[Bug 82455] Failed to allocate virtual address for buffer

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=82455

--- Comment #21 from charlie <407883775 at qq.com> ---
Created attachment 105313
  --> https://bugs.freedesktop.org/attachment.cgi?id=105313&action=edit
GPU CP LOOKUP

    I am git newest mesa code, and change PAGE_SIZE alignment.
    I am closed all GPU DMA engine. R600_DMA=nodma.
    but the GPU CP is locked 
    This time the ring index is 3. it isa DMA_INDEX_RING 

  [  434.621770] radeon 0000:0a:00.0: GPU lockup CP stall for more than
5000msec
[  434.621805] radeon 0000:0a:00.0: GPU lockup (waiting for 0x0000000000000017
last fence id 0x0000000000000016)
[  434.621834] radeon 0000:0a:00.0: scheduling IB failed (-78).

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