Linus Benedict Torvalds injiniyan software ne Ba-Amurke ɗan Finnish, wanda aka sani don farawa da kiyaye haɓakar kernel na Linux.
Kwanan nan yayin da ake tattaunawa akan mafita akan na'urori masu sarrafawa na x86 waɗanda basa goyan baya Umarnin "cmpxchg8b", Linus Torvalds ya bayyana cewa yana iya zama lokaci don sanya wannan bayanin ya zama dole don kernel ya gudana kuma cire goyon baya ga i486 masu sarrafawa waɗanda ba sa goyan bayan "cmpxchg8b", maimakon "koƙarin yin koyi da yadda" wannan umarni ke aiki akan na'urori masu sarrafawa waɗanda "babu wanda ke amfani da shi kuma".
A halin yanzu, kusan dukkanin rarrabawar Linux waɗanda ke ci gaba da tallafawa tsarin x86 32-bit sun canza zuwa haɗa kernel tare da zaɓi na X86_PAE, wanda ke buƙatar tallafin "cmpxchg8b".
A cewar Linus. dangane da tallafi a cikin kwaya, i486 masu sarrafawa sun rasa dacewa, ko da yake har yanzu ana samun su a rayuwar yau da kullum. A wani lokaci, na'urori masu sarrafawa sun zama kayan kayan tarihi, kuma a gare su yana yiwuwa a samu ta hanyar "gidajen kayan tarihi".
Yana da kyau a faɗi cewa idan cire tallafi na ƙimar i486 na al'ada, wannan ba zai shafi na'urori masu sarrafawa na Quark na Intel ba, waɗanda, kodayake suna cikin aji na i486, sun haɗa da ƙarin umarnin kwatankwacin ƙarni na Pentium, gami da "cmpxchg8b".
Bugu da ƙari, an ambaci cewa iri ɗaya ya shafi na'urori masu sarrafawa na Vortex86DX. An yi watsi da tallafi ga masu sarrafa i386 a cikin kwaya shekaru 10 da suka gabata.
Wataƙila mu ciji harsashi mu ce muna goyon bayan x86-32 da 'cmpxchg8b' (watau Pentium da kuma daga baya).
Kawar da duk "koyi da 64-bit atomics tare da cli/sti, sanin babu wanda ke da SMP akan waɗancan CPUs ta wata hanya", kuma aiwatar da saitin x86-32 xchg () gama gari ta amfani da madauki try_cmpxchg64.
Ina tsammanin yawancin (duk?) Rarraba sun riga sun ba da damar X86_PAE ta wata hanya, wanda ya sanya X86_CMPXCHG64 wani ɓangare na buƙatun tushe.
Ba wai na gamsu da cewa mafi yawan rabawa har ma suna yin ci gaban 32-bit kwanakin nan.
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Mun kawar da goyon bayan i386 a cikin 2012. Wataƙila lokaci ya yi da za a sauke tallafin i486 a 2022?
Ƙarshen goyon baya ga i486 na iya zama wani muhimmin abin da za a yi la'akari da shi, tun da ba da daɗewa ba rarrabawar Linux daban-daban sun zaɓi kawar da goyon baya ga masu sarrafawa na 32-bit, wanda ba shi da sakamakon da yawa da ake tsammani. Tun da haka a, har yanzu akwai dubban masu amfani waɗanda ke da ƙananan kwamfutoci masu ƙarancin albarkatu, waɗanda suka sanya Linux kyakkyawan zaɓi don ci gaba da amfani da su, musamman a yawancin wuraren da aka ware.
Kuma ko da yake ana ci gaba da bayar da tallafi ga irin wannan kayan aiki ta hanyar babban rabon, buƙatun su na yanzu ya sa yin amfani da su ba zai yiwu ba. Gaskiyar ita ce, har yanzu akwai wasu rarrabawa waɗanda ke ci gaba da tallafawa wannan gine-gine kuma, fiye da duka, waɗanda aka inganta don amfani da ƙananan kwamfutoci.
Game da batun ƙarshen tallafi, an ambaci cewa masu amfani waɗanda ke da tsarin tare da na'urori masu sarrafawa na i486 za su iya amfani da nau'ikan LTS na kernelwanda zai dauki shekaru masu yawa masu zuwa.
A daya bangaren kuma, yana da kyau a ambaci hakan mai haɓaka direba na Linux bude hanya don Apple AGX GPU da aka yi amfani da su a cikin kwakwalwan Apple M1 sun ruwaito cewa cikin nasara ya ci kashi 99,3% na gwajin suite dEQP-GLES2, wanda ke tabbatar da matakin tallafi don ƙayyadaddun OpenGL ES 2. An yi amfani da abubuwa biyu a cikin aikin: direban DRM na Linux kernel, wanda aka rubuta a cikin Rust, da kuma direban Mesa da aka rubuta a C.
Ci gaban na masu kula yana da rikitarwa ta gaskiyar cewa Apple M1 yana amfani da nasa GPU, wanda Apple ya ƙirƙira, yana gudanar da firmware na mallakar mallaka kuma yana amfani da tsayayyen tsarin bayanan da aka raba. Babu takaddun fasaha don GPU, kuma haɓaka direba mai zaman kansa yana amfani da injin juzu'i na direbobin macOS.
Mai sarrafawa bude hanya An haɓaka don Mesa da farko a cikin yanayin macOS har sai an shirya direban DRM (Direct Rendering Manager) da ake buƙata don kernel Linux, wanda ya ba da damar direban da aka haɓaka don Mesa a yi amfani da shi akan Linux.
Baya ga nasarar da aka samu a halin yanzu na ƙaddamar da gwajin dEQP-GLES2, a ƙarshen Satumba direban Linux na Apple M1 chips ya kai matakin da ya dace don gudanar da zaman GNOME na tushen Wayland da gudanar da wasan Neverball da YouTube a cikin Firefox browser.
Finalmente idan kuna sha'awar ƙarin sani game da shi, zaku iya bincika cikakkun bayanai a cikin bin hanyar haɗi.