It was observed that allocating large objects via i915 driver (igt-gpu-tools/tests/gem_exec_big/single) the folios and their pages were not handled properly leading to buffer corruptions during relocations. Furthermore, using iommu driver in this context would leave residual mappings in memory that could not be released, hogging available RAM even after the process ended.
Krzysztof Karas (2): drm/i915/shmem: Prevent overflows on small segments drivers/iommu: Unroll unsuccessful mapping drivers/gpu/drm/i915/gem/i915_gem_shmem.c | 2 +- drivers/iommu/dma-iommu.c | 10 ++++++++-- 2 files changed, 9 insertions(+), 3 deletions(-) -- 2.34.1
