Created attachment 105024 [details] [review]
Use CPU page size instead of hardcoding 4096

Does this patch instead of your changes fix the virtual address allocation?

(In reply to comment #17)
> I am seeing your patch .
> https://bugs.freedesktop.org/attachment.cgi?id=104877&action=edit
> 
> but i cannot find the "si_update_vertex_buffers" function in our mesa
> version. 

Please use Mesa Git master. Once we have a set of fixes, we can consider
backporting them to stable branches, but they have to be on master first.