Date: Sat, 15 Jan 2005 13:15:59 +0300 From: "Peter Trifonov" <pvtrifonov@mail.ru> To: "'John Baldwin'" <jhb@FreeBSD.org>, <freebsd-smp@FreeBSD.org> Cc: kris@obsecurity.org Subject: RE: Lost interrupts on SMP systems Message-ID: <E1CpkuT-000IcF-00.pvtrifonov-mail-ru@mx2.mail.ru> In-Reply-To: <200501141418.18587.jhb@FreeBSD.org>
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Hello John, > > > workaround for an undocumented errata in at least some older I/O > > > APICs where a level triggered interrupt can accidentally be > > > delivered as edge triggered and end up not being properly > > > acknowledged. However, you don't have any level triggered > > > interrupts, so I'm not sure that is applicable. > More interrupt load that way, which would indicate maybe the bug Linux > tries to work around except that your intpins are edge triggered. :( After doing some google search I have found a number of somewhat similar problem reports/patches related to this family of HP boxes (Vectra XU 6/200). Maybe that is what you were writing about, sorry in such case. http://www.sslug.dk/emailarkiv/teknik/2000_07/msg00306.html http://www.mail-archive.com/linux-kernel@vger.kernel.org/msg34195.html With best regards, P. Trifonov
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