On Thu, May 07, May 10, 2012 3:59 AM, Jiang Liu <liuj97@xxxxxxxxx> wrote: > >Hi Maciej, > I feel we may also need to tune the multiple IOH support in DCA. >Multiple IOH support is disabled for CB3.0 devices, how about CB3.1 devices >in Ivrbridge or SandyBridge? Does the hardware limitation still exist? Or >could we support multiple IOHs with IvyBridge and SandyBridge? > If multiple IOH is supported, I think we should move the logic to >disable multiple IOH support for CB3.0 from DCA core into ioatdma. I have >also prepared two patches for that two. > Thanks! > At this point I do not think we would need to tune multiple IOH for DCA. The limitation you mention applies only to CB3.0. I do not think DCA is supported with Sandy Bridge / Ivy Bridge regardless of multi-IOH case but let me confirm it yet. Thanks, Maciej -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
