Re: User applications

[Ralf Baechle <ralf@oss.sgi.com>]

On Mon, Jan 08, 2001 at 04:40:06PM +0100, Maciej W. Rozycki wrote:

> > than flushing the caches - so long as by "flush" we mean invalidate
> > with writeback (on copyback caches), of course.
> 
>  What's wrong with cacheflush(addr, count, which) that actually checks if
> <addr; addr+count> lies within the caller's address space before
> performing the flush and returns -EPERM otherwise?  It would make the
> caller crawl like a turtle if it wished to but it would leave other
> processes alone. 

cacheflush(2) actually is supposed to handle things that way.

  Ralf