{"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\/novosti-interneta\/vypusk-gipervizora-xen-4-18","title":{"rendered":"L\u00ebshimi i hipervizorit Xen 4.18","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"
Pas 11 muajsh zhvillimi, u publikua l\u00ebshimi i hipervizorit t\u00eb lir\u00eb Xen 4.18. N\u00eb zhvillimin e l\u00ebshimit t\u00eb ri 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 p\u00ebr dob\u00ebsit\u00eb do t\u00eb vazhdoj\u00eb deri m\u00eb 16 n\u00ebntor 2026. <\/p>\n
Ndryshimet kryesore n\u00eb Xen 4.18: <\/p>\n
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Shtohen implementimet fillestare t\u00eb porteve p\u00ebr arkitekturat RISC-V dhe Power (ppc64le). Ambientet p\u00ebr testimin e porteve RISC-V dhe Power jan\u00eb vendosur n\u00eb sistemin e integrimit t\u00eb vazhduesh\u00ebm GitLab CI.\n
Kur punoni n\u00eb sisteme ARM64, n\u00eb n\u00ebndeg\u00ebn e memories s\u00eb Xen jan\u00eb marr\u00eb parasysh karakteristikat e arkitektur\u00ebs ARM. Shtohet mb\u00ebshtetje eksperimentale p\u00ebr instruksionet vektoriale SVE (Scalable Vector Extension). Shtohet mjet p\u00ebr Arm Firmware Framework p\u00ebr arkitektur\u00ebn ARM A-profile (ARM Application-profile, FF-A). Shtohet nj\u00eb mund\u00ebsi eksperimentale p\u00ebr shtimin dhe heqjen dinamike t\u00eb nyjave n\u00eb pem\u00ebn e pajisjeve Xen p\u00ebrmes skedar\u00ebve .dtbo.\n
N\u00eb sistemet me procesor\u00eb Intel, parametri MSR_ARCH_CAPS tani \u00ebsht\u00eb i duksh\u00ebm n\u00eb sistemet mysafire dhe mund t\u00eb konfigurohet p\u00ebrmes skedarit t\u00eb konfigurimit t\u00eb makin\u00ebs virtuale. N\u00eb procesor\u00ebt e l\u00ebshuar q\u00eb nga viti 2019, parametri MSR_ARCH_CAPS tregon se cilat korrigjime harduerike p\u00ebr dob\u00ebsit\u00eb e lidhura me ekzekutimin spekulativ jan\u00eb aplikuar.\n
Shtesa CPUID_USER_DIS (CPUID Faulting) q\u00eb u nj\u00ebhsua n\u00eb brezin e kat\u00ebrt t\u00eb procesor\u00ebve AMD EPYC \u00ebsht\u00eb shtuar p\u00ebr t\u00eb menaxhuar mund\u00ebsin\u00eb e shikimit t\u00eb t\u00eb dh\u00ebnave CPUID nga sistemi mysafir n\u00eb paravirtualizim.\n
P\u00ebr sistemet mysafire n\u00eb modin HVM dhe PVH, \u00ebsht\u00eb shtuar mb\u00ebshtetje p\u00ebr mekanizmin PKS (Protection Key Supervisor), i cili zgjeron mund\u00ebsit\u00eb p\u00ebr mbrojtjen e faqeve t\u00eb memories.\n
P\u00ebr t\u00eb parandaluar q\u00eb t\u00ebr\u00eb sistemi t\u00eb ndaloj\u00eb n\u00eb rast problemesh me bllokimet mikroarkitekturore, \u00ebsht\u00eb aktivizuar mekanizmi VM-Notify.\n
\u00cbsht\u00eb shtuar mbrojtja nga bllokimi i autobusit si rezultat i p\u00ebrdorimit t\u00eb paqen\u00eb t\u00eb instrukcioneve atomike n\u00eb sistemin mysafir (rate-limit \u00ebsht\u00eb aktivizuar). <\/ul>\n
Shtuar drivere cpufreq, q\u00eb p\u00ebrdor mekanizmin HWP (Hardware P-States) p\u00ebr t\u00eb menaxhuar konsumin e energjis\u00eb dhe frekuenc\u00ebn e procesor\u00ebve Intel.\n
Implementuar mb\u00ebshtetje p\u00ebr ekzekutimin e detyrave sistemore n\u00eb modin DOITM (Data Operand Independent Timing Mode), q\u00eb siguron nj\u00eb koh\u00eb t\u00eb q\u00ebndrueshme ekzekutimi t\u00eb instruksioneve, e cila nuk varet nga t\u00eb dh\u00ebnat q\u00eb p\u00ebrpunohen n\u00eb k\u00ebto instruksione.\n
Vazhdon implementimin e k\u00ebrkesave p\u00ebr zhvillimin e programeve t\u00eb sigurta dhe t\u00eb besueshme n\u00eb gjuh\u00ebn C, t\u00eb formuluara n\u00eb specifikimet MISRA-C p\u00ebr sistemet kritikisht t\u00eb r\u00ebnd\u00ebsishme. Numri i direk\u00ebve MISRA-C t\u00eb integruar n\u00eb Xen \u00ebsht\u00eb rritur nga 4 n\u00eb 6, nd\u00ebrsa rregullat nga 24 n\u00eb 65 (n\u00eb total n\u00eb specifikim ka 16 drejtime dhe 143 rregulla).\n
Shtuar dy hiperviza t\u00eb reja p\u00ebr lidhjen e gjendjes punuese dhe zonave t\u00eb p\u00ebrkohshme vCPU me adresat fizike, dhe jo me ato virtuale. <\/ul>\n