On Thu, Apr 21, 2022 at 09:36:46AM +0200, Arnd Bergmann wrote:

Does this work on all 32-bit architectures as well? I see that you added
swiotlb for ARM LPASE systems in 2019, but I don't know if that has any
additional requirements for the other 32-bit architectures that don't
select SWIOTLB today.

We'll need to call swiotlb_init for all these cases, but there is no other
fundamental requirement.  We can probably do with a way smaller buffer
if bouncing is only needed for misaligned allocations.

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