Kana dzikashandiswa, zvikanganiso izvi zvinogona kubvumira vanorwisa kuti vawane mukana usina mvumo kune ruzivo rwakadzama kana kuti kazhinji kukonzera matambudziko.
Mazuva mashoma apfuura nhau dzakaziviswa kuti ndizvo vakaona kusagadzikana kunokanganisa zvose processors AMD ine Zen1 microarchitecture, pamwe chete neshanduro dzose dze Xen hypervisor (yakatonyorwa pasi peCVE-2023-20588), izvo zvinokonzeresa kuvuza kwedata rinoshandiswa panguva yekushanda pane imwechete CPU musimboti apo processor inobata iyo #DE (Divide Error) iyo inoitika kana uchiedza kupatsanura ne zero.
Zvinotaurwa kuti kubva pakuona kwekuita, kusagadzikana inogona kushandiswa kuronga yakavanzika chiteshi chekufambisa data pakati pemaitiro, nharaunda dzebhokisi rejecha kana mashini chaiwo, achibvumira kuchinjana kwedata pasina kuenda kuburikidza nehurongwa hwekuwana kudzora nzira uye pasina kushandisa kufona system.
Kunetseka zvakare inobvumira nzvimbo yemushandisi kuona mhedzisiro yekuurayiwa chaiko kana kwekufungidzira yedzidziso yeDIV, iyo inogona kushandiswa pakugadziridza data rakavanzika padanho repamusoro (semuenzaniso, kupatsanura kunogona kushandiswa pakuita cryptographic mashandiro uye anorwisa anogona kuona maparamita emabasa aya).
Nezve dambudziko, kunotaurwa kuti kusagadzikana Imhaka yekuti kana #DE kusarudzika kuchiitika kana kupatsanurwa ne zero, iyo processor inofungidzira inotungamira mhedzisiro yeakamboita kupatsanurwa oparesheni, sezvo muCPU ine Zen1 microarchitecture muine chete splitter mukuita, ichishandira mashandiro mushinda dzakasiyana.
Pane masisitimu anotambura, anorwisa anogona kuona mhedzisiro yeakambopatsanurwa oparesheni, kusanganisira ayo akaitwa pane imwechete CPU musimboti mune mamwe mamiriro, semuenzaniso, mu kernel, mune mamwe maitiro, kana kunze kweiyo chaiyo muchina.
Izvo zvinotaurwa kuti ese mavhezheni eXen ari panjodzi yekukanganisa uku uye pamwe nekugoverwa kweLinux kwakasiyana, seUbuntu, Debian, Amazon Linux 2, Fedora, SUSE, Oracle. Uye zvakare, sezvatotaurwa, kusazvibata kunongoonekwa mu AMD processors zvichibva paZen1 microarchitecture, semuenzaniso, mu AMD EPYC 7001, AMD Athlon 3000, AMD Ryzen 3000 ine Radeon GPU, AMD Athlon PRO 3000 ine Radeon Vega GPU uye AMD. Ryzen PRO 3000 ine Radeon Vega akatevedzana maGPU.
Kana zvakadaro mhinduro yedambudziko yakatoburitswa kuburikidza nezvigamba zvekuvhara njodzi yeLinux kernel uye Xen hypervisor. Iwo mapeche akapihwa Xen anonyora pamusoro buffer pane inoparadzanisa munzira yekudzokera kumuenzi uye zvakanyanya nyaya yakagadziriswa nekudzoreredza iyo splitter buffer panguva yekuchinja mamiriro. Kugadzirisa kunoshanda chete kana Symmetric Multithreading (SMT) yakadzimwa.
Nekudaro, sezvimwe zvakamboitika zvekufungidzira kusasimba, mhinduro ndeye chete
inoshanda pamwe chete neSMT deactivation. Nezvikonzero zvakafanana sepakutanga, Xen haidzimi SMT nekukasira.
Pamusoro pezvo, zvinonzi vatariri vehurongwa vanofanirwa kuongorora njodzi yebasa ravo, sezvo vachifanira kusarudza kugonesa kana kudzima SMT. Xen ichapa yambiro kana SMT ichishanda uye mushandisi asina kupa sarudzo yakajeka kuburikidza ne smt= command line sarudzo.
Kana iwe uchifarira kuwana rumwe ruzivo, unogona kubvunza ruzivo mu inotevera chinongedzo.
Panguva ye kufarira kuronda kururamiswa yekusagadzikana, unogona kuzviita pamapeji ekugoverwa kwakasiyana: amazon linux, Debian, Ubuntu, RHEL y SUSE/openSUSE.
Chekupedzisira uye senguva dzose, kunyangwe kuomarara kwekusagadzikana kwakaiswa se "pasi", kurudziro inoitwa kune vashandisi veakakanganisika masisitimu uye / kana Hardware, vanoita izvo zvinoenderana (kana zvichibvira). Kunyangwe muzviitiko zvakawanda kana mapundu ekuchengetedza achizivikanwa, vagadziri vanofanirwa kuzvigadzirisa nekukurumidza nekugadzira chigamba kana imwe mhinduro uye izvi zvinopihwa kuburikidza nehurongwa hwekuvandudza, nekudaro kurudziro yekuvandudza uye kugara iine zvigadziriso zvakaitwa.