Hi, When trying to build a Linux kernel with clang, I encountered a GPF problem in the amdgpu module. Details of the issue can be found here: https://github.com/ClangBuiltLinux/linux/issues/735 In short, the stack is aligned to 8 bytes while clang assumed the stack is aligned to 16 bytes (because -mstack-alignment=16 is passed), and generated an unaligned MOVAPD. My question is, how is this supposed to work? To my understanding, gcc option -mpreferred-stack-boundary does not align the stack, it simply make gcc assume the stack alignment. Passing -mpreferred-stack-boundary=4 to DC code seems to be wrong since the actual stack alignment is only 8 bytes. Yet this GPF has not been observed when compiling the kernel with gcc. I don't really understand. -- Regards Yuxuan Shui _______________________________________________ amd-gfx mailing list amd-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/amd-gfx
