pipe error 0x00000080 not handled
Submitted by Olaf Hering
Assigned to Intel GFX Bugs mailing list
Created attachment 142851
Dell Latitude E7470, "Skylake GT2 [HD Graphics 520]".
With kernels later than linux-4.4 (have not checked when it started), dmesg is flooded with messages like this:
[drm:gen8_irq_handler [i915]] ERROR Fault errors on pipe A: 0x00000080
This happens when the system is booted as Xen dom0. IMO everything is working fine, no issues to report beside the flooding of syslog. The used desktop environment makes no difference, nor makes the used version of SLE or Leap or Tumbleweed any difference.
The actual things I want to see fixed are:
What is bit (1 << 3)? There is no constant defined for this issue.
Why do DRM_ERROR() and related helpers not use printk_ratelimited()?
The use can not do anything about the issue anyway, other than reporting it, so a single message would be fine.
And if you feel like it: what needs to be done to get this driver fixed for a Xen dom0?
Attachment 142851, "dmesg-4.12.14-lp150.12.28-default.txt":