{"id":100067,"date":"2021-04-30T16:23:15","date_gmt":"2021-04-30T14:23:15","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-emulyatora-qemu-6-0"},"modified":"2021-04-30T16:23:15","modified_gmt":"2021-04-30T14:23:15","slug":"vypusk-emulyatora-qemu-6-0","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/news\/vypusk-emulyatora-qemu-6-0","title":{"rendered":"Publikimi i emulatorit QEMU 6.0","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"
Lansohet versioni i projektit QEMU 6.0. Si emulator, QEMU lejon q\u00eb t\u00eb ekzekutoni nj\u00eb program t\u00eb nd\u00ebrtuar p\u00ebr nj\u00eb platform\u00eb harduerike, n\u00eb nj\u00eb sistem me nj\u00eb arkitektur\u00eb krejt\u00ebsisht t\u00eb ndryshme, p\u00ebr shembull, t\u00eb ekzekutoni nj\u00eb aplikacion p\u00ebr ARM n\u00eb nj\u00eb PC t\u00eb pajtuesh\u00ebm me x86. N\u00eb modalitetin e virtualizimit n\u00eb QEMU, performanca e ekzekutimit t\u00eb kodit n\u00eb nj\u00eb mjedis t\u00eb izoluar \u00ebsht\u00eb e af\u00ebrt me sistemin hardueror p\u00ebr shkak t\u00eb ekzekutimit t\u00eb drejtp\u00ebrdrejt\u00eb t\u00eb instrukcioneve n\u00eb CPU dhe angazhimit t\u00eb hipervizorit Xen ose modulit KVM. <\/p>\n
Fillimisht projekti u krijua nga Fabrice Bellard me q\u00ebllimin e mund\u00ebsimit t\u00eb ekzekutimit t\u00eb skedar\u00ebve ekzekutiv\u00eb t\u00eb nd\u00ebrtuar p\u00ebr platform\u00ebn x86 n\u00eb arkitektura t\u00eb ndryshme nga x86. Gjat\u00eb viteve t\u00eb zhvillimit, u shtua mb\u00ebshtetje p\u00ebr emulimin e plot\u00eb t\u00eb 14 arkitekturave harduerike dhe numri i pajisjeve harduerike t\u00eb emuluara kaloi 400. N\u00eb p\u00ebrgatitje p\u00ebr versionin 6.0, u b\u00ebn\u00eb m\u00eb shum\u00eb se 3300 ndryshime nga 268 zhvillues. <\/p>\n
Shtuar moduli FUSE p\u00ebr eksportimin e pajisjeve bllok, q\u00eb lejon montimin e nj\u00eb kopjeje t\u00eb gjendjes s\u00eb \u00e7do pajisjeje bllok, q\u00eb p\u00ebrdoret n\u00eb sistemin mysafir. Eksporti kryhet p\u00ebrmes komand\u00ebs QMP block-export-add ose p\u00ebrmes opsionit «—export» n\u00eb utilitarin qemu-storage-daemon.\n
Emulatori ARM ka shtuar mb\u00ebshtetje p\u00ebr arkitektur\u00ebn ARMv8.1-M ‘Helium’ dhe procesor\u00ebt Cortex-M55, si dhe instruksione t\u00eb avancuara ARMv8.4 TTST, SEL2 dhe DIT. \u00cbsht\u00eb shtuar mb\u00ebshtetje p\u00ebr platformat ARM mps3-an524 dhe mps3-an547. P\u00ebr platformat xlnx-zynqmp, xlnx-versal, sbsa-ref, npcm7xx dhe sabrelite \u00ebsht\u00eb realizuar emulimi shtes\u00eb i pajisjeve.\n
P\u00ebr ARM n\u00eb modet e emulimit n\u00eb nivelin e sistemit dhe ambientin e p\u00ebrdoruesit, \u00ebsht\u00eb implementuar mb\u00ebshtetje p\u00ebr zgjerimin ARMv8.5 MTE (MemTag, Zgjatja e Etiketimit t\u00eb Memories), e cila lejon lidhjen e etiketave me \u00e7do operacion t\u00eb alokimit t\u00eb memories dhe organizimin e nj\u00eb kontrolli t\u00eb treguesit gjat\u00eb aksesit n\u00eb memorie, i cili duhet t\u00eb lidhet me etiket\u00ebn e sakt\u00eb. Ky zgjerim mund t\u00eb p\u00ebrdoret p\u00ebr t\u00eb parandaluar shfryt\u00ebzimin e dob\u00ebsive q\u00eb ndodhin p\u00ebr shkak t\u00eb qasjes n\u00eb blloqe memories q\u00eb jan\u00eb \u00e7liruar tashm\u00eb, mbipopullimeve t\u00eb tampon\u00ebve, qasjes p\u00ebrpara inicializimit dhe p\u00ebrdorimit jasht\u00eb kontekstit aktual.\n
N\u00eb emulatorin e arkitektur\u00ebs 68k \u00ebsht\u00eb shtuar mb\u00ebshtetje p\u00ebr nj\u00eb tip t\u00eb ri t\u00eb makinave t\u00eb emuluara «virt», q\u00eb p\u00ebrdorin pajisjet virtio p\u00ebr optimizimin e performanc\u00ebs.\n
N\u00eb emuluesin e arkitektur\u00ebs x86 \u00ebsht\u00eb shtuar mund\u00ebsia e aplikimit t\u00eb teknologjis\u00eb AMD SEV-ES (Virtualizimi i Sigurt t\u00eb Kriptuar) p\u00ebr kriptimin e regjistrave t\u00eb procesorit t\u00eb p\u00ebrdorur n\u00eb sistemin mik, q\u00eb e b\u00ebn p\u00ebrmbajtjen e regjistrave t\u00eb paprekshme p\u00ebr ambientin host, n\u00ebse sistemi mik nuk ofron qasje t\u00eb qart\u00eb n\u00eb to.\n
N\u00eb gjeneratorin klasik t\u00eb kodit TCG (Tiny Code Generator) gjat\u00eb emulimit t\u00eb sistemeve x86 \u00ebsht\u00eb implementuar mb\u00ebshtetje p\u00ebr mekanizmin PKS (\u00c7el\u00ebsat e Mbrojtjes t\u00eb Supervisorit), i cili mund t\u00eb p\u00ebrdoret p\u00ebr mbrojtjen e aksesit n\u00eb faqet e privilegjuara t\u00eb memories.\n
N\u00eb emulatorin e arkitektur\u00ebs MIPS \u00ebsht\u00eb shtuar nj\u00eb tip i ri i makinave t\u00eb emuluara «virt» me mb\u00ebshtetje p\u00ebr procesor\u00ebt kineze Loongson-3.\n
N\u00eb emulatorin e arkitektur\u00ebs PowerPC p\u00ebr makinat e emuluara «powernv» \u00ebsht\u00eb shtuar mb\u00ebshtetje p\u00ebr kontrollet e jashtme BMC. P\u00ebr makinat e emuluara pseries \u00ebsht\u00eb siguruar informacion p\u00ebr d\u00ebshtimet gjat\u00eb p\u00ebrpjekjes p\u00ebr t\u00eb nxjerr\u00eb nxeht\u00ebsisht memorjen dhe CPU-n\u00eb.\n
\u00cbsht\u00eb shtuar mb\u00ebshtetje p\u00ebr emulimin e procesor\u00ebve Qualcomm Hexagon me DSP.\n
N\u00eb gjeneratorin klasik t\u00eb kodit TCG (Tiny Code Generator) \u00ebsht\u00eb implementuar mb\u00ebshtetje p\u00ebr ambientet host macOS n\u00eb sistemet me \u00e7ipin e ri ARM Apple M1.\n
N\u00eb emuluesin e arkitektur\u00ebs RISC-V p\u00ebr pllakat Microchip PolarFire \u00ebsht\u00eb implementuar mb\u00ebshtetje p\u00ebr QSPI NOR flash.\n
N\u00eb emuluesin Tricore \u00ebsht\u00eb shtuar mb\u00ebshtetje p\u00ebr modelin e ri t\u00eb pllakatave TriBoard, q\u00eb emulon SoC Infineon TC27x.\n
N\u00eb emuluesin ACPI \u00ebsht\u00eb ofruar mund\u00ebsia e caktimit t\u00eb emrave p\u00ebr adaptuesit rrjetor\u00eb n\u00eb sistemet mik, q\u00eb nuk varen nga rendi i lidhjes n\u00eb autobusin PCI.\n
N\u00eb VNC \u00ebsht\u00eb shtuar mb\u00ebshtetja p\u00ebr transparenc\u00ebn e kursori dhe mb\u00ebshtetja p\u00ebr zmadhimin e rezolut\u00ebs s\u00eb ekranit n\u00eb virtio-vga, duke u bazuar n\u00eb p\u00ebrmasat e dritares.\n
N\u00eb emulatorin USB \u00ebsht\u00eb shtuar mund\u00ebsia p\u00ebr t\u00eb ruajtur trafikun q\u00eb shkaktohet gjat\u00eb pun\u00ebs me pajisjet USB n\u00eb nj\u00eb skedar pcap t\u00eb ve\u00e7ant\u00eb p\u00ebr inspektim t\u00eb m\u00ebvonsh\u00ebm n\u00eb Wireshark.\n
Jan\u00eb shtuar komanda t\u00eb reja QMP load-snapshot, save-snapshot dhe delete-snapshot p\u00ebr menaxhimin e snapshot-eve qcow2.\n
N\u00eb virtiofs jan\u00eb eliminuar vulnerabilitetet CVE-2020-35517 dhe CVE-2021-20263. Problemi i par\u00eb lejon aksesin n\u00eb ambientin e host-it nga sistemi mysafir p\u00ebrmes krijimit nga nj\u00eb p\u00ebrdorues me privilegje n\u00eb sistemin mysafir t\u00eb nj\u00eb skedi t\u00eb ve\u00e7ant\u00eb n\u00eb nj\u00eb katalog q\u00eb ndahen me ambientin host. Problemi i dyt\u00eb \u00ebsht\u00eb shkaktuar nga nj\u00eb gabim n\u00eb procesimin e atributeve t\u00eb avancuara n\u00eb opsionin ‘xattrmap’ dhe mund t\u00eb \u00e7oj\u00eb n\u00eb injorimin e rikthimit t\u00eb t\u00eb drejtave t\u00eb shkruajtjes dhe rritjes s\u00eb privilegjeve brenda sistemit mysafir. <\/ul>\n