diff --git a/arch/arm64/include/asm/irqflags.h b/arch/arm64/include/asm/irqflags.h index aa11943b850213c77a32f87c1ce22c8aac87bf83..b2fcfbc51ecc4b0eaef6e4b20efd0f7afd2a9efd 100644 --- a/arch/arm64/include/asm/irqflags.h +++ b/arch/arm64/include/asm/irqflags.h @@ -56,6 +56,9 @@ static inline void arch_local_irq_disable(void) #define local_fiq_enable() asm("msr daifclr, #1" : : : "memory") #define local_fiq_disable() asm("msr daifset, #1" : : : "memory") +#define local_async_enable() asm("msr daifclr, #4" : : : "memory") +#define local_async_disable() asm("msr daifset, #4" : : : "memory") + /* * Save the current interrupt enable state. */ diff --git a/arch/arm64/kernel/setup.c b/arch/arm64/kernel/setup.c index 0bc5e4cbc017674db8785f434fa3cff0b30d4c56..bd9bbd0e44edf176c262cfad0e32b9f62599d4b7 100644 --- a/arch/arm64/kernel/setup.c +++ b/arch/arm64/kernel/setup.c @@ -205,6 +205,11 @@ u64 __cpu_logical_map[NR_CPUS] = { [0 ... NR_CPUS-1] = INVALID_HWID }; void __init setup_arch(char **cmdline_p) { + /* + * Unmask asynchronous aborts early to catch possible system errors. + */ + local_async_enable(); + setup_processor(); setup_machine_fdt(__fdt_pointer); diff --git a/arch/arm64/kernel/smp.c b/arch/arm64/kernel/smp.c index a5aeefab03c3e9cd2c0a241d4f4632bb0933b31f..a0c2ca602cf85bebc6e7996454adb9e47fe9456d 100644 --- a/arch/arm64/kernel/smp.c +++ b/arch/arm64/kernel/smp.c @@ -160,6 +160,7 @@ asmlinkage void secondary_start_kernel(void) local_irq_enable(); local_fiq_enable(); + local_async_enable(); /* * OK, it's off to the idle thread for us