> +static void amd_iommu_flush_np_cache(struct iommu_domain *domain,
> + unsigned long iova, size_t size)
> +{
> + struct protection_domain *dom = to_pdomain(domain);
> +
> + if (unlikely(amd_iommu_np_cache)) {
Is this case really so unlikely that it needs a static branch prediction
hint?
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