> From: Jacob Pan
> Sent: Sunday, February 28, 2021 6:01 AM
>
> I/O Address Space ID (IOASID) core code was introduced in v5.5 as a generic
> kernel allocator service for both PCIe Process Address Space ID (PASID) and
> ARM SMMU's Substream ID. IOASIDs are used to associate DMA requests
> with
>
I/O Address Space ID (IOASID) core code was introduced in v5.5 as a generic
kernel allocator service for both PCIe Process Address Space ID (PASID) and
ARM SMMU's Substream ID. IOASIDs are used to associate DMA requests with
virtual address spaces, including both host and guest.
In addition to
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