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9babb23138
TFU units is doing a readahead of 64 bytes. This is causing invalid read MMU errors that can be observed at the nightly full Vulkan runs on Broadcom devices. 04:13:59.969: [ 85.623205] v3d 1002000000.v3d: MMU error from client TLB (3) at 0x4869000, pte invalid 04:14:05.408: [ 91.019321] v3d 1002000000.v3d: MMU error from client TLB (3) at 0x5209000, pte invalid 04:14:05.413: [ 91.031662] v3d 1002000000.v3d: MMU error from client TLB (3) at 0x7521000, pte invalid Although the log reports the TLB the real culprit is the TFU. A fix to the kernel was submitted to fix AXI ID on V3D 4.2 and 7.1 So doing an over-allocation of 64-bytes at v3dv_AllocateMemory is the simplest method to make these MMU errors itp disapear. Running ./deqp-vk for an hour, we can see that ~%40 of allocations would need an extra page (4096 bytes) to accomodate this 64 bytes padding. Fixes: |
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`Mesa <https://mesa3d.org>`_ - The 3D Graphics Library ====================================================== Source ------ This repository lives at https://gitlab.freedesktop.org/mesa/mesa. Other repositories are likely forks, and code found there is not supported. Build & install --------------- You can find more information in our documentation (`docs/install.rst <https://docs.mesa3d.org/install.html>`_), but the recommended way is to use Meson (`docs/meson.rst <https://docs.mesa3d.org/meson.html>`_): .. code-block:: sh $ meson setup build $ ninja -C build/ $ sudo ninja -C build/ install Support ------- Many Mesa devs hang on IRC; if you're not sure which channel is appropriate, you should ask your question on `OFTC's #dri-devel <irc://irc.oftc.net/dri-devel>`_, someone will redirect you if necessary. Remember that not everyone is in the same timezone as you, so it might take a while before someone qualified sees your question. To figure out who you're talking to, or which nick to ping for your question, check out `Who's Who on IRC <https://dri.freedesktop.org/wiki/WhosWho/>`_. The next best option is to ask your question in an email to the mailing lists: `mesa-dev\@lists.freedesktop.org <https://lists.freedesktop.org/mailman/listinfo/mesa-dev>`_ Bug reports ----------- If you think something isn't working properly, please file a bug report (`docs/bugs.rst <https://docs.mesa3d.org/bugs.html>`_). Contributing ------------ Contributions are welcome, and step-by-step instructions can be found in our documentation (`docs/submittingpatches.rst <https://docs.mesa3d.org/submittingpatches.html>`_). Note that Mesa uses gitlab for patches submission, review and discussions.