Component Type: kbuild config

Description: Fujitsu-A64FX erratum E#010001: Undefined fault may occur wrongly

More info: This option adds a workaround for Fujitsu-A64FX erratum E#010001. On some variants of the Fujitsu-A64FX cores ver(1.0, 1.1), memory accesses may cause undefined fault (Data abort, DFSC=0b111111). This fault occurs under a specific hardware condition when a load/store instruction performs an address translation using: case-1 TTBR0_EL1 with TCR_EL1.NFD0 == 1. case-2 TTBR0_EL2 with TCR_EL2.NFD0 == 1. case-3 TTBR1_EL1 with TCR_EL1.NFD1 == 1. case-4 TTBR1_EL2 with TCR_EL2.NFD1 == 1. The workaround is to ensure these bits are clear in TCR_ELx. The workaround only affects the Fujitsu-A64FX. If unsure, say Y.

Build project: Kconfig (Linux kconfig) (Path: arch\arm64\Kconfig )

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