>> Add a helper function to determine an overlap between two ranges. >> If an overlap, the function returns the overlapping offset and size. >> >> The VFIO PCI variant driver emulates the PCI config space BAR offset >> registers. These offset may be accessed for read/write with a variety >> of lengths including sub-word sizes from sub-word offsets. The driver >> makes use of this helper function to read/write the targeted part of >> the emulated register. >> >> This is replicated from Yishai's work in >> https://lore.kernel.org/all/20231207102820.74820-10-yishaih@xxxxxxxxxx > > The virtio-vfio-net changes have been accepted, so this will need to be > rebased on the vfio next branch or v6.8-rc1 when Linus comes back > online to process the pull request. The revised patch should > consolidate so that virtio-vfio-pci also uses the new shared function. Thanks for pointing that out. I'll rebase it with v6.8-rc1. > As noted by Rahul, the name should be updated to align with the > vfio-pci-core namespace. Kerneldoc would also be a nice addition since > this is a somewhat complicated helper. Thanks, Ack.
