> I'm actually writing support for the PAT as we speak. I already have
> working code for PAT setup. Just having a parameter for ioremap is not
> enough, unfortunately. According to the Intel Architecture Software
> Developer's Manual we have to remove all mappings of the page that are
> cached.
For our specific purposes, that's not important. We already flush the cache
before we create uncached regions (via ioremap_nocache). I understand that as a
general Linux feature, you can't ignore cache incoherency, but I don't think
it's a hard requirement.
-- Timur Tabi - ttabi@interactivesi.com Interactive Silicon - http://www.interactivesi.comWhen replying to a mailing-list message, please direct the reply to the mailing list only. Don't send another copy to me. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org Please read the FAQ at http://www.tux.org/lkml/