[Bug 1197316] Re: GPU hang with Haswell GT3

[Timo Aaltonen]

** Description changed:

  [Impact]
  
  renders GT3 haswells unusable
  
  [Test Case]
  
- use ubuntu with mesa < 9.1.4, notice how it hangs on login
+ use ubuntu with mesa < 9.1.4, notice how it hangs on login, and doesn't
+ with the fixed package
  
  [Regression Potential]
  
  small, these are limited to GT3, and two commits to make them apply
  
  --
  
  The GPU hangs on login if the system has a GT3 version of Intel Haswell.
  This is fixed in 9.1.4 and by backporting these four commits to 9.0.x:
  
  210f2794f5c4fedc7 i965: Turn brw->urb.vs_size and gs_size into local variables.
  d4311138e47224ace i965: Use a variable for the push constant size in kB.
  acff9c2bbf6cf4d9a i965: Update URB partitioning code for Haswell's GT3 variant.
  ed7fa63bbd375aaf6 i965: Add chipset limits for the Haswell GT3 variant.

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https://bugs.launchpad.net/bugs/1197316

Title:
  GPU hang with Haswell GT3

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