[PATCH v11 09/40] arm64/sme: Early CPU setup for SME

[Catalin Marinas]

On Mon, Feb 07, 2022 at 03:20:38PM +0000, Mark Brown wrote:
> SME requires similar setup to that for SVE: disable traps to EL2 and
> make sure that the maximum vector length is available to EL1, for SME we
> have two traps - one for SME itself and one for TPIDR2.
> 
> In addition since we currently make no active use of priority control
> for SCMUs we map all SME priorities lower ELs may configure to 0, the
> architecture specified minimum priority, to ensure that nothing we
> manage is able to configure itself to consume excessive resources.  This
> will need to be revisited should there be a need to manage SME
> priorities at runtime.
> 
> Signed-off-by: Mark Brown <broonie at kernel.org>

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