[PATCH] RISC-V: Make CONFIG_RELOCATABLE user selectable

[Palmer Dabbelt]

On Wed, 27 Oct 2021 02:45:27 PDT (-0700), schwab at linux-m68k.org wrote:
> On Okt 27 2021, Alexandre Ghiti wrote:
>
>> On Wed, Oct 27, 2021 at 10:03 AM Andreas Schwab <schwab at linux-m68k.org> wrote:
>>>
>>> On Okt 26 2021, Palmer Dabbelt wrote:
>>>
>>> > +config RELOCATABLE
>>> > +     bool "Build a relocatable kernel"
>>> > +     depends on MMU && 64BIT && !XIP_KERNEL
>>> > +     help
>>> > +          This builds a kernel as a Position Independent Executable (PIE),
>>> > +          which retains all relocation metadata required to relocate the
>>> > +          kernel binary at runtime to a different virtual address than the
>>> > +          address it was linked at.
>>> > +          Since RISCV uses the RELA relocation format, this requires a
>>> > +          relocation pass at runtime even if the kernel is loaded at the
>>> > +          same address it was linked at.
>>>
>>> When in doubt, do what?
>>
>> Then do not enable.
>
> Please add that to the help string.

Thanks, I forgot about that.  I've added it, but this is still a bit in 
flux so I'm not going to send a v2 right now (it's on top of Alex's 
other patches and should probably be squashed in, anyway).