On Wed, Mar 30, 2016 at 5:03 AM, Arnd Bergmann <arnd@xxxxxxxx> wrote: > On Wednesday 30 March 2016 10:13:53 Richard Weinberger wrote: >> >> I fully understand your point of view. COMPILE_TEST is a monster that >> can do the heavy lifting for you, but monsters also have claws and fangs. >> >> Having COMPILE_TEST having depend on !UML works for me. But don't >> we have other archs without io mem? At least a few years ago while >> porting nandsim to UML I found s390 that lacks of io mem too. > > s390 gained IOMEM support when they started having PCI attachments. I'm confused how s390 defines HAS_IOMEM and includes it from lib/Kconfig though. > arch/score selects NO_IOMEM, though they do in fact use MMIO, and > I'm sure their architecture has lots of other problems with build > testing that nobody cares about. > > arch/tile can select NO_IOMEM when PCI is disabled, they might > care about this, though I think they also have other build-time > issues. > >> Maybe we depend COMPILE_TEST on HAS_IOMEM? > > That sounds fine with me as well. That or !UML is fine, but I still think we should rid drivers from depending on HAS_IOMEM. We probably still have cases where the only dependency besides the driver's subsystem is HAS_IOMEM. Rob -- To unsubscribe from this list: send the line "unsubscribe linux-arch" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
