Linus Torvalds ya sanar a wannan Lahadin kasancewar wadatacciyar siga ta 5.6 ta kwayar Linux bayan buga CRs daban-daban. Linux 5.6 ya ƙunshi canje-canje da haɓakawa da yawa. Kamar kowane sabon juzu'i na babban layin ci gaba, sababbi yana kawo canje-canje sama da dubu goma, wasu suna sabunta sabbin ayyuka, wasu kuma suna inganta waɗanda ake dasu.
Maballin fasali na wannan sigar hada da Arm EOPD goyon baya, lokacin sunaye, Mai aikawa da BPF da ayyukan katin BPF da kuma openat2 tsarin kira, aiwatar da VPN WireGuard da dai sauransu.
Kebul 4 karfinsu
Matsayin USB 4 na ɗaya daga cikin manyan fasalulluka na wannan sigar Linux Kernel tun An aiwatar da tallafi na USB4 wanda ya dogara da ƙayyadaddun Thunderbolt 3. A ka'idar, gudu na iya kaiwa 40 Gb / s ta hanyar haɗin USB-C, ban da goyan bayan iko har zuwa watts 100 ta tashar PD (Bayar da Iko). USB4 yana ba ka damar haɗa nuni na 4K ko 8K zuwa USB, kazalika da haɗa jerin na'urorin USB da yawa zuwa sarkar a tashar guda.
Wannan fasahar haɗin, wacce aka kammala ta bazarar da ta gabata kuma ta fito daga Thunderbolt 3, ya kamata ya riga ya bayyana akan tsarin a cikin fewan watanni. Yakamata a tallafawa masu sarrafa Intel Lake Tiger Lake, wadanda suka gaji ayyukan tekun Ice Lake da masu sarrafa kwamfutar tafi-da-gidanka na yanzu.
Gyaran bug a shekara ta 2038
Wani canjin da yazo a Linux 5.6 shine kuskuren shekarar 2038 wanda ya shafi gine-ginen 32-bit saboda matsalar ambaliyar lamba.
A zahiri, Unix da Linux suna adana darajar lokaci a cikin tsari mai lamba 32 mai sanya hannu wanda ke da matsakaicin darajar 2147483647. Bayan wannan lambar, saboda yawan ambaliyar lamba, za a adana ƙimomin azaman lamba mara kyau Wannan yana nufin cewa don tsarin 32-bit, ƙimar lokaci ba za ta iya wuce sakan 2147483647 bayan Janairu 1, 1970.
A cikin kalmomi masu sauki, bayan 03:14:07 UTC a ranar 19 ga Janairu, 2038, saboda yawan ambaliyar lamba, lokacin zai kasance 13 ga Disamba, 1901 maimakon 19 ga Janairu, 2038.
Taimakon WireGuard
Linux 5.6 ya zo tare da fasahar VPN na Wireguard, ta jima tana yawan magana game da kanta. Wannan saboda, a tsakanin sauran abubuwa, ga a kafa hanyar haɗi da sauri, aiki mai kyau da ƙarfi, hanzari da nuna kulawa haɗuwa da juna Bugu da kari, fasahar rami yana da matukar inganci kuma yafi sauki a daidaita shi fiye da tsofaffin fasahohin VPN; Wireguard tana samarda tsaro akan sauraren sauti tare da sabbin matakan algorithms.
WireGuard yana amfani da Curve25519 don musayar maɓalli, ChaCha20 don ɓoyewa, Poly1305 don tabbatar da bayanai, SipHash don mabuɗan maɓalli, da BLAKE2s don zanta. Yana tallafawa Layer 3 don IPv4 da IPv6 kuma yana iya lulluɓe v4-in-v6 kuma akasin haka. Wasu masu ba da sabis na VPN sun karɓi WireGuard kamar Mullvad VPN, AzireVPN, IVPN, da cryptostorm, tun kafin a haɗa ta cikin Linux, saboda ƙirarta "mai kyau".
ARM EOPD goyon baya
Saboda matsalar rauni na narkewar jiki wanda ke bawa mai kawo hari a sararin mai amfani damar karanta bayanai daga sararin kernel ta amfani da haɗin kai na zartarwa da tashoshin yara masu ɓoye Tsaron kernel akan Meltdown shine keɓance na teburin shafi na kernel, gaba daya cire allunan shafin kernel daga taswirar sararin mai amfani. Yana aiki amma yana da matukar muhimmanci kudin yi kuma yana iya tsoma baki tare da amfani da wasu ayyukan sarrafawa.
Koyaya, an yarda dashi cewa keɓance sararin samaniya zai zama da mahimmanci don kare tsarin na wani lokaci mai zuwa.
Akwai wani madadin, wanda shine ƙaddamarwa dangane da E0PD, wanda aka ƙara a matsayin ɓangare na Arm v8.5. E0PD tabbatar da isa daga sararin mai amfani zuwa tsakiyar katin ƙwaƙwalwar ajiya Kullin ana yin shi koyaushe a cikin tsayayyen lokaci, saboda haka guje wa harin aiki tare.
Saboda haka, da E0PD baya hana shi yin aiki da hankali a cikin ƙwaƙwalwa - wanda sararin mai amfani bai kamata ya iya samun damar shi ba, amma yana toshe hanyar tashar wanda akasari ana amfani dashi don cire bayanan fallasawa ta hanyar mummunan zato.
Finalmente idan kanaso ka kara sani game da shi, zaka iya tuntuba mahada mai zuwa.