[coreboot-gerrit] Change in coreboot[master]: arch/{arm,arm64,ppc64,riscv}: Add noop cpu_relax

[Raul Rangel (Code Review)]

Attention is currently required from: Philipp Hug, Julius Werner, Ron Minnich.
Raul Rangel has posted comments on this change. ( https://review.coreboot.org/c/coreboot/+/59546 )

Change subject: arch/{arm,arm64,ppc64,riscv}: Add noop cpu_relax
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Patch Set 2:

(2 comments)

File src/arch/arm/include/armv4/arch/cpu.h:

https://review.coreboot.org/c/coreboot/+/59546/comment/f33eda28_1c21c416 
PS1, Line 6: __always_inline
> Just `inline` is enough. __always_inline is weird and shouldn't be used without good reason.

Done. I had copy/pasted it from x86.

File src/arch/arm64/include/armv8/arch/cpu.h:

https://review.coreboot.org/c/coreboot/+/59546/comment/5f211cd6_e56de44d 
PS1, Line 6: static __always_inline void cpu_relax(void) { }
> Maybe add a TODO comment that this should be implement via SEV/WFE if it's ever actually used?

Done