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

CONFIG_ARM_ERRATA_430973: ARM errata: Stale prediction on replaced interworking branch

General informations

The Linux kernel configuration item CONFIG_ARM_ERRATA_430973:

Help text

This option enables the workaround for the 430973 Cortex-A8 r1p* erratum. If a code sequence containing an ARM/Thumb interworking branch is replaced with another code sequence at the same virtual address, whether due to self-modifying code or virtual to physical address re-mapping, Cortex-A8 does not recover from the stale interworking branch prediction. This results in Cortex-A8 executing the new code sequence in the incorrect ARM or Thumb state. The workaround enables the BTB/BTAC operations by setting ACTLR.IBE and also flushes the branch target cache at every context switch. Note that setting specific bits in the ACTLR register may not be available in non-secure mode.



Raw data from LKDDb:


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