On Fri, Dec 5, 2014 at 10:02 AM, Ryota Ozaki <[email protected]> wrote: > On Fri, Dec 5, 2014 at 7:07 AM, Mindaugas Rasiukevicius > <[email protected]> wrote: >> Ryota Ozaki <[email protected]> wrote: >>> Can we use pserialize for readers in hardware interrupt? >>> If we use splhigh instead of splsoftserial (pserialize_read_enter) >>> for critical sections of the readers, we can guarantee that >>> the readers don't touch a removed object anymore after >>> pserialize_perform. It this correct? >> >> It is correct, however we are trying to do less work in the hardware >> interrupt handlers by moving it to the software interrupts. > > Thanks. I think we need a gradual migration plan to the direction.
Anyway I wrote a patch of a softint-based interrupt handler for if_vioif: http://www.netbsd.org/~ozaki-r/vioif-softint-intr.diff It works well without problems, but I see performance degradation on L2 forwarding. So the feature is disabled by default. ozaki-r
