[PATCH v2 08/18] arm64: don't disable ADR_PREL_PG_HI21* with ARM64_ERRATUM_843419

Ard Biesheuvel ard.biesheuvel at linaro.org
Thu Nov 16 15:20:40 PST 2017


On 16 November 2017 at 23:09, Sami Tolvanen <samitolvanen at google.com> wrote:
> On Thu, Nov 16, 2017 at 10:14:17PM +0000, Ard Biesheuvel wrote:
>> 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.
>
>> 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?



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