On Mon, May 22, 2017 at 11:07:25AM -0700, Jon Bloomfield wrote: > BXT requires accesses to the GTT (i.e. PTE updates) to be serialized > when IOMMU is enabled. This patch guarantees this by wrapping all > updates in stop_machine and using a flushing read to guarantee that > the GTT writes have reached their destination before restarting. > Testcase? igt/gem_concurrent_blit shows the failure. -Chris -- Chris Wilson, Intel Open Source Technology Centre _______________________________________________ Intel-gfx mailing list Intel-gfx@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/intel-gfx
