Re: [PATCH v2 3/7] arm64: cpufeature: Fix the type of no FP/SIMD capability

[Catalin Marinas]

On Tue, Dec 17, 2019 at 06:33:58PM +0000, Suzuki K Poulose wrote:
> The NO_FPSIMD capability is defined with scope SYSTEM, which implies
> that the "absence" of FP/SIMD on at least one CPU is detected only
> after all the SMP CPUs are brought up. However, we use the status
> of this capability for every context switch. So, let us change
> the scope to LOCAL_CPU to allow the detection of this capability
> as and when the first CPU without FP is brought up.
> 
> Also, the current type allows hotplugged CPU to be brought up without
> FP/SIMD when all the current CPUs have FP/SIMD and we have the userspace
> up. Fix both of these issues by changing the capability to
> BOOT_RESTRICTED_LOCAL_CPU_FEATURE.
> 
> Fixes: 82e0191a1aa11abf ("arm64: Support systems without FP/ASIMD")
> Cc: Will Deacon <will@xxxxxxxxxx>
> Cc: Mark Rutland <mark.rutland@xxxxxxx>
> Cc: Catalin Marinas <catalin.marinas@xxxxxxx>
> Signed-off-by: Suzuki K Poulose <suzuki.poulose@xxxxxxx>

Reviewed-by: Catalin Marinas <catalin.marinas@xxxxxxx>