[PATCH 1/4] arm64/sysreg: Allow a 'Mapping' descriptor for system registers

[Mark Brown]

On Sat, Dec 07, 2024 at 07:07:37PM +0000, Marc Zyngier wrote:
> *EL02 and *_EL12 system registers are actually only accessors for
> EL0 and EL1 registers accessed from EL2 when HCR_EL2.E2H==1. They
> do not have fields of their own.
> 
> To that effect, introduce a 'Mapping' entry, describing which
> system register an _EL12 register maps to.
> 
> Implementation wise, this is handled the same was as Fields,
> which ls only a comment.

With Mark Rutland's suggested clarifications

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