+ linux-arch
For background, see
https://lore.kernel.org/lkml/2e80d7bc-32a0-cc40-00a9-8a383a1966c2@xxxxxxxxxx/
So today only ARM64 uses it for this relevant code, above. But maybe
others in future will want to use it - any arch without native IO port
access is a candidate.
I'm looking at Arnd here for help.
As long as the expectations are set, I see no reason why it shouldn't
but, I'll let Arnd comment on it too.
ok, so it looks reasonable consider replicating your change for ***, above.
To be clear, I would make this change in lib/logic_pio.c since
__io_pbr() can be overridden per-arch:
#define BUILD_LOGIC_IO(bw, type)
type logic_in##bw(unsigned long addr)
{
type ret = (type)~0;
if (addr < MMIO_UPPER_LIMIT) {
- ret = read##bw(PCI_IOBASE + addr);
+ __io_pbr();
+ ret = __raw_read##bw(PCI_IOBASE + addr);
+ __io_pbr();
} else if (addr >= MMIO_UPPER_LIMIT && addr < IO_SPACE_LIMIT) {
struct logic_pio_hwaddr *entry = find_io_range(addr);
...
(forgetting leX_to_cpu for the moment)
Arnd is the maintainer here. We should consult first.
ok, fine.
I believe there is also a linux-arch mailing list. Going there with this
question makes sense IMO.
Cheers,
John
