diff options
Diffstat (limited to 'arch/loongarch/Kconfig')
| -rw-r--r-- | arch/loongarch/Kconfig | 51 |
1 files changed, 43 insertions, 8 deletions
diff --git a/arch/loongarch/Kconfig b/arch/loongarch/Kconfig index 1944bae2f31c..72b614429c37 100644 --- a/arch/loongarch/Kconfig +++ b/arch/loongarch/Kconfig @@ -164,14 +164,6 @@ config 32BIT config 64BIT def_bool y -config CPU_HAS_FPU - bool - default y - -config CPU_HAS_PREFETCH - bool - default y - config GENERIC_BUG def_bool y depends on BUG @@ -247,6 +239,12 @@ config AS_HAS_EXPLICIT_RELOCS config AS_HAS_FCSR_CLASS def_bool $(as-instr,movfcsr2gr \$t0$(comma)\$fcsr0) +config AS_HAS_LSX_EXTENSION + def_bool $(as-instr,vld \$vr0$(comma)\$a0$(comma)0) + +config AS_HAS_LASX_EXTENSION + def_bool $(as-instr,xvld \$xr0$(comma)\$a0$(comma)0) + menu "Kernel type and options" source "kernel/Kconfig.hz" @@ -487,6 +485,43 @@ config ARCH_STRICT_ALIGN to run kernel only on systems with h/w unaligned access support in order to optimise for performance. +config CPU_HAS_FPU + bool + default y + +config CPU_HAS_LSX + bool "Support for the Loongson SIMD Extension" + depends on AS_HAS_LSX_EXTENSION + help + Loongson SIMD Extension (LSX) introduces 128 bit wide vector registers + and a set of SIMD instructions to operate on them. When this option + is enabled the kernel will support allocating & switching LSX + vector register contexts. If you know that your kernel will only be + running on CPUs which do not support LSX or that your userland will + not be making use of it then you may wish to say N here to reduce + the size & complexity of your kernel. + + If unsure, say Y. + +config CPU_HAS_LASX + bool "Support for the Loongson Advanced SIMD Extension" + depends on CPU_HAS_LSX + depends on AS_HAS_LASX_EXTENSION + help + Loongson Advanced SIMD Extension (LASX) introduces 256 bit wide vector + registers and a set of SIMD instructions to operate on them. When this + option is enabled the kernel will support allocating & switching LASX + vector register contexts. If you know that your kernel will only be + running on CPUs which do not support LASX or that your userland will + not be making use of it then you may wish to say N here to reduce + the size & complexity of your kernel. + + If unsure, say Y. + +config CPU_HAS_PREFETCH + bool + default y + config KEXEC bool "Kexec system call" select KEXEC_CORE |