> From: Jason Gunthorpe <[email protected]> > Sent: Thursday, September 4, 2025 1:47 AM > > IOMMU HW now supports updating a dirty bit in an entry when a DMA > writes > to the entry's VA range. iommufd has a uAPI to read and clear the dirty > bits from the tables. > > This is a trivial recursive descent algorithm to read and optionally clear > the dirty bits. The format needs a function to tell if a contiguous entry > is dirty, and a function to clear a contiguous entry back to clean. > > Tested-by: Alejandro Jimenez <[email protected]> > Signed-off-by: Jason Gunthorpe <[email protected]>
Reviewed-by: Kevin Tian <[email protected]>
