From: David Ahern <dsahern@xxxxxxxxx> Date: Wed, 04 Mar 2015 12:32:32 -0700 > On 3/4/15 12:15 PM, David Miller wrote: >> From: Sowmini Varadhan <sowmini.varadhan@xxxxxxxxxx> >> Date: Wed, 4 Mar 2015 14:10:17 -0500 >> >>> On (03/03/15 17:15), David Miller wrote: >>>> Please don't put "ifdef notyet" kind of stuff into your changes, >>>> that is not appropriate. In any event, I want you to translate all >>>> of the PCI DMA implementations, because it is the only way you can >>>> show me that your abstractions are sufficient. >>> >>> That means I have to fix all kinds of dinosaurs in the neighborhood, >>> things like pci_fire, pci_schizo, pci_psycho, sun4u. Some of this >>> hardware was EOL'ed a long time ago. And the last time I remember >>> using a sun4u was back in 2008 (and even then, it was really not >>> very useful for any sort of non-trivial SMP/perf development). >>> >>> But whatever floats your boat. >> >> It's a conversion that has to be done anyways, and otherwise you'll >> have no idea whether your abstractions are sufficient or not. > > Doesn't that run the risk of breaking older platforms, which cannot > realistically be tested? Why not refactor the code such that old > platforms are not touched and focus on abstractions for modern h/w? Are you kidding me? I have a sun4u sitting right under my desk, and several more (all IOMMU variants) at my Seattle house, I'll test it for you. -- To unsubscribe from this list: send the line "unsubscribe sparclinux" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
