On Wed, Nov 30, 2022 at 03:14:32PM +0800, Yi Liu wrote: > On 2022/11/30 04:29, Jason Gunthorpe wrote: > > Cover the essential functionality of the iommufd with a directed test from > > userspace. This aims to achieve reasonable functional coverage using the > > in-kernel self test framework. > > > > A second test does a failure injection sweep of the success paths to study > > error unwind behaviors. > > > > This allows achieving high coverage of the corner cases in pages.c. > > > > Tested-by: Nicolin Chen <nicolinc@xxxxxxxxxx> > > Tested-by: Matthew Rosato <mjrosato@xxxxxxxxxxxxx> # s390 > > Signed-off-by: Jason Gunthorpe <jgg@xxxxxxxxxx> > > Signed-off-by: Nicolin Chen <nicolinc@xxxxxxxxxx> > > Signed-off-by: Yi Liu <yi.l.liu@xxxxxxxxx> > > with sudo echo 4 > /proc/sys/vm/nr_hugepages > > Both "sudo ./iommufd" and "sudo ./iommufd_fail_nth" works on my > side. It is interesting that you need that, my VM doesn't, I wonder what the difference is Thanks, Jason
