Re: [PATCH v4 18/29] arm64: add POE signal support

On Thu, Aug 15, 2024 at 04:09:26PM +0100, Dave Martin wrote:

I'm coming round to the view that trying to provide absolute guarantees
about the signal frame size is unsustainable.  x86 didn't, and got away
with it for some time...  Maybe we should just get rid of the relevant
comments in headers, and water down guarantees in the SVE/SME
documentation to recommendations with no promise attached?

I tend to agree, especially given that even within the fixed size our
layout is variable.  It creates contortions and realistically the big
issue is the vector extensions rather than anything else.  There we're
kind of constrained in what we can do.