[PATCH] RISC-V: Make CONFIG_RELOCATABLE user selectable

Andreas Schwab schwab at linux-m68k.org
Wed Oct 27 02:45:27 PDT 2021


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.

Andreas.

-- 
Andreas Schwab, schwab at linux-m68k.org
GPG Key fingerprint = 7578 EB47 D4E5 4D69 2510  2552 DF73 E780 A9DA AEC1
"And now for something completely different."



More information about the linux-riscv mailing list