[RFC PATCH v2 6/6] KVM: arm64: Indroduce support for userspace SMCCC filtering

[Oliver Upton]

On Sat, Feb 11, 2023 at 01:37:59AM +0000, Oliver Upton wrote:

[...]

> +    struct kvm_smccc_filter_range {
> +            __u32 base;
> +            __u32 nr_functions;
> +            __u8 action;
> +            __u8 pad[7];
> +    };
> +
> +    struct kvm_smccc_filter {
> +            __u32 nr_entries;
> +            __u32 pad;
> +
> +            struct kvm_smccc_filter_range entries[];
> +    };

After dealing with this when writing the selftest, I feel like this is a
bit over complicated for both userspace and kernel.

Next revision will take a similar approach to the PMU event filter,
allowing userspace to insert new ranges into the filter with successive
calls to the interface.

-- 
Thanks,
Oliver