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Diffstat (limited to 'arch/arc/Kconfig')
| -rw-r--r-- | arch/arc/Kconfig | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arc/Kconfig b/arch/arc/Kconfig index c9f30f4763ab..a5459698f0ee 100644 --- a/arch/arc/Kconfig +++ b/arch/arc/Kconfig @@ -406,6 +406,14 @@ config ARC_HAS_DIV_REM bool "Insn: div, divu, rem, remu" default y +config ARC_HAS_ACCL_REGS + bool "Reg Pair ACCL:ACCH (FPU and/or MPY > 6)" + default n + help + Depending on the configuration, CPU can contain accumulator reg-pair + (also referred to as r58:r59). These can also be used by gcc as GPR so + kernel needs to save/restore per process + endif # ISA_ARCV2 endmenu # "ARC CPU Configuration" @@ -436,6 +444,7 @@ config ARC_HAS_PAE40 bool "Support for the 40-bit Physical Address Extension" default n depends on ISA_ARCV2 + select HIGHMEM help Enable access to physical memory beyond 4G, only supported on ARC cores with 40 bit Physical Addressing support |