diff options
Diffstat (limited to 'arch/loongarch/Kconfig')
| -rw-r--r-- | arch/loongarch/Kconfig | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index 465759f6b0ed..21cc2e2d1f27 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -254,6 +254,9 @@ config AS_HAS_LSX_EXTENSION config AS_HAS_LASX_EXTENSION def_bool $(as-instr,xvld \$xr0$(comma)\$a0$(comma)0) +config AS_HAS_LBT_EXTENSION + def_bool $(as-instr,movscr2gr \$a0$(comma)\$scr0) + menu "Kernel type and options" source "kernel/Kconfig.hz" @@ -534,6 +537,18 @@ config CPU_HAS_LASX If unsure, say Y. +config CPU_HAS_LBT + bool "Support for the Loongson Binary Translation Extension" + depends on AS_HAS_LBT_EXTENSION + help + Loongson Binary Translation (LBT) introduces 4 scratch registers (SCR0 + to SCR3), x86/ARM eflags (eflags) and x87 fpu stack pointer (ftop). + Enabling this option allows the kernel to allocate and switch registers + specific to LBT. + + If you want to use this feature, such as the Loongson Architecture + Translator (LAT), say Y. + config CPU_HAS_PREFETCH bool default y |