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List:       fwts-devel
Subject:    [PATCH][V4] klog.json: add a "Unable ... IOMMU perf counter" message
From:       Alex Hung <alex.hung () canonical ! com>
Date:       2020-04-28 18:41:49
Message-ID: 20200428184149.293255-1-alex.hung () canonical ! com
[Download RAW message or body]

This message shows performance counters are not supported on AMD IOMMU
hardware.

More info @ https://lore.kernel.org/lkml/20180727102710.GA6738@8bytes.org/

Reported-by: Paul Menzel <pmenzel@molgen.mpg.de>
Signed-off-by: Alex Hung <alex.hung@canonical.com>
---

[V2] update advise and commit comments
[V3] change spec -> specifications
[V4] should not be -> should be

 data/klog.json | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/data/klog.json b/data/klog.json
index 15043658..cdb93554 100644
--- a/data/klog.json
+++ b/data/klog.json
@@ -2697,6 +2697,13 @@ atform Communications Channel Table (PCCT) and find the PCC \
                subspace communicati
     "advice": "BIOS setup is configured to enable IOMMU, but BIOS lacks IVRS table \
that is describing which is the address of IOMMU",  "label": "KlogAmdIommuNoIVRS"
   },
+  {
+    "compare_mode": "string",
+    "log_level": "LOG_LEVEL_MEDIUM",
+    "pattern": "Unable to read/write to IOMMU perf counter",
+    "advice": "AMD IOMMU performance counter is inaccessible and public \
specifications do not have information on how it should be supported", +    "label": \
"KlogAmdIommuPCNotSupported" +  },
   {
     "compare_mode": "string",
     "log_level": "LOG_LEVEL_HIGH",
-- 
2.25.1


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