Linux 5.14 los nrog kev txhim kho tiv thaiv Spectre thiab Meltdown, txhawb kev txhawb nqa thiab ntau ntxiv

Ntau hnub dhau los Linus Torvalds tshaj tawm tias muaj kev ruaj khov ntawm Linux 5.14 nyob rau hauv uas kev txhawb nqa lub kernel yog qhov tseem ceeb, txhawb rau thaj chaw nco nrog MEMFD_SECRET, txuas ntxiv kev txhawb nqa rau AMD Alder Lake, Yellow Carp thiab Beige Goby cov duab kos, txhawb nqa rau AMD SmartShift laptops, txhawb rau Raspberry Pi 400, ntawm lwm qhov tshiab.

Linux 5.14 tuaj rau lub sijhawm tshwj xeeb, txij li hnub tseem ceeb 30 kuj tseem ua kev zoo siab txij li tus tsim Linus Torvalds ua ntej tshaj tawm Linux. Lub sijhawm no, Linux tau dhau los ntawm kev nyiam ua rau dhau los ua Internet kev tsim vaj tsev.

Linus Torvalds sau hauv Linux 5.14 tshaj tawm:

"Kuv paub tias txhua tus yuav tsum tau tibneeg hu tauj coob nrog txhua qhov kev seev cev zoo nkauj thiab ua tiav thiab tag nrho lwm yam kev ua koob tsheej 30 xyoo, tab sis qee lub sijhawm lawv yuav tsum nkees. Tsis tu ncua sparkles, foob pob hluav taws thiab champagne. 

"Lub tsho hnav los yog tus Tsov tus tw tawb tsis yog qhov yooj yim tshaj plaws. Kev ua koob tsheej yuav kav ob peb lub lis piam ntxiv, tab sis koj yuav xav tau ua pa me ntsis. Thiab thaum qhov ntawd tshwm sim, Kuv muaj yam koj xav tau: hloov tshiab ntawm cov ntsiav los sim thiab txaus siab. Version 5.14 nyob ntawm no, nws tsuas yog tos koj sim nws thiab ceeb toom koj txog lub hom phiaj ntawm txhua qhov kev ua koob tsheej no, "nws hais ntxiv.

Cov xov xwm tseem ceeb hauv Linux 5.14

Li qub, Linux 5.14 los nrog tus tswv tsev txhim kho thiab cov yam ntxwv tshiab. Ntawm qhov kev hloov pauv tseem ceeb tshaj plaws yog tsis ntseeg memfd_secret thiab lub sijhawm nruab nrab vim tias ob qho tib si yog kev ua haujlwm tu huv los txo qis Intel's Spectre thiab Meltdown qhov tsis zoo.

Rau nws qhov memfd_secret tso cai rau cov ntawv thov los tsim thaj chaw nco uas tsuas yog daim ntawv thov no tuaj yeem nkag mus. Txawm tias lub ntsiav tsis tuaj yeem nkag mus rau thaj chaw nco. Uas yog qhov tseem ceeb, vim tias Spectre thiab Meltdown txhais tau tias cov ntaub ntawv cached tuaj yeem nkag tau, memfd_secret tau tsim los muab qhov chaw nyab xeeb rau cov yuam sij lossis tus lej zais.

Raws li rau tus tub ntxhais tshiab programming code, qhov no tseem ceeb, thiabmus rau ib qho ntawm txoj hauv kev los txo Spectre thiab Meltdown yog kom tsis txhob nkag siab. Linux tam sim no koj tuaj yeem ua kom hyperthreading ua tau zoo dua thiab xyuas kom ntseeg tau tias qhov ua haujlwm tau zoo thiab ntseeg tau tsawg dua tsis faib cov kernel thiab tsim kev pheej hmoo zoo ib yam li Spectre.

Lwm qhov tshiab hauv Linux 5.14 yog a kev hloov kho tshiab yog tsom rau cov neeg ua haujlwm hyperscaleDhau li ntawd rau Intel kernel version 5.14 ntxiv kev txhawb nqa ntxiv rau Chipzilla's Alder Lake platform, uas tso ntau hom tub ntxhais rau ntawm ib qho nti thiab ua ntej qhov tseem ceeb ua haujlwm, ntxiv rau siv Intel TSX (Transactional Synchronization Extensions) yog neeg xiam los ntawm lub neej ntawd, uas muab txoj hauv kev los txhim kho kev ua haujlwm ntawm ntau daim ntawv thov los ntawm kev tshem tawm kev ua haujlwm uas tsis tsim nyog. Kev txuas ntxiv yog neeg xiam oob khab vim muaj peev xwm ua tau Zombieload tawm tsam.

Nws tseem tau sau tseg tias kev txhawb nqa rau RISC-V architecture tau zoo dua, uas tam sim no ptso cai rau koj kom nkag tau zoo dua rau qee qhov haujlwm tseem ceeb, xws li lub cim xeeb ua haujlwm.

Ntxiv thiab, suav nrog ntawm SimpleDRM txhim kho GPU tuav (DRM sawv rau Tus Thawj Coj Ncaj Ncees hauv qhov no). Rau nws ib feem, Dell tau muab tus tsav tsheb los kaw lub webcams thiab microphones ntawm qib kho vajtse, txhawm rau txhawm rau qhib kev hloov pauv lossis cov yuam sij ua ke uas ua zoo ib yam ntawm nws lub khoos phis tawj.

Raws li rau kev txhim kho suab hauv no version ib tus neeg tsav tsheb USB qis qis qis suav nrog, tus tsav tsheb tshiab txo qis latency thaum ua suab thiab tau siv nrog PulseAudio, JACK, thiab PipeWire, ntxiv rau Lub suab codecs rau Rockchip RK817 thiab Qualcomm WCD9380 / WCD9385 suav nrog.

Ntawm cov khoom muaj txiaj ntsig ntawm kev txhawb nqa kho vajtse yog tus lej tswj hwm Sparx5 lub network hloov pauv, Sony IMX208 cov cim, thiab SparkFun Qwiic joysticks, ntxiv rau Linux 5.14 los nrog kev txhawb nqa tag nrho rau Raspberry Pi 400.

Thaum kawg, muaj kev siv zog txuas ntxiv txhawm rau txhawb Linux rau cov thev naus laus zis tshiab thiab tshwm sim, suav nrog USB 4 thiab AMD Beige Goby & Yellow Carp cov duab kos duab.

Yog tias koj xav paub ntau ntxiv txog qhov hloov tshiab no, koj tuaj yeem ua tau khij cov ntsiab lus hauv qhov txuas hauv qab no.


Cov ntsiab lus ntawm tsab xov xwm ua raws li peb cov ntsiab cai ntawm kev tswj hwm kev ncaj nceesCov. Tshaj tawm ib qho yuam kev nyem no.

Yog thawj tus tuaj tawm tswv yim

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Koj email chaw nyob yuav tsis tsum luam tawm. Yuav tsum tau teb cov cim nrog *

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