ppc LE questions (seeking help hand info pointers)

Tom Rini trini at kernel.crashing.org
Fri Sep 21 01:58:25 EST 2001

On Thu, Sep 20, 2001 at 11:42:39AM -0400, Mark Salisbury wrote:

> question 1.  are there already existing patch sets (rejected from
> mainline inclusion) available for use as a starting point?

There was a bit of work, just for the kernel.  Nothing on the toolchain

> question 2.  if 1, what is the primary reason for rejection.

Being a LE & BE arch becomes a giant PITA for no gain.

> question 3.  is there a general issue of endian safety in linux (I would
> think not) or just in the ppc-specific code?

In theory the generic code is endian safe, by and large.  The arch/ppc and
include/asm-ppc stuff assumes BE.

> question 4. assuming I was willing to deliver a clean, complete LE
> enabling patch (including devices that are relevant to me), as a compile
> time config option and maintain that patch, what would be the primary
> obstacle to inclusion in the main line.

The objection to being an arch that attempts to support both LE and BE.

Tom Rini (TR1265)

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