On 27/06/2022 15:43, Jan Kiszka wrote:
On 27.06.22 15:28, Ralf Ramsauer wrote:
GCC may emit 4x 1 Byte reads in case of our regular mmio_read32
accessor, when used in combination with -Os. Yes, I've seen it.
Define safe handlers to overcome this issue.
The kernel does something similar, right? Worth to point that out then.
Yes, but that's not limited to RISC-V, and there's no particular comment
on that issue in the commit logs in the kernel. Maybe they never
experienced it, as basically all architectures build up their mmio
accessors by using assembly per default.
Ralf
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