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...> adequate interconnect. Interestingly if I allow writecombined mappings in the kernel I get faults when attempting the read the mapped area: [ 78.074854] Unhandled fault: external abort on non-linefetch (0x1008) at 0xf003e010 ... [ 78.337862] [<c03491a8>] (nouveau_bo_rd32) from [<c0346374>] (nouveau_fence_update+0x5c/0x80) [ 78.352536] [<c0346374>] (nouveau_fence_update) from [<c03463b0>] (nouveau_fence_done+0x18/0x28) [ 78.367531] [<c03463b0>] (nouveau_fence_done) from [<c02b852c>] (ttm_bo_wait+0x104/0x184) [ 78.381915] [<c02b852c>] (ttm_bo_wa...

...g virtual mappings of the same physical memory is documented to at least produce undefined behavior on ARMv7. Regards, Lucas > [ 78.074854] Unhandled fault: external abort on non-linefetch > (0x1008) at 0xf003e010 > ... > [ 78.337862] [<c03491a8>] (nouveau_bo_rd32) from [<c0346374>] > (nouveau_fence_update+0x5c/0x80) > [ 78.352536] [<c0346374>] (nouveau_fence_update) from [<c03463b0>] > (nouveau_fence_done+0x18/0x28) > [ 78.367531] [<c03463b0>] (nouveau_fence_done) from [<c02b852c>] > (ttm_bo_wait+0x104/0x184) > [ 78.381915]...

Hi everyone, Here is the second batch of patches to add GK20A support to Nouveau. This time we are adding the actual chip support, and this series brings the driver to a point where a slightly-tweaked Mesa successfully runs shaders and renders triangles on GBM! Many thanks to Thierry Reding and the people on the #nouveau IRC channel for their help without which we would not have reached this