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SubjectRe: [PATCH v4 1/7] arm64: add support for the AMU extension v1
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Ionela Voinescu writes:

> The activity monitors extension is an optional extension introduced
> by the ARMv8.4 CPU architecture. This implements basic support for
> version 1 of the activity monitors architecture, AMUv1.
>
> This support includes:
> - Extension detection on each CPU (boot, secondary, hotplugged)
> - Register interface for AMU aarch64 registers
> - amu=[0/1/on/off/y/n] kernel parameter to disable detection and
> counter access at runtime
>
> Signed-off-by: Ionela Voinescu <ionela.voinescu@arm.com>
> Cc: Catalin Marinas <catalin.marinas@arm.com>
> Cc: Will Deacon <will@kernel.org>
> Cc: Suzuki K Poulose <suzuki.poulose@arm.com>
> Cc: Marc Zyngier <maz@kernel.org>
> Cc: Mark Rutland <mark.rutland@arm.com>

Reviewed-by: Valentin Schneider <valentin.schneider@arm.com>

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