On 23-Aug-2006 Pyun YongHyeon wrote:
> On Tue, Aug 22, 2006 at 07:23:33PM +0400, Gleb Smirnoff wrote:
> I think that problem is different one. That problem happens when
> interrupt is shared with other devices. In these configuration
> em(4) misses lots of Tx completion interrupts and devices that
> use the shared interrupt stop working in the long run.
> It seems that debug.mpsafenet=0 mitigate the issue.
> > So I think there is a problem in FreeBSD or driver, not in chip.
> Agreed. If my memory serve me right it introduced right after
> switching to taskqueue(9) in interrupt handling(rev, 1.98).
I was wondering about something in connection with this. The em
interrupt handler is now a "fast" handler, but the interrupt is still
allocated with bus_alloc_resource_any(..., RF_SHAREABLE). If I
remember correctly, fast interrupts cannot be shared. So, isn't it
wrong to allocate the interrupt with RF_SHAREABLE?