Newest Loongson-3 processors have moved to use LoongArch architecture. Sadly, the LL/SC issue is still existing on both latest Loongson-3 processors using MIPS64 (Loongson-3A4000) and LoongArch (Loongson-3A5000). As it's very unlikely there will be new Loongson-3 processors using MIPS64, let's stop people from false hoping. Signed-off-by: Xi Ruoyao <xry111@xxxxxxxxxxxxxxxx> Cc: Huacai Chen <chenhuacai@xxxxxxxxxx> --- Huacai: how's the status of LL/SC issue on Loongson-2K? If the issue exists on it as well, we can just force CPU_LOONGSON3_WORKAROUNDS when CONFIG_CPU_LOONGSON64 and CONFIG_SMP are both selected. arch/mips/Kconfig | 9 ++------- 1 file changed, 2 insertions(+), 7 deletions(-) diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig index 6dfb27d531dd..ff5f344a371e 100644 --- a/arch/mips/Kconfig +++ b/arch/mips/Kconfig @@ -1433,19 +1433,14 @@ config LOONGSON3_ENHANCEMENT new Loongson-3 machines only, please say 'Y' here. config CPU_LOONGSON3_WORKAROUNDS - bool "Old Loongson-3 LLSC Workarounds" + bool "Loongson-3 LLSC Workarounds" default y if SMP depends on CPU_LOONGSON64 help Loongson-3 processors have the llsc issues which require workarounds. Without workarounds the system may hang unexpectedly. - Newer Loongson-3 will fix these issues and no workarounds are needed. - The workarounds have no significant side effect on them but may - decrease the performance of the system so this option should be - disabled unless the kernel is intended to be run on old systems. - - If unsure, please say Y. + Say Y, unless you know what you are doing. config CPU_LOONGSON3_CPUCFG_EMULATION bool "Emulate the CPUCFG instruction on older Loongson cores" -- 2.33.0
