[cfe-users] RFC v2: Re: cacheflush.2

[Michael Kerrisk (man-pages) via cfe-users]

i Alex,

On 12/10/20 9:56 PM, Alejandro Colomar (man-pages) wrote:
> Hi all,
> 
> v2:
> 
> [
> NOTES
>        Unless  you  need  the finer grained control that this system
>        call provides, you probably want  to  use  the  GCC  built-in
>        function  __builtin___clear_cache(),  which  provides  a more
>        portable interface:
> 
>            void __builtin___clear_cache(void *begin, void *end);
> ]

This seems a reasonable text to me, but I think it would be helpful
to say a little more precisely what kind of portability we are
talking about here.

Greater ortability across Linux architectures? Greater portability
across platforms supported by GCC (including non-Linux) platforms?
Something else?

Thanks,

Michael


-- 
Michael Kerrisk
Linux man-pages maintainer; http://www.kernel.org/doc/man-pages/
Linux/UNIX System Programming Training: http://man7.org/training/