Re: [PATCH v10 23/40] arm64/signal: Set up and restore the GCS context for signal handlers

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On Thu, Aug 15, 2024 at 04:11:56PM +0100, Dave Martin wrote:
> On Thu, Aug 15, 2024 at 03:45:45PM +0100, Mark Brown wrote:
> > On Thu, Aug 15, 2024 at 02:37:22PM +0100, Dave Martin wrote:

> > > Is there a test for taking and returning from a signal on an alternate
> > > (main) stack, when a shadow stack is in use?  Sounds like something
> > > that would be good to check if not.

> > Not specifically for any of the architectures.

> Can you see any reason why this shouldn't work?

No, it's expected to work - I'm just not specifically aware of an
explicit test for it.  Possibly some of the userspace bringup work
might've covered it?  Any libc tests for altstack support should've
exercised it for example.

> Maybe I'll hacking up a test if I get around to it, but don't take this
> as a promise!

Thanks for your firm commitment!  :P

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