Re: [rfc] generic allocator and mspec driver

Robin Holt
2005-02-15T20:24:14Z

On Tue, Feb 15, 2005 at 03:02:01PM -0500, Jes Sorensen wrote:
> >>>>> "Robin" = Robin Holt <holt@sgi.com> writes:
>
> Robin> Would anybody have a concern with marking those cache lines as
> Robin> processor uncached only? Would there ever be a time that we
> Robin> would expect _ANY_ type of cached reference when the granule is
> Robin> being used for uncached that would be an acceptable use?
>
> Robin,
>
> I don't see any valid such cases. In principle one has to go through
> the reverse procedure to convert something from uncached to cached and
> since we don't do that in any place I don't see any valid reason to do
> so. Anyone doing it in kdb etc. would be in for what they are getting,
> so I don't think thats valid concern.

I guess I didn't follow you. Are you saying you would have no concern
with changing the memory protections to prevent that type of reference?

Thanks,
Robin