Bug 204803 - DMAR fault on dell machine LPC Controller
Summary: DMAR fault on dell machine LPC Controller
Status: NEW
Alias: None
Product: Drivers
Classification: Unclassified
Component: IOMMU (show other bugs)
Hardware: All Linux
: P1 normal
Assignee: drivers_iommu
URL:
Keywords:
Depends on:
Blocks: 178231
  Show dependency tree
 
Reported: 2019-09-09 19:01 UTC by Todd Brandt
Modified: 2020-08-05 15:33 UTC (History)
0 users

See Also:
Kernel Version: 5.0.0
Subsystem:
Regression: No
Bisected commit-id:

Attachments
issue.def (485 bytes, text/plain)
2019-09-09 19:01 UTC, Todd Brandt 		Details
otcpl-dell-p5510-xeon-1_mem.html (913.15 KB, text/html)
2019-09-09 19:05 UTC, Todd Brandt 		Details
otcpl-dell-p3520_mem.html (1.03 MB, text/html)
2019-09-09 19:08 UTC, Todd Brandt 		Details
issue.def (489 bytes, text/plain)
2020-08-05 15:33 UTC, Todd Brandt 		Details
Show Obsolete (1) Add an attachment (proposed patch, testcase, etc.)

Description Todd Brandt 2019-09-09 19:01:12 UTC 
Created attachment 284899 [details]
issue.def

Occurs in dmesg log for every suspend/resume mem run (S3).

[  173.528146] DMAR: DRHD: handling fault status reg 2
[  173.528150] DMAR: [INTR-REMAP] Request device [f0:1f.0] fault index 0 [fault reason 37] Blocked a compatibility format interrupt request

This one has been here for quite some time, since at least 5.0.0. It's just a warning printed in the dmesg log which doesn't appear to cause any performance or functional impairment. I'm adding this bug to track the issue with an issue.def file.
Comment 1 Todd Brandt 2019-09-09 19:05:30 UTC 
Created attachment 284901 [details]
otcpl-dell-p5510-xeon-1_mem.html
Comment 2 Todd Brandt 2019-09-09 19:08:31 UTC 
Created attachment 284903 [details]
otcpl-dell-p3520_mem.html
Comment 3 Todd Brandt 2020-08-05 15:33:51 UTC 
Created attachment 290781 [details]
issue.def
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