{"id":35977,"date":"2019-10-31T22:08:56","date_gmt":"2019-10-31T19:08:56","guid":{"rendered":"https:\/\/prohoster.info\/blog\/reliz-yadra-linux-5-2\/"},"modified":"2019-10-31T22:08:56","modified_gmt":"2019-10-31T19:08:56","slug":"reliz-yadra-linux-5-2","status":"publish","type":"post","link":"https:\/\/prohoster.info\/et\/blog\/novosti-interneta\/reliz-yadra-linux-5-2","title":{"rendered":"Linuxi 5.2 tuuma v\u00e4ljalaskmine","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>P\u00e4rast kahte kuud arendusteline Linus Torvalds <noindex><a rel=\"nofollow\" href=\"https:\/\/lkml.org\/lkml\/2019\/7\/7\/281\">esitles<\/a><\/noindex> tugevdamise s\u00fcdamik <noindex><a rel=\"nofollow\" href=\"https:\/\/www.kernel.org\/\">Linux 5.2<\/a><\/noindex>. Oluliste muudatuste hulgas on: Ext4 t\u00f6\u00f6re\u017eiim, mis ei arvesta t\u00e4hti, eraldi s\u00fcsteemi kutsed failis\u00fcsteemi mountimiseks, draiverid GPU-dele Mali 4xx\/6xx\/7xx, v\u00f5imalus t\u00f6\u00f6tada sysctl v\u00e4\u00e4rtuste muutustega BPF programmides, device-mapper moodul dm-dust, kaitse MDS r\u00fcnnakute vastu, Sound Open Firmware toetamine DSP-le, BFQ j\u00f5udluse optimeerimine, PSI (Pressure Stall Information) alam-s\u00fcsteemi viimine Androidi kasutatavusse.<\/p>\n<p>Uues versioonis on aktsepteeritud 15100 parandust 1882 arendajalt,<br \/>\n\u0440\u0430\u0437\u043c\u0435\u0440 \u043f\u0430\u0442\u0447\u0430 &#8212; 62 \u041c\u0431 (\u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u044f \u0437\u0430\u0442\u0440\u043e\u043d\u0443\u043b\u0438 30889 \u0444\u0430\u0439\u043b\u043e\u0432, \u0434\u043e\u0431\u0430\u0432\u043b\u0435\u043d\u043e 625094 \u0441\u0442\u0440\u043e\u043a \u043a\u043e\u0434\u0430, \u0443\u0434\u0430\u043b\u0435\u043d\u043e 531864 \u0441\u0442\u0440\u043e\u043a). \u041e\u043a\u043e\u043b\u043e 45% \u0432\u0441\u0435\u0445 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d\u043d\u044b\u0445 \u0432 5.2<br \/>\nmuudatustest on seotud seadme draiveritega, umbes 21% muudatustest puudutab<br \/>\nspetsiifiliste riistvara arhitektuuride koodi uuendamist, 12%<br \/>\nseondub v\u00f5rgustikust, 3% \u2014 failis\u00fcsteemidest ja 3% sisemistest<br \/>\n\u043f\u043e\u0434\u0441\u0438\u0441\u0442\u0435\u043c\u0430\u043c\u0438 \u044f\u0434\u0440\u0430. 12.4% \u0432\u0441\u0435\u0445 \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0439 \u043f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d\u043e \u043a\u043e\u043c\u043f\u0430\u043d\u0438\u0435\u0439 Intel, 6.3% &#8212; Red Hat, 5.4% &#8212; Google, 4.0% &#8212; AMD, 3.1% &#8212; SUSE, 3% &#8212; IBM, 2.7% &#8212; Huawei,  2.7% &#8212; Linaro, 2.2% &#8212; ARM, 1.6% &#8212; Oracle.<\/p>\n<p><noindex><a rel=\"nofollow\" href=\"https:\/\/kernelnewbies.org\/Linux_5.2\">Peamised<\/a><\/noindex> <noindex><a rel=\"nofollow\" href=\"https:\/\/lwn.net\/Articles\/788532\/\">uuendused<\/a><\/noindex>:<\/p>\n<ul>\n<li class=\"l\"> <b>Disski alams\u00fcsteem, sisend\/v\u00e4ljund ja failis\u00fcsteemid<\/b>\n<ul>\n<li class=\"l\"> Ext4-le on lisatud  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50581\">toetamine<\/a><\/noindex> \u0440\u0430\u0431\u043e\u0442\u044b \u0431\u0435\u0437 \u0440\u0430\u0437\u043b\u0438\u0447\u0438\u044f \u0440\u0435\u0433\u0438\u0441\u0442\u0440\u0430 \u0441\u0438\u043c\u0432\u043e\u043b\u043e\u0432  \u0432 \u0438\u043c\u0435\u043d\u0430\u0445 \u0444\u0430\u0439\u043b\u043e\u0432, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0430\u043a\u0442\u0438\u0432\u0438\u0440\u0443\u0435\u0442\u0441\u044f \u0442\u043e\u043b\u044c\u043a\u043e \u0432 \u043f\u0440\u0438\u0432\u044f\u0437\u043a\u0435 \u043a \u043e\u0442\u0434\u0435\u043b\u044c\u043d\u044b\u043c \u043f\u0443\u0441\u0442\u044b\u043c \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0430\u043c \u043f\u0440\u0438 \u043f\u043e\u043c\u043e\u0449\u0438 \u043d\u043e\u0432\u043e\u0433\u043e \u0430\u0442\u0440\u0438\u0431\u0443\u0442\u0430 &#171;+F&#187; (EXT4_CASEFOLD_FL). \u041f\u0440\u0438 \u0443\u0441\u0442\u0430\u043d\u043e\u0432\u043a\u0435 \u0434\u0430\u043d\u043d\u043e\u0433\u043e \u0430\u0442\u0440\u0438\u0431\u0443\u0442\u0430 \u043d\u0430 \u043a\u0430\u0442\u0430\u043b\u043e\u0433 \u0432\u0441\u0435 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u0438 \u0441 \u0444\u0430\u0439\u043b\u0430\u043c\u0438 \u0438 \u043f\u043e\u0434\u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0430\u043c\u0438 \u0432\u043d\u0443\u0442\u0440\u0438 \u0431\u0443\u0434\u0443\u0442 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u044c\u0441\u044f \u0431\u0435\u0437 \u0443\u0447\u0451\u0442\u0430 \u0440\u0435\u0433\u0438\u0441\u0442\u0440\u0430 \u0441\u0438\u043c\u0432\u043e\u043b\u043e\u0432, \u0432 \u0442\u043e\u043c \u0447\u0438\u0441\u043b\u0435 \u0440\u0435\u0433\u0438\u0441\u0442\u0440 \u0431\u0443\u0434\u0435\u0442 \u0438\u0433\u043d\u043e\u0440\u0438\u0440\u043e\u0432\u0430\u0442\u044c\u0441\u044f \u043f\u0440\u0438 \u043e\u043f\u0435\u0440\u0430\u0446\u0438\u044f\u0445 \u043f\u043e\u0438\u0441\u043a\u0430 \u0438 \u043e\u0442\u043a\u0440\u044b\u0442\u0438\u044f \u0444\u0430\u0439\u043b\u043e\u0432 (\u043d\u0430\u043f\u0440\u0438\u043c\u0435\u0440, \u0444\u0430\u0439\u043b\u044b Test.txt, test.txt \u0438 test.TXT \u0432 \u043f\u043e\u0434\u043e\u0431\u043d\u044b\u0445 \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u0430\u0445 \u0431\u0443\u0434\u0443\u0442 \u0441\u0447\u0438\u0442\u0430\u0442\u044c\u0441\u044f \u043e\u0434\u0438\u043d\u0430\u043a\u043e\u0432\u044b\u043c\u0438). \u041f\u043e \u0443\u043c\u043e\u043b\u0447\u0430\u043d\u0438\u044e \u0424\u0421 \u043f\u0440\u043e\u0434\u043e\u043b\u0436\u0430\u0435\u0442 \u0431\u044b\u0442\u044c \u0440\u0435\u0433\u0438\u0441\u0442\u0440\u043e\u0437\u0430\u0432\u0438\u0441\u0438\u043c\u043e\u0439, \u0437\u0430 \u0438\u0441\u043a\u043b\u044e\u0447\u0435\u043d\u0438\u0435\u043c \u043a\u0430\u0442\u0430\u043b\u043e\u0433\u043e\u0432 \u0441 \u0430\u0442\u0440\u0438\u0431\u0443\u0442\u043e\u043c &#171;chattr +F&#187;;\n<li class=\"l\"> failinimede UTF-8 s\u00fcmbolite t\u00f6\u00f6tlemise funktsioonid on \u00fchtlustatud, mida rakendatakse stringide v\u00f5rdlemise ja normaliseerimise toimingute k\u00e4igus;\n<li class=\"l\"> XFS-ile on lisatud infrastruktuur failis\u00fcsteemi seisundi j\u00e4lgimiseks ja uus ioctl t\u00f6\u00f6kindluse staatuse p\u00e4rimiseks. Tehtud on katse v\u00f5imalus online-skrubatsiooniks superbloki loenduri kontrollimiseks.\n<li class=\"l\"> \u0414\u043e\u0431\u0430\u0432\u043b\u0435\u043d \u043d\u043e\u0432\u044b\u0439 \u043c\u043e\u0434\u0443\u043b\u044c device-mapper &#171;<noindex>dm-dust<\/noindex>\u201e, v\u00f5imaldades simuleerida bad-blokkide ilmumist andmekandjale v\u00f5i vigu andmeedastuses diski lugemisel. Moodul lihtsustab rakenduste ja erinevate salvestuss\u00fcsteemide t\u00f5rkeotsingut ja testimist, arvestades v\u00f5imalikke t\u00f5rkeid;\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/lwn.net\/Articles\/784267\/\">Tehtud<\/a><\/noindex> signifiline sisendi\/v\u00e4ljundi BFQ planeerija j\u00f5udluse optimeerimine. Suure koormuse korral on tehtud optimeeringud <noindex><a rel=\"nofollow\" href=\"https:\/\/algo.ing.unimo.it\/people\/paolo\/disk_sched\/results.php\">v\u00f5imaldavad<\/a><\/noindex> kuni 80% v\u00e4hendada selliste toimingute, nagu rakenduste k\u00e4ivitamine, aega;\n<li class=\"l\"> Lisatud on rida s\u00fcsteemik\u00f5nesid failis\u00fcsteemide mountimiseks: <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=24dcb3d90a1f67fe08c68a004af37df059d74005\">fsopen()<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=a07b20004793d8926f78d63eb5980559f7813404\">open_tree()<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=cf3cba4a429be43e5527a3f78859b1bfd9ebc5fb\">fspick()<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=93766fbd2696c2c4453dd8e1070977e9cd4e6b6d\">fsmount()<\/a><\/noindex>, <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=ecdab150fddb42fe6a739335257949220033b782\">fsconfig()<\/a><\/noindex> ja <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=2db154b3ea8e14b04fee23e3fdfd5e9d17fbc6ae\">move_mount()<\/a><\/noindex>. Need to handle the different stages of mounting separately (process the superblock, obtain file system information, mount, and attach to a mount point), which were previously executed using a common system call mount(). Separate calls allow for more complex mounting scenarios and the ability to perform operations like reconfiguring the superblock, enabling options, changing the mount point, and moving to another namespace. Furthermore, separate processing allows for precise identification of error code causes and setting multiple sources for layered file systems such as overlayfs;\n<li class=\"l\"> A new operation IORING_OP_SYNC_FILE_RANGE has been added to the interface for asynchronous input\/output io_uring, performing actions equivalent to the system call <noindex><a rel=\"nofollow\" href=\"http:\/\/man7.org\/linux\/man-pages\/man2\/sync_file_range.2.html\">sync_file_range()<\/a><\/noindex>, as well as implementing the registration capability of eventfd with io_uring and receiving notifications upon the completion of operations;\n<li class=\"l\"> For the CIFS file system, ioctl FIEMAP has been added, providing efficient extent mapping, along with support for SEEK_DATA and SEEK_HOLE modes;\n<li class=\"l\"> In the FUSE subsystem <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=ad2ba64dd489805e7ddf5fecf166cae1e09fc5c0\">pakutud<\/a><\/noindex> API for managing data caching;\n<li class=\"l\"> Btrfs'i rakenduse qgroups optimeerimine ja fsynci t\u00e4itmise kiirus on suurenenud, et toetada mitu k\u00f5va linki. Parandatud andmete terviklikkuse kontrollkoodi, mis arvestab n\u00fc\u00fcd v\u00f5imaliku m\u00e4lu kahjustusega enne andmete kirjutamist kettale;\n<li class=\"l\"> CEPH-s on lisatud toe eksportimine snapshots'i kaudu NFS-ile;\n<li class=\"l\"> Parandatud NFSv4 monteerimise rakendust re\u017eiimis \u201esoft\u201d (serveri ligip\u00e4\u00e4suviga korral tagastab \u201esoft\u201d re\u017eiim kohe veakoodi, samas kui \u201ehard\u201d re\u017eiimis j\u00e4\u00e4b kontroll k\u00e4est kuni FS-i taaselustamiseni v\u00f5i ajapiiranguni). Uues v\u00e4ljalaskes on ajapiirangu t\u00f6\u00f6tlemine t\u00e4psem, t\u00f5rkej\u00e4rgne taastumine kiirem ning lisatud on uus monteerimisvalik \u201esofterr\u201d, mis v\u00f5imaldab muuta ajapiirangu korral tagastatavat veakoodi (ETIMEDOUT);\n<li class=\"l\"> NFS'i oleku j\u00e4lgimiseks m\u00f5eldud API nfsdcld v\u00f5imaldab NFS-serveril j\u00e4lgida kliendi seisundit taask\u00e4ivitamise ajal. Seega, nfsdcld demon v\u00f5ib n\u00fc\u00fcd toimida nfsdcltrack t\u00f6\u00f6tlejana;\n<li class=\"l\"> AFS jaoks <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=6c6c1d63c243025956f061e67fff3a615aa0f6be\">on lisatud<\/a><\/noindex> baiti vahemiku lukustamise simulatsioon failides (<noindex><a rel=\"nofollow\" href=\"http:\/\/docs.openafs.org\/ReleaseNotesWindows\/ch03s19.html\">Baiti vahemiku lukustamine<\/a><\/noindex>);\n<\/ul>\n<li class=\"l\"> <b>Virtualiseerimine ja turvalisus<\/b>\n<ul>\n<li class=\"l\"> On tehtud t\u00f6\u00f6d, et k\u00f5rvaldada tuuma kohti, mis v\u00f5imaldavad koodi k\u00e4ivitamist kirjutatavatest m\u00e4lu peegelduspiirkondadest, mis v\u00f5imaldab blokeerida potentsiaalseid l\u00fcnki, mida \u00e4kilise r\u00fcnnaku korral \u00e4ra kasutada.\n<li class=\"l\"> Lisatud on uus kernel'i k\u00e4surea parameeter \u00abmitigations=\u00bb, mis pakub lihtsustatud viisi hallata, kuidas aktiveerida erinevaid kaitsetehnikaid, mis on seotud CPU spekuleeriva k\u00e4itamise haavatavustega. Parameeter \u00abmitigations=off\u00bb keelab k\u00f5ik olemasolevad meetodid, samas kui vaikimisi re\u017eiim \u00abmitigations=auto\u00bb aktiveerib kaitse, kuid ei m\u00f5juta Hyper Threadingu kasutamist. Re\u017eiim \u00abmitigations=auto,nosmt\u00bb keelab lisaks Hyper Threadingu, kui kaitsemeetod seda n\u00f5uab.\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/linus\/0d7a78643f6972214e99205b364e508f8ea9598e\">Lisatud<\/a><\/noindex> elektronilise digitaalallkirja tugi vastavalt \u0413\u041e\u0421\u0422 \u0420 34.10-2012 (RFC 7091, ISO\/IEC 14888-3), <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=0d7a78643f6972214e99205b364e508f8ea9598e\">v\u00e4lja t\u00f6\u00f6tatud<\/a><\/noindex> Vitaly Chikunovilt \u00abBasaalt SPO\u00bb poolt. Sisseehitatud TLS-i teostusse on lisatud toetust AES128-CCM-ile. Moduuli crypto_simd on lisatud tugi AEAD algoritmidele;\n<li class=\"l\"> Kconfigis <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=9f671e58159adea641f76c56d1f0bbdcb3c524ff\">on lisatud<\/a><\/noindex> eraldi sektsioon \u00abkernel hardening\u00bb koos valikutega tuuma kaitse tugevdamiseks. Praegu on uues sektsioonis kogutud ainult s\u00e4tted, mis aktiveerivad GCC pluginate kontrollide tugevdamise;\n<li class=\"l\"> Yadrea kood on peaaegu <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=b4b52b881cf0\">vabastatud<\/a><\/noindex> katkestuseta case avaldusi switch-is (ilma return v\u00f5i break'i p\u00e4rast iga case plokki). J\u00e4\u00e4nud on parandada 32 2311 juhtumist sellise switch'i kasutamisest, mille j\u00e4rel saab kernel'i kompileerimisel rakendada re\u017eiimi \u00ab-Wimplicit-fallthrough\u00bb;\n<li class=\"l\"> PowerPC arhitektuuri jaoks on rakendatud toega riistvaralisi mehhanisme, et piirata soovimatuid juurdep\u00e4\u00e4su teid tuumale kasutajaandmetele;\n<li class=\"l\"> Lisatud kood blokeerimiseks  <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=50684\">r\u00fcnnakute<\/a><\/noindex> MDS (Microarchitectural Data Sampling) klassi Intel'i protsessorites. S\u00fcsteemi haavatavuse kontrollimiseks saab kasutada SysFS-muutujat \"\/sys\/devices\/system\/cpu\/vulnerabilities\/mds\". <noindex><a rel=\"nofollow\" href=\"https:\/\/www.kernel.org\/doc\/html\/latest\/admin-guide\/hw-vuln\/mds.html\">Saadaval<\/a><\/noindex> kaks kaitsere\u017eiimi: t\u00e4isre\u017eiim, mis n\u00f5uab uuendatud mikrokoodi olemasolu, ja \u00fcmbers\u00f5idure\u017eiim, mis ei garanteeri t\u00e4ielikku CPU puhverdatud andmete kustutamist, kui juhtimine antakse kasutajaruumi v\u00f5i k\u00fclg- s\u00fcsteemile. Kaitsere\u017eiimide haldamiseks on tuuma lisatud parameeter \"mds=\", mis v\u00f5ib v\u00f5tta v\u00e4\u00e4rtusi \"full\", \"full,nosmt\" (+ Hyper-Threading'i v\u00e4ljal\u00fclitamine) ja \"off\";\n<li class=\"l\"> x86-64 s\u00fcsteemides on IRQ, silumisete ja erandihaldurite jaoks lisatud \"stack guard-page\" kaitse, mille olemus seisneb m\u00e4lulehtede vahetamisest, mille piiri otsimine juhib erandi genereerimisele (page-fault);\n<li class=\"l\"> Lisatud on sysctl-seade vm.unprivileged_userfaultfd, mis reguleerib mitteprivileeritud protsesside poolt s\u00fcsteemik\u00f5ne userfaultfd() kasutamise v\u00f5imalust;\n<\/ul>\n<li class=\"l\"> <b>V\u00f5rgu alams\u00fcsteem<\/b>\n<ul>\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=d15662682db232da77136cd348f4c9df312ca6f9\">Lisatud<\/a><\/noindex> IPv6 v\u00e4ravate tugi IPv4 marsruutide jaoks. N\u00e4iteks on n\u00fc\u00fcd v\u00f5imalik m\u00e4\u00e4rata marsruutimisreegleid, nagu \"ip ro add 172.16.1.0\/24 via inet6 2001:db8::1 dev eth0\";\n<li class=\"l\"> ICMPv6 jaoks on rakendatud ioctl-k\u00f5nesid icmp_echo_ignore_anycast ja icmp_echo_ignore_multicast, et ignoreerida ICMP ECHO-d anycast ja<br \/>\nmulticast aadresside jaoks. <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=0bc199854405543b0debe67c735c0aae94f1d319\">Lisatud<\/a><\/noindex> ICMPv6 pakettide t\u00f6\u00f6tlemise intensiivsuse piiramise v\u00f5imalus;<\/p>\n<li class=\"l\"> B.A.T.M.A.N. mesh-protokollile (\"Better Approach To Mobile Adhoc Networking\"), mis v\u00f5imaldab luua detsentraliseeritud v\u00f5rke, kus iga s\u00f5lm on \u00fchendatud l\u00e4bi naabers\u00f5lmede. <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/linus\/32e727449c792b689c2a06a8b4cc9fef6270c5a7\">on lisatud<\/a><\/noindex> on lisatud tugi multicastist unicastisse \u00fcleminekuks, samuti haldamise v\u00f5imalus l\u00e4bi sysfs;\n<li class=\"l\"> Ethtoolis <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=3aeb0803f7ea11ff2fc478f7d58f2b8e713af380\">lisatud<\/a><\/noindex> on uus parameeter Fast Link Down, mis v\u00f5imaldab v\u00e4hendada teate saamise aega lingi katkestamise s\u00fcndmuse kohta 1000BaseT jaoks (tavaliselt on viivitus kuni 750 ms);\n<li class=\"l\"> Ilmnes <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/linus\/1713cb37bf671e5d98919536941a8b56337874fd\">v\u00f5imalus<\/a><\/noindex> Foo-Over-UDP tunnelite seondumise v\u00f5imalus kindlale aadressile, v\u00f5rguliidesele v\u00f5i soketile (varem tehti seondumine ainult \u00fchise maskiga);\n<li class=\"l\"> Traadita tahvli raames <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=cb74e9775871f8c82a1297cf76209f10ab5bbe3d\">tagatud<\/a><\/noindex> v\u00f5imalus teostada t\u00f6\u00f6tlejaid<br \/>\nOWE (Opportunistic Wireless Encryption) kasutaja ruumis;<\/p>\n<li class=\"l\"> Netfilteri nat-ahelatesse on lisatud toetust inet aadressi perekonnale (n\u00e4iteks n\u00fc\u00fcd saab kasutada \u00fcht reeglit t\u00f5lkimiseks ipv4 ja ipv6 t\u00f6\u00f6tlemiseks, ilma reeglite eraldamiseta ipv4 ja ipv6 jaoks);\n<li class=\"l\"> Netlinkis <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=ef6243acb4782df587a4d7d6c310fa5b5d82684b\">lisatud<\/a><\/noindex> <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=8cb081746c031fb164089322e2336a0bf5b3070c\">re\u017eiim<\/a><\/noindex> strict rangeks kontrollimiseks, et k\u00f5ik s\u00f5numid ja atribuudid oleksid korrektse suurusega, milles ei lubata \u00fcletada oodatud atribuutide m\u00f5\u00f5tmeid ja keelatakse lisaandmete lisamine s\u00f5numite l\u00f5ppu;\n<\/ul>\n<li class=\"l\"> <b>M\u00e4lu ja s\u00fcsteemiteenused<\/b>\n<ul>\n<li class=\"l\"> S\u00fcsteemi s\u00fcsteemikutsesse clone() on lisatud lipp CLONE_PIDFD, mille m\u00e4\u00e4ramisel tagastatakse vanemprotsessile failikirje &#171;pidfd&#187;, mis on seotud loodud alamprotsessiga. Seda failikirjet saab n\u00e4iteks kasutada signaalide saatmiseks ilma, et tuleks muretseda v\u00f5istlusolukorra p\u00e4rast (kohe p\u00e4rast signaali saatmiseks v\u00f5ib siht-PID vabastada, kuna protsess on l\u00f5petatud ja see on h\u00f5ivatud teise protsessiga);\n<li class=\"l\"> Teise versiooni cgroups on lisatud freezer kontrolleri funktsioon, mis v\u00f5imaldab talitada cgroupi t\u00f6\u00f6d ja ajutiselt vabastada m\u00f5ned ressursid (CPU, sisend\/v\u00e4ljund ja potentsiaalselt isegi m\u00e4lu) teiste \u00fclesannete t\u00e4itmiseks. Halduse teostamine k\u00e4ib cgroup.freeze ja cgroup.events juhtfailide kaudu cgroupi puus. Cgroup.freeze'i kirjutamine v\u00e4\u00e4rtusega 1 k\u00fclmutab protsessid praeguses cgroupis ja k\u00f5igis alamgruppides. Kuna k\u00fclmutamine n\u00f5uab teatavat aega, on lisatud fail cgroup.events, mille kaudu on v\u00f5imalik saada teavet operatsiooni l\u00f5petamise kohta.\n<li class=\"l\"> <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=e1cf33aafb84\">Tagatud<\/a><\/noindex> m\u00e4lu atribuutide ekspordiga, mis on seotud iga s\u00f5lmega sysfs-is, mis v\u00f5imaldab kasutajaruumi kaudu m\u00e4\u00e4rata m\u00e4lupankade t\u00f6\u00f6tlemise iseloomu heterogeensete m\u00e4lu s\u00fcsteemide puhul;\n<li class=\"l\"> T\u00e4iendatud PSI (Pressure Stall Information) aluss\u00fcsteem, mis v\u00f5imaldab anal\u00fc\u00fcsida erinevate ressursside (CPU, m\u00e4lu, sisend\/v\u00e4ljund) ooteaega teatud \u00fclesannete v\u00f5i protsesside kogumite jaoks cgroup'is. PSI abil saavad kasutaja ruumi t\u00f6\u00f6tlejad paremini hinnata s\u00fcsteemi koormust ja t\u00f6\u00f6 aeglustumise iseloomu v\u00f5rreldes Load Average'iga. Uues versioonis on toetatud tundlikkuse l\u00e4vendite seadistamise v\u00f5imalus ja poll() s\u00fcsteemik\u00f5ne kasutamine, et saada teateid seadistatud l\u00e4viv\u00e4\u00e4rtuste \u00fcletamisest kindla ajavahemiku jooksul. See v\u00f5imalus v\u00f5imaldab Androidis j\u00e4lgida m\u00e4lu puuduj\u00e4\u00e4ki varajases etapis, tuvastada probleemide allika ja sulgeda ebaolulised rakendused, v\u00e4ltides sellega kasutajale m\u00e4rgatavate probleemide tekkimist. Stressitestimise k\u00e4igus n\u00e4itas PSI-p\u00f5hbine m\u00e4lu j\u00e4lgimise vahend 10 korda v\u00e4hem valeh\u00e4ireid v\u00f5rreldes vmpressure statistika tulemusega.\n<li class=\"l\"> Koodi optimeerimine BPF-programmide kontrollimiseks on tehtud, mis v\u00f5imaldab suurte programmide kontrolli k\u00e4itada kuni 20 korda kiiremini. Optimeerimise tulemusel t\u00f5steti BPF-programmide suuruse piiri 4096-lt miljoni k\u00e4suteni;\n<li class=\"l\"> BPF-programmide jaoks <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=d859900c4c56\">on esitatud<\/a><\/noindex> on v\u00f5imalus p\u00e4\u00e4seda juurde globaalsetele andmetele, mis lubab m\u00e4\u00e4rata programmides globaalsetes muutujates ja konstantsides;\n<li class=\"l\"> Lisatud <noindex><a rel=\"nofollow\" href=\"https:\/\/github.com\/torvalds\/linux\/blob\/master\/Documentation\/bpf\/prog_cgroup_sysctl.rst\">API<\/a><\/noindex>, v\u00f5imaldades BPF-programmidest kontrollida sysctl-i parameetrite muutusi;\n<li class=\"l\"> MIPS32 arhitektuuri jaoks on ellu kutsutud JIT-kompilaator eBPF virtuaalmasinale;\n<li class=\"l\"> 32-bitise PowerPC arhitektuuri jaoks on lisatud KASan (Kernel address sanitizer) silumise t\u00f6\u00f6riista tugi, mis aitab tuvastada m\u00e4luhalduse vigu;\n<li class=\"l\"> x86-64 s\u00fcsteemides on eemaldatud piirm\u00e4\u00e4r krashi korral (crash-dump) olekudumpide asetusele m\u00e4lu aladel \u00fcle 896MB;\n<li class=\"l\"> s390 arhitektuuri jaoks on rakendatud tuumade aadressiruumi randomiseerimise (KASLR) toimet ja digitaalsete allkirjade kontrollimise v\u00f5imalust tuuma laadimisel kexec_file_load() kaudu;\n<li class=\"l\"> PA-RISC arhitektuuri jaoks on lisatud tuuma siluri (KGDB) tugi, sihtm\u00e4rkide ja kprobes'i toetamine;\n<\/ul>\n<li class=\"l\"> <b>Seadmed<\/b>\n<ul>\n<li class=\"l\"> Komplekti kuulub draiver <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=a1d2a6339961efc078208dc3b2f006e9e9a8e119\">Lima<\/a><\/noindex> Mali 400\/450 GPU-d jaoks, mida kasutatakse paljude vanade ARM-architecture'i kiipide jaoks. Uute Mali GPU-de jaoks on lisatud Panfrost draiver, mis toetab Midgardi (Mali-T6xx, Mali-T7xx, Mali-T8xx) ja Bifrosti (Mali G3x, G5x, G7x) mikroarhitektuuriga kiipe.\n<li class=\"l\"> Lisatud tugi heliseadmetele, mis kasutavad avatud p\u00fcsivara. <noindex><a rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=48266\">Sound Open Firmware<\/a><\/noindex> (<noindex><a rel=\"nofollow\" href=\"https:\/\/www.sofproject.org\/\">SOF<\/a><\/noindex>). Kuigi avatud draiverid on olemas, on helichippide p\u00fcsivara kood endiselt suletud ja tarnitakse binaarses vormis. Sound Open Firmware projekt on v\u00e4lja t\u00f6\u00f6tatud Intel'i poolt avatud p\u00fcsivara loomiseks DSP-kiipidele, mis on seotud helit\u00f6\u00f6tlusega (hiljem liitus arendusega ka Google). Praegu on projekti raames juba ette valmistatud avatud p\u00fcsivara helikiipide jaoks Intel'i platvormidel: Baytrail, CherryTrail, Broadwell, ApolloLake, GeminiLake, CannonLake ja IceLake.\n<li class=\"l\"> Intel'i (i915) DRM-draiveris on lisatud tugi kiipidele.<br \/>\nElkhartlake (Gen11). Lisatud PCI-identifikaatorid Comet Lake (Gen9) kiipidele. Stabiliseeritud Icelake kiipide tugi, millele on samuti lisatud t\u00e4iendavad PCI-seadmestiku identifikaatorid.<br \/>\n <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=d57b39e3ee3cdb4b00452090e386d197980cefc9\">L\u00fclitatud<\/a><\/noindex><br \/>\nvideo m\u00e4lu kahe puhvri vahel as\u00fcnkroonse vahetamise re\u017eiim (async flip), kui kirjutamise operatsioonid kulgevad mmio kaudu, mis t\u00f5stis m\u00f5nede 3D rakenduste j\u00f5udlust m\u00e4rkimisv\u00e4\u00e4rselt (n\u00e4iteks 3DMark Ice Stormi testis kasvas j\u00f5udlus 300-400%). Lisatud tugi tehnoloogiale <noindex><a rel=\"nofollow\" href=\"https:\/\/ru.wikipedia.org\/wiki\/HDCP\">HDCP2.2<\/a><\/noindex> (Khigh-bandwidth Digital Content Protection) video signaali kr\u00fcpteerimiseks, mis edastatakse HDMI kaudu;<\/p>\n<li class=\"l\"> amdgpu draiveris GPU Vega20 <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=457109829f4ee4107e8c7108237afba21fabbb5e\">on lisatud<\/a><\/noindex>  tugi RAS (Reliability, Availability, Serviceability) ning eksperimentaalne tugi SMU 11 alam\u00fcsteemile, mis asendab Powerplay tehnoloogiat. GPU Vega12 jaoks <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=750cced1c08b5258202f29ed954513be8f38df1b\">on lisatud<\/a><\/noindex> tugi BACO re\u017eiimile (Bus Active, Chip Off). Lisatud algne tugi XGMI, k\u00f5rge l\u00e4bilaskev\u00f5imega bussile (PCIe 4.0) GPU \u00fchendamiseks. amdkfd draiverisse on lisatud puuduvad Polaris10 GPU kaartide identifikaatorid;\n<li class=\"l\"> Nouveau draiveris on lisatud tugi NVIDIA Turing 117 (TU117, mida kasutatakse GeForce GTX 1650) aluseliste plaatide jaoks.<br \/>\n kconfig <noindex><a rel=\"nofollow\" href=\"https:\/\/git.kernel.org\/pub\/scm\/linux\/kernel\/git\/torvalds\/linux.git\/commit\/?id=b30a43ac7132cdda833ac4b13dd1ebd35ace14b7\">on lisatud<\/a><\/noindex> seaded, et v\u00e4lja l\u00fclitada aegunud funktsioonid, mis ei ole enam kasutuses aktuaalsetes libdrm v\u00e4ljaannetes;<\/p>\n<li class=\"l\"> API-s DRM ja draiveris amdgpu on lisatud toe &#171;ajatelgede&#187; s\u00fcnkroniseerimise objektidele, mis v\u00f5imaldavad v\u00e4ltida klassikalisi lukustusi.\n<li class=\"l\"> Staging haru peamistele yh\u00e4 viidikele vboxvideo draiveri virtuaalsele GPU-le VirtualBox;\n<li class=\"l\"> GFX kiibi SoC ASPEED jaoks on lisatud aspeed draiver;\n<li class=\"l\"> Toetatakse ARM SoC ja Intel Agilex (SoCFPGA) plaate, NXP i.MX8MM, Allwinner (RerVision H3-DVK (H3), Oceanic 5205 5inMFD, Beelink GS2 (H6), Orange Pi 3 (H6)), Rockchip (Orange Pi RK3399, Nanopi NEO4, Veyron-Mighty Chromebook), Amlogic: SEI Robotics SEI510;<br \/>\nST Micro (stm32mp157a, stm32mp157c), NXP (<br \/>\n    Eckelmann ci4x10 (i.MX6DL),<\/p>\n<p>    i.MX8MM EVK (i.MX8MM),<\/p>\n<p>    ZII i.MX7 RPU2 (i.MX7),<\/p>\n<p>    ZII SPB4 (VF610),<\/p>\n<p>    Zii Ultra (i.MX8M),<\/p>\n<p>    TQ TQMa7S (i.MX7Solo),<\/p>\n<p>    TQ TQMa7D (i.MX7Dual),<\/p>\n<p>    Kobo Aura (i.MX50),<\/p>\n<p>    Menlosystems M53 (i.MX53)), NVIDIA Jetson Nano (Tegra T210).<\/p>\n<\/ul>\n<\/ul>\n<p>Samas ajal, Ladina-Ameerika vaba tarkvara fond <noindex><a rel=\"nofollow\" href=\"http:\/\/www.fsfla.org\/ikiwiki\/selibre\/linux-libre\/\">vormis<\/a><\/noindex><br \/>\nvariant <noindex><a rel=\"nofollow\" href=\"http:\/\/www.fsfla.org\/ikiwiki\/selibre\/linux-libre\/\">t\u00e4ielikult vaba kernel 5.2<\/a><\/noindex> &#8212; <noindex><a rel=\"nofollow\" href=\"http:\/\/linux-libre.fsfla.org\/pub\/linux-libre\/releases\/5.2-gnu\/\">Linux-libre 5.2-gnu<\/a><\/noindex>, mis on puhastatud vahem\u00e4lu koostisosadest ja draiveritest, mis sisaldavad mitte-vabasid komponente v\u00f5i koodil\u00f5ike, mille kasutusala on tootja poolt piiritletud. Uues v\u00e4ljaandes on lisatud failide laadimine,<br \/>\nSound Open Firmware. Draiverites on keelatud blobide laadimine<br \/>\n mt7615, rtw88, rtw8822b, rtw8822c, btmtksdio, iqs5xx, ishtp ja ucsi_ccg. Draiverites ja ixp4xx, imx-sdma, amdgpu, nouveau ja goya alams\u00fcsteemides on uuendatud blobide puhastamise koodi ning mikrokoodi dokumentatsioonis. r8822be draiveris on blobide puhastamine l\u00f5petatud seoses selle eemaldamisega.<\/p>\n<p><noindex><a rel=\"nofollow\" name=\"link\"><\/a><\/noindex><\/p>\n<p>Allikas: <a \ncontent=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=51051\">opennet.ru<\/a><\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0441\u043b\u0435 \u0434\u0432\u0443\u0445 \u043c\u0435\u0441\u044f\u0446\u0435\u0432 \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u041b\u0438\u043d\u0443\u0441 \u0422\u043e\u0440\u0432\u0430\u043b\u044c\u0434\u0441 \u043f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u0438\u043b \u0440\u0435\u043b\u0438\u0437 \u044f\u0434\u0440\u0430 Linux 5.2. \u0421\u0440\u0435\u0434\u0438 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