[PATCH v3] RISC-V: Enable dead code elimination

[Palmer Dabbelt]

On Tue, 20 Jun 2023 13:13:06 PDT (-0700), ndesaulniers at google.com wrote:
> On Wed, May 17, 2023 at 04:29:36PM +0800, Zhangjin Wu wrote:
>> Select CONFIG_HAVE_LD_DEAD_CODE_DATA_ELIMINATION for RISC-V, allowing
>> the user to enable dead code elimination. In order for this to work,
>> ensure that we keep the alternative table by annotating them with KEEP.
>>
>
> Just cross referencing the report from Palmer against v2; I see orphan
> section warnings from the linker related to the EFI stub when building
> allmodconfig with this patch applied.
>
> v2: thread for reference.
> https://lore.kernel.org/linux-riscv/CAKwvOdmsgMN5oQpDLh12D0X-CfQDtHC-EtxHcBnADkhnyitMKQ@mail.gmail.com/

Sorry for replying to the v2, I'm marking that as superseeded in 
patchwork.  IIUC it is a real issue on your end too?  I'm also not 100% 
sure about the hang, I just let LLD cook for about 10 minutes before I 
noticed it was still running and posted.