On Wed, Nov 13, 2019 at 8:27 AM Christoph Hellwig <hch@xxxxxx> wrote: > > On Tue, Nov 12, 2019 at 10:24:23PM +0000, Luis Chamberlain wrote: > > I think this would be possible if we could flop ioremap_nocache() to UC > > instead of UC- on x86. Otherwise, I can't see how we can remove this by > > still not allowing direct MTRR calls. > > If everything goes well ioremap_nocache will be gone as of 5.5. As ioremap_nocache() just an alias for ioremap(), I suppose the idea would then be to make x86 ioremap be UC instead of UC-, again matching what the other architectures do already. Arnd