[llvmlinux] Latest LLVMLinux Git not booting (both from build architecture and source tree)

Jan-Simon Moeller dl9pf at gmx.de
Sun Nov 2 18:59:24 UTC 2014


Hi !

Thanks for the report.   Let's see.   Can you start with a really simple 
configuration of the kernel (no smp, no tracing, SLUB allocator ! )

Right now we know the SLAB allocator i broken (check your .config).

Best regards,
Jan-Simon 


Am Samstag, 1. November 2014, 16:06:37 schrieb Jason Gionta:
> Hi,
> 
> I am trying to get LLVMLinux to boot in QEMU using the latest Git hub
> sources building both the base source tree (make HOSTCC=clang CC=clang ...)
> and through the build architecture (./target/x86_64_tiny,./target/x86_64).
> I have followed the instruction from both
> http://llvm.linuxfoundation.org/index.php/X86_64 and
> http://llvm.linuxfoundation.org/index.php/Main_Page
> 
> All three builds succeed but fail to boot during the setup stage and show
> "Warning: Ancient bootloader, some functionality may be limited!" after
> which the setup seems to hang never reaching init/main.c:start_kernel. (I
> set a gdb break point on start_kernel)



> Can anyone else confirm this or help point me to how to begin solving this
> problem? I am having trouble debugging the boot code through gdb because
> the vmlinux doesn't have the boot setup symbols. At a minimum I would
> believe the x86_64_tiny should boot but it certainly doesn't.
> 
> Thanks,
> 
> Jason



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