On Tue, Feb 13, 2024 at 09:23:40AM -0800, Rob Clark wrote: > From: Rob Clark <[email protected]> > > The brute force iommu_flush_iotlb_all() was good enough for unmap, but > in some cases a map operation could require removing a table pte entry > to replace with a block entry. This also requires tlb invalidation. > Missing this was resulting an obscure iova fault on what should be a > valid buffer address. > > Thanks to Robin Murphy for helping me understand the cause of the fault. > > Cc: Robin Murphy <[email protected]> > Fixes: b145c6e65eb0 ("drm/msm: Add support to create a local pagetable")
Sounds like you're missing a Cc: [email protected] here? Or is there some reason not to backport this fix (to 5.9 and later kernels)? > Signed-off-by: Rob Clark <[email protected]> Johan
