On 12/14/2010 08:35 PM, Len Brown wrote: > > I'm not sure the concept of checking against E820 > is better than simply calling ioremap_cache() always. > I don't think it is. On most systems, non-RAM will be forced uncachable by the MTRRs anyway, and if we find systems which have problems, we should be doing this forcing in the PAT subsystem, not in ACPI. -hpa -- H. Peter Anvin, Intel Open Source Technology Center I work for Intel. I don't speak on their behalf. -- To unsubscribe from this list: send the line "unsubscribe linux-acpi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html