Re: Empty function at BaseCacheMaintenanceLib

[Rafael Machado <rafaelrodrigues.machado@gmail.com>]

Got it!

Thanks for the answer Andrew.

Rafael Machado

Em ter, 8 de mai de 2018 às 12:55, Andrew Fish <afish@apple.com> escreveu:

> Rafael,
>
> I seem to remember those functions are used to manage the cache on a
> Harvard architecture caches  [1].
>
> If you look at InvalidateInstructionCacheRange() you will notice it is
> used when code gets loaded into memory to keep the data and instruction
> caches coherent. If the instruction cache maintains coherency in hardware
> then there is no need for this functions to do anything.
>
> If you notice the IPF version actually does something, and that is why
> these functions exists.
>
> [1]  https://en.wikipedia.org/wiki/Harvard_architecture
>
> Thanks,
>
> Andrew Fish
>
> On May 8, 2018, at 6:46 AM, Rafael Machado <
> rafaelrodrigues.machado@gmail.com> wrote:
>
> Hi everyone
>
> I have a question. During a research I got to the BaseCacheMaintenanceLib,
> and noticed that there is a function that is not implemented.
>
> The function InvalidateInstructionCache does not have a body, but as far as
> I
> could check it's used in some places.
>
> Is it ok to have this function empty?
>
> Thanks and Regards
> Rafael R. Machado
>
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