On Fri, Aug 14, 2020 at 07:22:52PM +0300, Dmitry Osipenko wrote: > The mapping operations of the Tegra SMMU driver are subjected to a race > condition issues because SMMU Address Space isn't allocated and freed > atomically, while it should be. This patch makes the mapping operations > atomic, it fixes an accidentally released Host1x Address Space problem > which happens while running multiple graphics tests in parallel on > Tegra30, i.e. by having multiple threads racing with each other in the > Host1x's submission and completion code paths, performing IOVA mappings > and unmappings in parallel. > > Cc: <stable@xxxxxxxxxxxxxxx> > Signed-off-by: Dmitry Osipenko <digetx@xxxxxxxxx> Thierry, does this change look good to you?
