On 11/22/22 07:00, Johannes Berg wrote: > On Tue, 2022-11-22 at 08:55 -0500, Alex Deucher wrote: >>> >>> + /kisskb/src/arch/um/include/asm/processor-generic.h: error: called object is not a function or function pointer: => 94:18 >>> + /kisskb/src/drivers/gpu/drm/amd/amdgpu/../amdkfd/kfd_topology.c: error: control reaches end of non-void function [-Werror=return-type]: => 1934:1 >>> >>> um-x86_64/um-all{mod,yes}config (in kfd_cpumask_to_apic_id()) >> >> Presumably cpu_data is not defined on um-x86_64? Does it even make >> sense to build drivers on um-x86_64? > > Drivers in general yes ;-) > > This driver, probably not. > > But the issue is that a lot of drivers "depends on X86_64" or such, > where only "X86" is the arch symbol. You could add "X86 && X86_64" to > really build on x86 64-bit only. > > I didn't check this driver, but this has mostly popped up since UM got > PCI support some time ago (which I added.) I have patches for lots of these issues, but some people said that they would want to build DRM drivers for use with KUNIT (i.e. UML), so I thought that meant my patches were not needed. -- ~Randy