Besides the altcall conversion, some further adjustments appeared desirable to do while touching that area.
1: IOMMU/x86: switch to alternatives-call patching in further instances 2: VT-d / x86: re-arrange cache syncing 3: VT-d: replace flush_all_cache() 4: IOMMU/PCI: propagate get_device_group_id() failure I'm sending this v2 after waiting for quite some time on continuing some aspects which were discussed on the v1 thread, but no luck. Also there's a new 4th patch now, as kind of a result from on part of that discussion. Jan