On 06/07/2015 10:33, Michael S. Tsirkin wrote: > Also, by luck, some values work the same whatever the endian-ness. > E.g. dma_memory_set fills the buffer with a given pattern, so > nothing changes if you byte-swap it. > > Here's an example that's wrong: dp8393x. Typically it's accessing > memory for DMA, so there's no byteswap. Works fine. > > But should device attempt to access another device memory, > it would break because MIPS target is BE. > > Cc Hervé for confirmation. > > I conclude that virtio is not so special in needing a variant > of address_space_rw that assumes host endian format for the data.
Why host endian and not device (in this case little) endian? Paolo
