Hi, The macro local_irq_save(x) is defined as the following three instructions: 1: pushfl 2: popl x 3: cli It should be possible that a interrupt happens before instruction 3 but after instruction 1. If the interrupt handler change the EFLAGS register, the local_irq_save(x) will save the old value to x. How this problem is avoided in the kernel? Regards, Wenhua -- To unsubscribe from this list: send an email with "unsubscribe kernelnewbies" to ecartis@xxxxxxxxxxxx Please read the FAQ at http://kernelnewbies.org/FAQ
