Re: [PATCH] trim memory not covered by WB MTRRs

[Jesse Barnes]

On Friday, June 8, 2007 4:13:22 Eric W. Biederman wrote:
> Jesse Barnes <jesse.barnes@xxxxxxxxx> writes:
> >> - Overlapping MTRRs.
> >
> > Overlapping should be ok, since that's usually intentional (e.g.
> > one big wb range with a portion of uc space due to another mtrr).
>
> I'm not say overlapping was a bug.  I was saying that you don't
> handle overlapping mtrrs in figuring the last cached addresses. 
> Therefore when a UC range overlaps a WB range we might thing the last
> page in the WB range is cached when it is not.

Oh right, that might be an issue, but we haven't seen it yet...

Jesse
-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/