[Skiboot] [PATCH v10 00/31] little endian skiboot

Oliver O'Halloran oohall at gmail.com
Mon Jan 20 17:21:26 AEDT 2020

On Sun, Dec 8, 2019 at 11:24 PM Nicholas Piggin <npiggin at gmail.com> wrote:
> A few reasons for this:
> - The rest of the software is moving (moved) to LE. BE is still
>   supported, but the fact is LE will be better tested from now on in
>   terms of toolchain.
> - ELFv2 ABI is a smaller image, nicer asm code. We can use ELFv2 with BE
>   but toolchain won't officially support or test it.
> - Some levels of OpenPOWER ISA allow a conforming implementation to
>   implement LE only.
> - Less stack usage of ELFv2 facilitates OPAL call convention that uses
>   the host kernel stack (which is a whole different story but has
>   benefits).
> - Common endian with the host kernel can help with debugging skiboot
>   with host kernel facilities (like BUG, xmon). We could achieve the
>   same by teaching kernel about different endianness, but it's more work.

Thanks, merged to master as 266573939475c2ad4c93182a0775b8aaff348642

Going forwards we probably want some more CI to check for BE vs LE
regressions. I'm not too sure what to do there other than more boot
testing though.

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