On Mon, May 16, 2022 at 08:41:16PM -0300, Jason Gunthorpe wrote: > The atomic based scheme for tracking the group->container and group->kvm > has two race conditions, simplify it by adding a rwsem to protect those > values and related and remove the atomics. > > This is on github: https://github.com/jgunthorpe/linux/commits/vfio_group_locking > > v2: > - Updated comments and commit messages > - Rebased on vfio next > - Left the dev_warn in place, will adjust it later > - s/singleton_file/opened_file/ > v1: https://lore.kernel.org/r/0-v1-c1d14aae2e8f+2f4-vfio_group_locking_jgg@xxxxxxxxxx > > Cc: Nicolin Chen <nicolinc@xxxxxxxxxx> Sanity tested on x86_64 and ARM64. Tested-by: Nicolin Chen <nicolinc@xxxxxxxxxx>
