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Diffstat (limited to 'arch/arm/mm/Kconfig')
| -rw-r--r-- | arch/arm/mm/Kconfig | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig index cbab5c5..ebaee8e 100644 --- a/arch/arm/mm/Kconfig +++ b/arch/arm/mm/Kconfig @@ -687,6 +687,32 @@ config SWP_EMULATE If unsure, say Y. +config IDIV_EMULATE + bool "Emulate SDIV/UDIV instructions" + depends on !CPU_USE_DOMAINS && CPU_V7 + select HAVE_PROC_CPU if PROC_FS + default y if SMP + help + + The Virtualization Extensions introduce the requirement for an + ARMv7-A implementation to include SDIV and UDIV. Any + implementation of the Virtualization Extensions must include + the SDIV and UDIV instructions in the Thumb and ARM + instruction sets. + + In an ARMv7-A implementation that does not include the + Virtualization Extensions, it is IMPLEMENTATION DEFINED whether: + * SDIV and UDIV are not implemented + * SDIV and UDIV are implemented only in the Thumb instruction set + * SDIV and UDIV are implemented in the Thumb and ARM + instruction sets. + + This option allows to handle exeptions due to unimplemented + SDIV and UDIV instructions in ARM and Thumb modes. + + If unsure, say Y. + + config CPU_BIG_ENDIAN bool "Build big-endian kernel" depends on ARCH_SUPPORTS_BIG_ENDIAN |