On 16 November 2017 at 23:09, Sami Tolvanen [off-list ref] wrote:

On Thu, Nov 16, 2017 at 10:14:17PM +0000, Ard Biesheuvel wrote:

quoted

OK, so my concern here is that this code probably only operates on
fully linked binaries, and not partially linked object files like
kernel modules.

Right. That makes sense.

quoted

What is preventing us from using the large model with clang?

We pass -mcmodel=large to clang, but I just confirmed that the
attribute isn't stored in LLVM IR, which means it's not used during
link time compilation. I'll see if we can solve this problem by
passing the correct code model directly to LLVMgold instead. Thanks
for pointing this out.

So at which point is the IR in a partially linked object file
converted into executable code?