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SubjectRe: [RFC 0/4] Virtio uses DMA API for all devices
On Fri, Aug 03, 2018 at 10:17:32PM +0300, Michael S. Tsirkin wrote:
> It seems reasonable to teach a platform to override dma-range
> for a specific device e.g. in case it knows about bugs in ACPI.

A platform will be able override dma-range using the dev->bus_dma_mask
field starting in 4.19. But we'll still need a way how to

a) document in the virtio spec that all bus dma quirks are to be
applied
b) a way to document in a virtio-related spec how the bus handles
dma for Ben's totally fucked up hypervisor. Without that there
is not way we'll get interoperable implementations.

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