>> port-arm32/12155[open change-request] Add libarch support for flushing the 
>> read buffer
>> Submit?

>I thought the patch was in the PR.  If not, I'm fairly sure it was posted 
>to this list.  We need to ensure that such a call only tries to issue the 
>CP15 instruction on processors that have that feature.

It just calls cpufunc_nullop() if it isn't supported.

The patch won't apply as is since it pre dates moving stuff to arch/arm.

I can regenerate the patch it if it helps.

Robert