diff options
Diffstat (limited to 'arch/arm/Kconfig')
| -rw-r--r-- | arch/arm/Kconfig | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/arch/arm/Kconfig b/arch/arm/Kconfig index 232f0c758252..e3956042892c 100644 --- a/arch/arm/Kconfig +++ b/arch/arm/Kconfig @@ -1040,6 +1040,18 @@ config PL310_ERRATA_588369 is not correctly implemented in PL310 as clean lines are not invalidated as a result of these operations. Note that this errata uses Texas Instrument's secure monitor api. + +config ARM_ERRATA_720789 + bool "ARM errata: TLBIASIDIS and TLBIMVAIS operations can broadcast a faulty ASID" + depends on CPU_V7 && SMP + help + This option enables the workaround for the 720789 Cortex-A9 (prior to + r2p0) erratum. A faulty ASID can be sent to the other CPUs for the + broadcasted CP15 TLB maintenance operations TLBIASIDIS and TLBIMVAIS. + As a consequence of this erratum, some TLB entries which should be + invalidated are not, resulting in an incoherency in the system page + tables. The workaround changes the TLB flushing routines to invalidate + entries regardless of the ASID. endmenu source "arch/arm/common/Kconfig" |