Re: [RFC PATCH 2/3] MIPS: io.h use barrier terminology from asm-generic

[Maciej W. Rozycki]

On Mon, 21 Feb 2022, Jiaxun Yang wrote:

> So we can share understanding of those barriers with other archs
> and hopefully one day we will be able to switch asm-generic.

 You're mixing the ordering of DMA WRT MMIO here with the ordering of MMIO 
WRT itself, and this single line of justification does not explain why it 
is a change worth making.  You're free to define additional DMA barriers 
if we're missing some.

  Maciej