Messages in this thread | | | Date | Fri, 19 Jul 2019 00:03:25 -0700 | From | Nathan Chancellor <> | Subject | Re: x86 - clang / objtool status |
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On Fri, Jul 19, 2019 at 08:39:00AM +0200, Thomas Gleixner wrote: > On Thu, 18 Jul 2019, Nathan Chancellor wrote: > > > Hi Thomas, > > > > I can't comment on the objtool stuff as it is a bit outside of my area > > of expertise (probably going to be my next major learning project) but I > > can comment on the other errors. > > > > On Thu, Jul 18, 2019 at 10:40:09PM +0200, Thomas Gleixner wrote: > > > Build fails with: > > > > > > clang-10: error: unknown argument: '-mpreferred-stack-boundary=4' > > > make[5]: *** [linux/scripts/Makefile.build:279: drivers/gpu/drm/amd/amdgpu/../display/dc/dcn20/dcn20_resource.o] Error 1 > > > > Arnd sent a patch for this which has been picked up: > > https://lore.kernel.org/lkml/CADnq5_Mm=Fj4AkFtuo+W_295q8r6DY3Sumo7gTG-McUYY=CeVg@mail.gmail.com/ > > Which I applied and now I get: > > ERROR: "__fixdfsi" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > ERROR: "__eqdf2" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > ERROR: "__truncdfsf2" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > ERROR: "__nedf2" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > ERROR: "__floatsidf" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > ERROR: "__divdf3" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > ERROR: "__adddf3" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > ERROR: "__ledf2" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > ERROR: "__subdf3" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > ERROR: "__muldf3" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > ERROR: "__fixunsdfsi" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > ERROR: "__floatunsidf" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > ERROR: "__extendsfdf2" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > ERROR: "__gedf2" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > ERROR: "__ltdf2" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > ERROR: "__gtdf2" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > ERROR: "__floatdidf" [drivers/gpu/drm/amd/amdgpu/amdgpu.ko] undefined! > make[2]: *** [/home/tglx/work/kernel/linus/linux/scripts/Makefile.modpost:91: __modpost] Error 1 >
Ah right, allmodconfig...
https://github.com/ClangBuiltLinux/linux/issues/327
https://github.com/samitolvanen/linux/commit/2fd53310b7d7e9234c4018c45aefe056a0784e2b
This needs to find its way upstream again, I am not sure what's holding it back at this point (probably real world testing), maybe Sami or Nick will know.
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