[Spice-devel] [PATCH 2/2] [xf86-video-qxl] stability for dual head: use larger chunks when splitting image

[David Mansfield]

The maximum number of "commands" that can be queued at once is fixed at 
compile time at MAX_RELOCS. However, during the creation of an image 
object in qxl_image_create(), the image is split into commands of 
maximum size 512*512. For a large dual-head system, it is easy to create 
an image for which the number of chunks will result in an overflow of 
MAX_RELOCS number of "commands".

Identify this scenario and dynamically increase the chunk size to avoid 
the overflow, and the resulting assert() which crashes Xorg.

Note: the debugging statement is currently enabled in this patch.
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