i386/75441: fxp device timeout

[Peter Trifonov]

The following reply was made to PR i386/75441; it has been noted by GNATS.

From: Peter Trifonov <petert at dcn.infos.ru>
To: freebsd-gnats-submit at FreeBSD.org, petert at dcn.infos.ru
Cc:  
Subject: Re: i386/75441: fxp device timeout
Date: Thu, 30 Dec 2004 10:44:25 +0300

 I have replaced fxp0 and fxp1 NICs with 3Com network cards=20
 Now I have xl0 utilizing IRQ 10 and xl1 and xl2 sharing IRQ 11
 After this "fxp{0,1} device timeout" messages changed to "xl{1,2} watchdog=
 =20
 timeout". xl0 still works fine.  Again, xl1 and xl2 can be brought back to=
 =20
 life by doing ifconfig xl{1,2} down and ifconfig xl{1,2} up.
 =46rom this I guess that the problem is not related to fxp or xl drivers, b=
 ut to=20
 the kernel interrupt management system. It seems that on SMP systems IRQ=20
 sharing may cause some of the interrupts to be lost.