Hauv kev suav, ib qho kev tawm tswv yim-tsim kev tswj hwm lub cim xeeb yog chav tswj kev nco uas txuas ncaj qha-nco-nkag mus-muaj peev xwm I / O tsheb npav mus rau lub cim xeeb loj. Zoo li ib txwm MMU, uas txhais CPU-pom virtual chaw nyob rau lub cev chaw nyob, IOMMU maps cov cuab yeej pom virtual chaw nyob rau lub cev chaw nyob.
IOMMU vmware yog dab tsi?
3) I/O MMU virtualization kuj hu ua Intel Virtualization Technology rau Qhia I/O (VT-d) thiab AMD I/O Virtualization (AMD-Vi lossis IOMMU) tso cai rau cov tshuab virtual kom muaj kev nkag ncaj qha rau cov khoom siv kho vajtse I/O, xws li daim npav network, cov tswj hwm cia (HBAs), thiab GPUs.
MMU ua dab tsi?
Ib lub cim xeeb tswj (MMU), qee zaum hu ua paged memory management unit (PMMU), yog khoos phis tawj kho vajtse uas muaj tag nrho cov ntaub ntawv nco tau dhau los ntawm nws tus kheej, feem ntau ua qhov kev txhais lus ntawm virtual nco chaw nyob rau lub cev chaw nyob.
Vim li cas cov khoom siv tawm tswv yim xav tau ib qho MMU cais?
Cov cheeb tsam loj ntawm lub cim xeeb tuaj yeem faib tsis tas yuav tsum tau sib txuas hauv lub cev nco - IOMMU daim ntawv qhia chaw nyob sib txuas mus rau qhov chaw nyob hauv lub cev tawg. … Yog tsis muaj IOMMU, lub operating system yuav tsum tau siv sij hawm- siv bounce buffers (tseem hu ua ob npaug buffers).
MMU virtualization yog dab tsi?
Hardware-pab MMU virtualization, hu ua nrawm virtualization indexing (RVI) lossis nested nplooj ntawv (NPT) hauv AMD processors thiab cov nplooj ntawv txuas ntxiv (EPT) hauv Intel processors, hais txog cov nyiaj siv ua haujlwm vim nco chav tswj hwm(MMU) virtualization los ntawm kev muab kev txhawb nqa kho vajtse rau virtualize MMU.
