[PATCH] arm64: Restrict CPU_BIG_ENDIAN to GNU as or LLVM IAS 15.x or newer

[Mark Rutland]

On Thu, Oct 26, 2023 at 04:28:45PM +0100, Catalin Marinas wrote:
> On Wed, Oct 25, 2023 at 11:31:14AM -0700, Nathan Chancellor wrote:
> > On Wed, Oct 25, 2023 at 07:01:53PM +0100, Mark Rutland wrote:
> > > On Wed, Oct 25, 2023 at 10:21:28AM -0700, Nathan Chancellor wrote:
> > > > A recent refactoring in the arm64 tree exposed an assembler bug in LLVM
> > > > with regards to the generation of NOPs for arm64 big endian, resulting
> > > > in near-immediate crashes on boot in QEMU.
> > > 
> > > Could we please put a bit more detail into the commit message about what
> > > exactly went wrong and how this was detected? I know that can be found
> > > from the github links below, but having to go chase that is a bit of a
> > > pain.
> > 
> > Sure, sorry for leaving that out of the initial revision.
> > 
> > > Would you be happy with the below? I've also added a Cc stable, since
> > > this is a potential state corruption issue.
> > 
> > That text looks much better to me, especially since it explains exactly
> > what goes wrong here (which I was unsure of, this helps). Thanks a lot!
> > 
> > Will / Catalin, would you like a v2 with that text or could it just be
> > copied and pasted from Mark's mail during application time? I am happy
> > to do whatever.
> 
> I'll copy/paste Mark's text, no need for v2. Thanks.

If you do, could you fix my typo in the first line? I accidentally wrote:

	LLVM's integrated assemble

When that should have been:

	LLVM's integrated assembler

If you're already picked the patch it's not worth worrying about.

Mark.