On Wed, May 29, 2013 at 10:16:45AM +0300, Konstantin Belousov wrote:
> Well, if you and I are right, the minimal patch should be
>
> diff --git a/sys/kern/kern_intr.c b/sys/kern/kern_intr.c
> index 8d63c9b..7c21015 100644
> --- a/sys/kern/kern_intr.c
> +++ b/sys/kern/kern_intr.c
> @@ -1349,7 +1349,7 @@ ithread_loop(void *arg)
> * we are running, it will set it_need to note that we
> * should make another pass.
> */
> - while (ithd->it_need) {
> + while (atomic_load_acq_int(&ithd->it_need)) {
> /*
> * This might need a full read and write barrier
> * to make sure that this write posts before any
> So, was it tested ? If yes, did the patch helped ?
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