Navigation: Linux Kernel Driver DataBase - web LKDDB: Main index - A index

CONFIG_ARM64_ERRATUM_2139208: Neoverse-N2: 2139208: workaround TRBE overwriting trace data in FILL mode

General informations

The Linux kernel configuration item CONFIG_ARM64_ERRATUM_2139208:

Help text

This option adds the workaround for ARM Neoverse-N2 erratum 2139208.

Affected Neoverse-N2 cores could overwrite up to 3 cache lines of trace data at the base of the buffer (pointed to by TRBASER_EL1) in FILL mode in the event of a WRAP event.

Work around the issue by always making sure we move the TRBPTR_EL1 by 256 bytes before enabling the buffer and filling the first 256 bytes of the buffer with ETM ignore packets upon disabling.

If unsure, say Y.

Hardware

LKDDb

Raw data from LKDDb:

Sources

This page is automaticly generated with free (libre, open) software lkddb(see lkddb-sources).

The data is retrived from:

Automatic links from Google (and ads)

Custom Search

Popular queries:

Navigation: Linux Kernel Driver DataBase - web LKDDB: main index - A index

Automatically generated (in year 2024). See also LKDDb sources on GitLab