I-DMA: kutholakale ubungozi obusha bokuphepha

Ukuduma kwezulu 3 / USB-C

Kutholwe ukuba sengozini okusha I-DMA (Ukufinyelela Kwememori Okuqondile). Lezi zinhlobo zokuhlaselwa kwe-DMA akuyona into entsha, zaziwa iminyaka, kepha manje iqembu labaphenyi bezokuphepha lithole usongo olusha oluthinta izinhlelo ezinkulu zokusebenza: I-GNU / Linux, i-FreeBSD namanye ama-BSD, iMicrosoft Windows ne-Apple macOS. Ukuhlaselwa okusebenzisa lokhu kuba sengozini kungadlula izindlela zokuvikela ezisunguliwe.

Ngokuxhuma i-plug-hot device enekhompyutha, lokhu kuhlasela kungenziwa. Amadivayisi angahluka kakhulu, kusuka ku-adaptha yenethiwekhi ye-USB, igundane, ikhibhodi, i-pendrive noma i-hard drive yangaphandle, ikhadi lemidwebo langaphandle, amaphrinta, njll. Kepha zithinta ngqo itheku I-Thunderbolt 3okungukuthi, ngakho-ke futhi nase I-USB-C esekelwe phezu kwayo. I-Thunderbolt ivumela ama-peripheral axhunywe ngayo ukuthi adlule izinqubomgomo zokuphepha zesistimu yokusebenza nememori yesistimu, ikwazi ukufinyelela kumadivayisi athile nge-DMA. amakheli enkumbulo (funda bese ubhala) okufanele kugcinwe. Kulezo zindawo zememori, kungaba nemininingwane eyimfihlo njengamaphasiwedi agciniwe, imininingwane yasebhange noma yokungena ngemvume yezinye izinsizakalo ezibalulekile, amanani ayimfihlo agcinwe yisiphequluli, njll.

Futhi i-OS isebenzisa iyunithi IOMMU (I-O unit management management unit) ukuvimba okunye ukuhlaselwa kwe-DMA kwangaphambilini ngokuvimbela amadivayisi asemthethweni wokungena ezindaweni ezithile zememori futhi abavumele kuphela ukuthi bakwazi ukufinyelela kokufanele. Esikhundleni salokho, isitaki esibizwa ngeThunderclap singakhohlisa lokhu kuvikela futhi sikudlule ngezinhloso ezingekho emthethweni.


Shiya umbono wakho

Ikheli lakho le ngeke ishicilelwe. Ezidingekayo ibhalwe nge *

*

*

  1. Unomthwalo wemfanelo ngedatha: AB Internet Networks 2008 SL
  2. Inhloso yedatha: Lawula Ugaxekile, ukuphathwa kwamazwana.
  3. Ukusemthethweni: Imvume yakho
  4. Ukuxhumana kwemininingwane: Imininingwane ngeke idluliselwe kubantu besithathu ngaphandle kwesibopho esisemthethweni.
  5. Isitoreji sedatha: Idatabase ebanjwe yi-Occentus Networks (EU)
  6. Amalungelo: Nganoma yisiphi isikhathi ungakhawulela, uthole futhi ususe imininingwane yakho.