[PATCH v2 2/4] arm64/signal: Include TPIDR2 in the signal context

[Mark Brown]

On Mon, Nov 14, 2022 at 04:10:06PM +0000, Will Deacon wrote:
> On Mon, Oct 31, 2022 at 08:17:34PM +0000, Mark Brown wrote:

> > +			if (user->tpidr2)
> > +				goto invalid;

> > +			if (size != sizeof(*user->tpidr2))

> Why are you requiring an exact match here? Won't that hinder any future
> extension of the structure?

It will but since the structure is explicitly for a single sysreg
that's intentional - the thinking was to just continue to model
any more sysregs we want to report in the signal context in the
same format with their own contexts.  It felt like it fit better
into how everything else in the signal context is extended.
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