On Wed, 25 Feb 2015, David Daney wrote: > > Back in 2010 you made CONFIG_SWIOTLB mandatory (commit b93b2a). This > > prevents the Continuous > > memory allocation from being enabled. Would you be willing to accept a patch > > which allows > > this option to be disabled if CONFIG_EXPERT is set? > > Ralf has the final say, so it really is not up to me. > > That said, any patch that improves the flexibility of the kernel without > adversely effecting reliability and correctness would be welcome. So how's DMA to/from 64-bit memory supposed to be handled then for 32-bit PCI option cards that don't support DAC by systems that use continuous memory allocation (whatever that is)? Is that a bug in continuous memory allocation support? Maciej
