arm64: Allow a capability to be checked on a single CPU
Now that the capabilities are only available once all the CPUs have booted, we're unable to check for a particular feature in any subsystem that gets initialized before then. In order to support this, introduce a local_cpu_has_cap() function that tests for the presence of a given capability independently of the whole framework. Reviewed-by: NCatalin Marinas <catalin.marinas@arm.com> Signed-off-by: NMarc Zyngier <marc.zyngier@arm.com> [ Added preemptible() check ] Signed-off-by: NSuzuki K Poulose <suzuki.poulose@arm.com> [will: remove duplicate initialisation of caps in this_cpu_has_cap] Signed-off-by: NWill Deacon <will.deacon@arm.com>
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