dana kataloger \u00e4r skapandet av FIFO-filer och filer som tillh\u00f6r anv\u00e4ndare som inte matchar katalogens \u00e4gare med flaggan sticky f\u00f6rbjudet.\n<li class=\"l\"> Som standard \u00e4r adressutrymmet f\u00f6r k\u00e4rnan p\u00e5 ARM-system (KASLR) randomiserat. F\u00f6r Aarch64 \u00e4r pekarautentisering aktiverad.\n<li class=\"l\"> \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u0430 \u043f\u043e\u0434\u0434\u0435\u0440\u0436\u043a\u0430 &#171;NVMe over Fabrics TCP&#187;.\n<li class=\"l\"> En virtio-pmem-drivrutin har lagts till, som representerar \u00e5tkomst till lagringsenheter speglade i det fysiska adressutrymmet, s\u00e5som NVDIMM.\n<\/ul>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>K\u00e4lla: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=52670\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Oracle \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b\u0430 \u043f\u0435\u0440\u0432\u044b\u0439 \u0441\u0442\u0430\u0431\u0438\u043b\u044c\u043d\u043e\u0439 \u0432\u044b\u043f\u0443\u0441\u043a Unbreakable Enterprise Kernel 6 (UEK R6), \u0440\u0430\u0441\u0448\u0438\u0440\u0435\u043d\u043d\u043e\u0439 \u0441\u0431\u043e\u0440\u043a\u0438 \u044f\u0434\u0440\u0430 Linux, \u043f\u043e\u0437\u0438\u0446\u0438\u043e\u043d\u0438\u0440\u0443\u0435\u043c\u043e\u0439 \u0434\u043b\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u043d\u0438\u044f \u0432 \u0434\u0438\u0441\u0442\u0440\u0438\u0431\u0443\u0442\u0438\u0432\u0435 Oracle Linux \u0432 \u043a\u0430\u0447\u0435\u0441\u0442\u0432\u0435 \u0430\u043b\u044c\u0442\u0435\u0440\u043d\u0430\u0442\u0438\u0432\u044b \u0448\u0442\u0430\u0442\u043d\u043e\u043c\u0443 \u043f\u0430\u043a\u0435\u0442\u0443 \u0441 \u044f\u0434\u0440\u043e\u043c \u0438\u0437 Red Hat Enterprise Linux. \u042f\u0434\u0440\u043e \u0434\u043e\u0441\u0442\u0443\u043f\u043d\u043e \u0442\u043e\u043b\u044c\u043a\u043e \u0434\u043b\u044f \u0430\u0440\u0445\u0438\u0442\u0435\u043a\u0442\u0443\u0440 x86_64 \u0438 ARM64 (aarch64). \u0418\u0441\u0445\u043e\u0434\u043d\u044b\u0435 \u0442\u0435\u043a\u0441\u0442\u044b \u044f\u0434\u0440\u0430, \u0432\u043a\u043b\u044e\u0447\u0430\u044f \u0440\u0430\u0437\u0431\u0438\u0432\u043a\u0443 \u043d\u0430 \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u0435 \u043f\u0430\u0442\u0447\u0438, \u043e\u043f\u0443\u0431\u043b\u0438\u043a\u043e\u0432\u0430\u043d\u044b \u0432 \u043f\u0443\u0431\u043b\u0438\u0447\u043d\u043e\u043c [&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-76724","post","type-post","status-publish","format-standard","hentry","category-news"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.4 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u041a\u043e\u043c\u043f\u0430\u043d\u0438\u044f Oracle 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