What my understanding is that ioremap converts your address to a virtual address. So, yes everything then is handled by the kernel
On Sun, Jul 11, 2021 at 9:04 PM <[email protected]> wrote: > Hello all, > > I’m almost sure but want to check if my understanding is correct. > > To use a memory mapped IO, we use functions like request_mem_region and > ioremap, iounmap functions. > > I guess when we call ioremap function, the kernel sets up page table for > the region so that the region becomes non-cacheable, and I don’t also have > to worry about reordering problem. > > Is my understanding correct? > > Thanks! > > Chan Kim > _______________________________________________ > Kernelnewbies mailing list > [email protected] > https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies >
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