[PATCH v2 7/7] arm64/sve: Don't zero non-FPSIMD register state on syscall by default

[Marc Zyngier]

On Tue, 19 Jul 2022 20:35:46 +0100,
Mark Brown <broonie at kernel.org> wrote:
> 
> On Tue, Jul 19, 2022 at 06:35:37PM +0100, Catalin Marinas wrote:
> > IIRC both Will and Mark R commented in the past that they'd like the
> > current de-facto ABI to become the official one. I'll let them comment.
> 
> That would be good.  I've not heard anything from Will either directly
> or indirectly.  Mark R has indicated privately directly to me that he
> originally pushed for the currently implemented behaviour and prefers
> it.  Marc Zyngier has previously noted publicly the current behaviour
> being a consideration in the context of discusion of optimisation ideas
> like this one, I was a bit surprised that he commented on an earlier
> patch in the series but not this one.

Just because I don't repeat myself doesn't mean I changed my mind. I
still don't buy the ABI change, as there is already a large(-ish) body
of SW that assumes the current semantics.

	M.

-- 
Without deviation from the norm, progress is not possible.