This is a cut and paste from the current amd_iommu driver. I really have no idea if it's a good idea or not. It looks like [email protected] might be the person to ask.
@Joerg Roedel should we keep this? On Mon, Apr 15, 2019 at 7:33 AM Christoph Hellwig <[email protected]> wrote: > > > +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? _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
