diff options
| -rw-r--r-- | arch/sparc/include/asm/irqflags_64.h | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/sparc/include/asm/irqflags_64.h b/arch/sparc/include/asm/irqflags_64.h index a16e94c..bfa1ea4 100644 --- a/arch/sparc/include/asm/irqflags_64.h +++ b/arch/sparc/include/asm/irqflags_64.h @@ -80,6 +80,13 @@ static inline unsigned long __raw_local_irq_save(void) /* Disable interrupts to PIL_NORMAL_MAX unless we already * are using PIL_NMI, in which case PIL_NMI is retained. + * + * The only values we ever program into the %pil are 0, + * PIL_NORMAL_MAX and PIL_NMI. + * + * Since PIL_NMI is the largest %pil value and all bits are + * set in it (0xf), it doesn't matter what PIL_NORMAL_MAX + * actually is. */ __asm__ __volatile__( "rdpr %%pil, %0\n\t" |
