New drm messages being logged

[Kevin Oberman]

I have been seeing a number of drm errors since the last drm MFC to
10-Stable. None seems to have caused any problems, but I wanted to report
them, just in case they are of interest. The "Attempting to unbind pinned
buffer" errors really caught my attention as there are a lot of thm and I
had never seen them before yesterday.

FreeBSD rogue 10.1-STABLE FreeBSD 10.1-STABLE #0 r280729: Thu Mar 26
22:49:21 PDT 2015     root at rogue:/usr/obj/usr/src/sys/GENERIC  amd64
All ports are current. I am enabling rc6 power management:
drm.i915.enable_rc6=5
Mar 27 10:41:19 rogue kernel: error: [drm:pid1242:gen6_sanitize_pm] *ERROR*
Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected 1a000000,
was 12000000
Mar 27 20:06:35 rogue kernel: error: [drm:pid3355:gen6_sanitize_pm] *ERROR*
Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected 1a000000,
was 12060000
Mar 31 08:48:13 rogue kernel: error: [drm:pid5:i915_gem_object_unbind]
*ERROR* Attempting to unbind pinned buffer
Mar 31 08:48:13 rogue last message repeated 10 times
Mar 31 15:38:02 rogue kernel: error: [drm:pid1242:gen6_sanitize_pm] *ERROR*
Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected 1a0d0000,
was 1a000000
Mar 31 15:49:56 rogue kernel: error: [drm:pid1242:gen6_sanitize_pm] *ERROR*
Power management discrepancy: GEN6_RP_INTERRUPT_LIMITS expected 1a0d0000,
was 1a000000
Apr  1 08:57:52 rogue kernel: error: [drm:pid5:i915_gem_object_unbind]
*ERROR* Attempting to unbind pinned buffer
Apr  1 08:57:52 rogue last message repeated 9 times
Apr  1 08:59:42 rogue kernel: error: [drm:pid5:i915_gem_object_unbind]
*ERROR* Attempting to unbind pinned buffer
Apr  1 09:01:34 rogue kernel: error: [drm:pid5:i915_gem_object_unbind]
*ERROR* Attempting to unbind pinned buffer
Apr  1 09:01:54 rogue last message repeated 20 times
Apr  1 09:04:04 rogue last message repeated 51 times
Apr  1 09:09:36 rogue last message repeated 53 times
Apr  1 09:17:10 rogue last message repeated 11 times
--
Kevin Oberman, Network Engineer, Retired
E-mail: rkoberman at gmail.com