On Fri, Nov 11, 2016 at 04:17:37PM +0000, Robin Murphy wrote: > In the original of_iommu_configure design, the thought was that an ops > structure could be IOMMU-instance-specific (hence the later-removed > "priv" member), so I suppose right now it is mostly a hangover from > that. However, it's also what we initialise a device's fwspec with, so > becomes important again if we're ever going to get past the limitations > of buses-which-are-not-actually-buses[1]. Yeah, I discussed this with a few others at LPC. My current idea is to tell the iommu-core which hardware-iommus exist in the system and a seperate iommu_ops ptr for each of them. Then every struct device can link to the iommu-instance it is translated by. We are not there yet, but this will give you the same per-device iommu-ops as implemented here. Joerg -- To unsubscribe from this list: send the line "unsubscribe linux-pci" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
