diff options
Diffstat (limited to 'arch/arm64/include/asm/irqflags.h')
| -rw-r--r-- | arch/arm64/include/asm/irqflags.h | 16 |
1 files changed, 7 insertions, 9 deletions
diff --git a/arch/arm64/include/asm/irqflags.h b/arch/arm64/include/asm/irqflags.h index ff328e5bbb75..b57b9b1e4344 100644 --- a/arch/arm64/include/asm/irqflags.h +++ b/arch/arm64/include/asm/irqflags.h @@ -12,15 +12,13 @@ /* * Aarch64 has flags for masking: Debug, Asynchronous (serror), Interrupts and - * FIQ exceptions, in the 'daif' register. We mask and unmask them in 'dai' + * FIQ exceptions, in the 'daif' register. We mask and unmask them in 'daif' * order: * Masking debug exceptions causes all other exceptions to be masked too/ - * Masking SError masks irq, but not debug exceptions. Masking irqs has no - * side effects for other flags. Keeping to this order makes it easier for - * entry.S to know which exceptions should be unmasked. - * - * FIQ is never expected, but we mask it when we disable debug exceptions, and - * unmask it at all other times. + * Masking SError masks IRQ/FIQ, but not debug exceptions. IRQ and FIQ are + * always masked and unmasked together, and have no side effects for other + * flags. Keeping to this order makes it easier for entry.S to know which + * exceptions should be unmasked. */ /* @@ -35,7 +33,7 @@ static inline void arch_local_irq_enable(void) } asm volatile(ALTERNATIVE( - "msr daifclr, #2 // arch_local_irq_enable", + "msr daifclr, #3 // arch_local_irq_enable", __msr_s(SYS_ICC_PMR_EL1, "%0"), ARM64_HAS_IRQ_PRIO_MASKING) : @@ -54,7 +52,7 @@ static inline void arch_local_irq_disable(void) } asm volatile(ALTERNATIVE( - "msr daifset, #2 // arch_local_irq_disable", + "msr daifset, #3 // arch_local_irq_disable", __msr_s(SYS_ICC_PMR_EL1, "%0"), ARM64_HAS_IRQ_PRIO_MASKING) : |