Hello, On 03/12/2010 09:08 AM, Robert Hancock wrote: > On 03/10/2010 08:40 PM, Tejun Heo wrote: >> It turns out different generations of MCPs have differing quirks. >> >> * MCP 65-73 : FPDMA AA broken, lies about PMP support, forgets to >> report NCQ >> * MCP 77-79 : FPDMA AA broken, lies about PMP support >> * MCP 89 : FPDMA AA broken >> >> Instead of turngin off FPDMA AA on all NVIDIAs, implement >> HFLAG_NO_FPDMA_AA, define additional board IDs and apply necessary >> quirks. >> >> This fixes bko#15481 and the list of quirks is verified by Peer Chen. >> >> http://bugzilla.kernel.org/show_bug.cgi?id=15481 >> >> Signed-off-by: Tejun Heo<tj@xxxxxxxxxx> >> Cc: Peer Chen<pchen@xxxxxxxxxx> > > Is the FPDMA AA problem going to be fixed in whatever follows MCP89? > This change is only safe if it will be, since a new chipset will fall > into the generic case and it'll get turned back on. Yeap, it would be great if NVIDIA fixes it but that said blacklisting by default usually isn't a very good idea because it often falls through the crack and after a while not many people remember what happened when. If NVIDIA doesn't fix the next revision, we'll know soon enough. Thanks. -- tejun -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
