{"id":111676,"date":"2023-11-21T15:10:42","date_gmt":"2023-11-21T13:10:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/vypusk-gipervizora-xen-4-18"},"modified":"2023-11-21T15:10:42","modified_gmt":"2023-11-21T13:10:42","slug":"vypusk-gipervizora-xen-4-18","status":"publish","type":"post","link":"https:\/\/prohoster.info\/sq\/blog\/news\/vypusk-gipervizora-xen-4-18","title":{"rendered":"Lan\u00e7imi i hipervizorit Xen 4.18","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"
Pas pas 11 muajsh zhvillimi, \u00ebsht\u00eb publikuar l\u00ebshimi i hipervizorit t\u00eb lir\u00eb Xen 4.18. N\u00eb zhvillimin e k\u00ebsaj versioni mor\u00ebn pjes\u00eb kompani si Amazon, Arm, Bitdefender, Citrix, EPAM Systems dhe AMD. Formimi i p\u00ebrdit\u00ebsimeve p\u00ebr deg\u00ebn Xen 4.18 do t\u00eb vazhdoj\u00eb deri m\u00eb 16 maj 2025, nd\u00ebrsa publikimi i rregullimeve t\u00eb dob\u00ebsive deri m\u00eb 16 n\u00ebntor 2026. <\/p>\n
Ndryshimet kryesore n\u00eb Xen 4.18: <\/p>\n
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Jan\u00eb shtuar implementime fillestare t\u00eb porteve p\u00ebr arkitekturat RISC-V dhe Power (ppc64le). Jan\u00eb zhvilluar mjedise p\u00ebr testimin e porteve RISC-V dhe Power n\u00eb sistemin e integrimit t\u00eb vazhduesh\u00ebm GitLab CI.\n
N\u00eb pun\u00ebn n\u00eb sistemet ARM64, n\u00eb n\u00ebn-sistemin e memories s\u00eb Xen jan\u00eb marr\u00eb parasysh karakteristikat e arkitektur\u00ebs ARM. \u00cbsht\u00eb shtuar mb\u00ebshtetje eksperimentale p\u00ebr instruksionet vektoriale SVE (Scalable Vector Extension). \u00cbsht\u00eb shtuar mjeti Arm Firmware Framework p\u00ebr arkitektur\u00ebn ARM A-profile (ARM Application-profile, FF-A). \u00cbsht\u00eb shtuar mund\u00ebsia eksperimentale p\u00ebr shtimin dhe fshirjen dinamike t\u00eb nyjeve n\u00eb pem\u00ebn e pajisjeve t\u00eb Xen p\u00ebrmes skedave .dtbo.\n
N\u00eb sistemet me procesor\u00eb Intel, parametri MSR_ARCH_CAPS tani \u00ebsht\u00eb i duksh\u00ebm n\u00eb sistemet mysafir dhe mund t\u00eb konfigurohet p\u00ebrmes sked\u00ebs s\u00eb konfigurimit t\u00eb makin\u00ebs virtuale. N\u00eb procesor\u00ebt e l\u00ebshuar q\u00eb nga viti 2019, parametri MSR_ARCH_CAPS lejon t\u00eb kuptohet se cilat jan\u00eb zbatuar rregullimet harduerike p\u00ebr dob\u00ebsi t\u00eb lidhura me ekzekutimin spekulativ t\u00eb operacioneve.\n
\u00cbsht\u00eb shtuar mb\u00ebshtetje p\u00ebr zgjatimin CPUID_USER_DIS (CPUID Faulting), i shtuar n\u00eb brezin e kat\u00ebrt t\u00eb procesor\u00ebve AMD EPYC p\u00ebr t\u00eb menaxhuar mund\u00ebsin\u00eb e shikimit t\u00eb t\u00eb dh\u00ebnave CPUID nga nj\u00eb sistem mysafir me paravirtualizim.\n
P\u00ebr sistemet mysafir n\u00eb modin HVM dhe PVH \u00ebsht\u00eb shtuar mb\u00ebshtetje p\u00ebr mekanizmin PKS (Protection Key Supervisor), i cili zgjerohet mund\u00ebsit\u00eb p\u00ebr mbrojtjen e faqeve t\u00eb memories.\n
P\u00ebr t\u00eb parandaluar ndalimin e gjith\u00eb sistemit n\u00eb rast problemeve me bllokimet mikroarkitektonike, \u00ebsht\u00eb angazhuar mekanizmi VM-Notify.\n
\u00cbsht\u00eb shtuar mbrojtja nga ndalimi i shiritit p\u00ebr shkak t\u00eb p\u00ebrdorimit jo t\u00eb duhur t\u00eb instruksioneve atomike n\u00eb sistemin mysafir (\u00ebsht\u00eb aktivizuar rate-limit). <\/ul>\n
\u00cbsht\u00eb shtuar mb\u00ebshtetje p\u00ebr instruksionet AVX512-FP16, t\u00eb cilat jan\u00eb shfaqur n\u00eb CPU Intel t\u00eb bazuar n\u00eb mikroarkitektur\u00ebn Granite Rapids.\n
\u00cbsht\u00eb shtuar driveri cpufreq, i cili p\u00ebrdor mekanizmin HWP (Hardware P-States) p\u00ebr t\u00eb menaxhuar konsumimin e energjis\u00eb dhe frekuenc\u00ebn e procesor\u00ebve Intel.\n
\u00cbsht\u00eb realizuar mb\u00ebshtetje p\u00ebr ekzekutimin e detyruesh\u00ebm t\u00eb operacioneve sistemore n\u00eb modin DOITM (Data Operand Independent Timing Mode), duke siguruar nj\u00eb koh\u00eb t\u00eb q\u00ebndrueshme ekzekutimi p\u00ebr instruksionet, e cila nuk varet nga t\u00eb dh\u00ebnat e p\u00ebrpunuara n\u00eb k\u00ebto instruksione.\n
\u00cbsht\u00eb vazhduar implementimi i k\u00ebrkesave p\u00ebr zhvillimin e programeve t\u00eb sigurta dhe t\u00eb besueshme n\u00eb gjuh\u00ebn C, t\u00eb formulura n\u00eb specifikimet MISRA-C p\u00ebr sisteme kritike. Numri i drejtp\u00ebrdrejtiveve MISRA-C t\u00eb inkuadruara n\u00eb Xen \u00ebsht\u00eb rritur nga 4 n\u00eb 6, nd\u00ebrsa rregullat nga 24 n\u00eb 65 (n\u00eb total, specifikimi ka 16 drejtp\u00ebrdrejtiva dhe 143 rregulla).\n
Jan\u00eb shtuar dy hipervizor\u00eb t\u00eb rinj p\u00ebr lidhjen e gjendjes s\u00eb pun\u00ebs dhe fushave t\u00eb p\u00ebrkohshme t\u00eb vCPU-s\u00eb me adresat fizike, jo me ato virtuale. <\/ul>\n