[PATCH] arm64: Document requirement for access to FEAT_HCX

[Catalin Marinas]

On Wed, May 12, 2021 at 05:23:50PM +0100, Mark Brown wrote:
> v8.7 of the architecture introduced FEAT_HCX which adds an additional
> hypervisor configuration register HCRX_EL2. Even though Linux does not
> currently make use of this feature let's document that the EL3 trap for
> access to the register should be disabled so that we are able to make
> use of it in future.
> 
> Signed-off-by: Mark Brown <broonie at kernel.org>

Acked-by: Catalin Marinas <catalin.marinas at arm.com>