On Wed, Feb 8, 2017 at 2:21 PM, Breno Leitao <bren...@br.ibm.com> wrote: > On 02/07/2017 07:22 PM, Lennart Sorensen wrote: >> ppc64el is different since it is targeting systems where the applications >> are expected to need a lot of ram, and switching the little endian >> improves performance when working with GPUs (which are all designed >> for the x86 little endian world). At the same time being able to >> assume power8 as a minimum cpu means you can gain some instruction set >> improvements that normal powerpc can't assume. > > Correct. And we can't do 32-bits userspace also, since we do not have a > 32-bits little endian ABI. For ppc64el, bi-arch does not seem to be a valid > feature.
I always assumed it was possible to run ppc32 (be) or ppc64 (be) userlands on a ppc64el system. Is this a restriction at Linux level or hardware level ? -M
