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

From: Sami Tolvanen
Date: Fri Nov 17 2017 - 13:50:24 EST

On Fri, Nov 17, 2017 at 09:54:48AM +0000, Ard Biesheuvel wrote:
> OK, so all IR objects are converted into a single .o file
> encapsulating the module image. Does this give the same benefits as
> LTO linking IR objects to a fully linked executable?

Yes, it does.

> Even if it does, partial linking is not something the toolchain
> people are usually crazy about, so it would be nice to have some
> confirmation that this is a usage model that is fully supported.

I confirmed with our LLVM developers that while this is less common,
it's fully supported.

I will also drop this patch in v3 as passing code model to LLVMgold
fixes the issue with LTO.