Re: [PATCH] RISC-V: Make CONFIG_RELOCATABLE user selectable

[Palmer Dabbelt]

On Wed, 27 Oct 2021 02:45:27 PDT (-0700), schwab@xxxxxxxxxxxxxx wrote:
> On Okt 27 2021, Alexandre Ghiti wrote:
>
> > On Wed, Oct 27, 2021 at 10:03 AM Andreas Schwab <schwab@xxxxxxxxxxxxxx> 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).