> --- Ursprüngliche Nachricht --- > Von: Benjamin Herrenschmidt <[EMAIL PROTECTED]> > An: Gerhard Pircher <[EMAIL PROTECTED]> > Kopie: [EMAIL PROTECTED], debian-powerpc@lists.debian.org > Betreff: Re: Unmapping pages from the linear addressing > without HIGHMEM support > Datum: Sat, 11 Mar 2006 10:13:30 +1100 > > > That would mean I cannot reuse the code in dma-mapping.c, right? > > Killing the BAT mappings or limiting the memory size covered by the > > BATs seems to be fairly easy, but I guess I have to setup my own page > > table for the reserved DMA memory area and implement my own > > alloc_pages() function!? > > No, just limit the size of the BAT mapping and mark some of the top > pages of the address space reserved... That should be enough. > Okay, I will try that first. Marking some of the pages as reserved sounds like the code you implemented for the uninorth_agp driver with this "agp_special_page". I guess I still have to modify the code in dma_mapping.c to use the reserved address space for the consistent memory allocation (CONSISTENT_BASE, CONSISTENT_END)?
Thanks again! Gerhard -- "Feel free" mit GMX FreeMail! Monat für Monat 10 FreeSMS inklusive! http://www.gmx.net -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]
