[RFC PATCH 6/9] arm64: smccc: create proper stack frames for HVC/SMC calls

[Mark Brown]

On Wed, Oct 13, 2021 at 05:22:40PM +0200, Ard Biesheuvel wrote:
> Create proper stack frames using the provided macros for HVC/SMC calling
> helpers that use the stack. This adds the PAC return address signing
> when enabled, and ensures that the unwinder can deal with occurrences
> of these routines appearing on the call stack.

Reviewed-by: Mark Brown <broonie at kernel.org>
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