virtio-gpu without ARCH_HAS_SG_CHAIN
hch at infradead.org
Tue Oct 30 23:12:06 PDT 2018
There is no good reason to not define ARCH_HAS_SG_CHAIN. To fix
your immediate problem just select it from riscv, as riscv uses
the generic dma-direct code which is chained S/G safe by definition.
And if you want to get extra points do a quick audit of the remaning
iommu drivers on architectures that don't define it so that we can
kill the symbol.
More information about the linux-riscv