On Fri, Jun 24, 2016 at 06:13:14AM -0700, Nadav Amit wrote: > According to the manual: "Hardware access to ... invalidation queue ... > are always coherent." > > Remove unnecassary clflushes accordingly.
It is one thing what the spec says and another how hardware really behaves. Have you tested this on (potentially really old) VT-d machines to make sure the spec is _always_ right here? Joerg _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu