On Mon, 1 May 2006, Stefan Richter wrote: > Arjan van de Ven wrote: > > On Sun, 2006-04-30 at 16:52 +0200, Stefan Richter wrote: > > > is there a *direct* future-proof replacement for bus_to_virt()? > > > > > > It appears there are already architectures which do not define a > > > bus_to_virt() funtion or macro. If there isn't a direct replacement, is > > > there at least a way to detect at compile time whether bus_to_virt() > > > exists? > > > > > > I'd go one step further: given a world with iommu's, and multiple pci > > domains etc, how can you know there even IS such a translation possible > > (without first having set it up from the other direction)? > > Well, we actually do set it up from the other direction. But in a way that > does not work with IOMMUs... > > AFAIU, the patch "dc395x: dynamically map scatter-gather for PIO" [1] by > Guennadi Liakhovetski is dealing with the same issue. I am not yet clear > whether I could adopt this method for sbp2. > [1] http://marc.theaimsgroup.com/?l=linux-scsi&t=114400790300004 I would be, obviously, interested to hear any results with that one. Thanks Guennadi --- Guennadi Liakhovetski - : send the line "unsubscribe linux-scsi" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
