On Fri, Sep 04, 2020 at 11:05:19AM +0200, Joerg Roedel wrote: > 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? As Dmitry said, there's a new patch for this which is better. I've replied with an Acked-by and Tested-by to v5. Thierry
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