> From: Jason Gunthorpe <[email protected]> > Sent: Thursday, September 4, 2025 1:47 AM > > The iommufd self test uses an xarray to store the pfns and their orders to > emulate a page table. Slightly modify the amdv1 page table to create a > real page table that has similar properties: > > - 2k base granule to simulate something like a 4k page table on a 64K > PAGE_SIZE ARM system > - Contiguous page support for every PFN order > - Dirty tracking > > AMDv1 is the closest format, as it is the only one that already supports > every page size. Tweak it to have only 5 levels and an 11 bit base granule > and compile it separately as a format variant. > > Tested-by: Alejandro Jimenez <[email protected]> > Signed-off-by: Jason Gunthorpe <[email protected]>
Reviewed-by: Kevin Tian <[email protected]>
