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 <ckim@xxxxxxxxxx> 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
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