Date: Wed, 12 Apr 2006 23:28:43 +0200 From: Christian Brueffer <brueffer@FreeBSD.org> To: Warner Losh <imp@FreeBSD.org> Cc: cvs-src@FreeBSD.org, src-committers@FreeBSD.org, cvs-all@FreeBSD.org Subject: Re: cvs commit: src/sys/dev/pccbb pccbb.c Message-ID: <20060412212843.GH1258@haakonia.hitnet.RWTH-Aachen.DE> In-Reply-To: <200603300425.k2U4PjJH099559@repoman.freebsd.org> References: <200603300425.k2U4PjJH099559@repoman.freebsd.org>
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--oyqLL/JqMvClXZi1 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Thu, Mar 30, 2006 at 04:25:45AM +0000, Warner Losh wrote: > imp 2006-03-30 04:25:45 UTC >=20 > FreeBSD src repository >=20 > Modified files: > sys/dev/pccbb pccbb.c=20 > Log: > On some laptops, under very high loads, the socket event register read > in the ISR doesn't read the actual socket event register, but instead > reads garbage (usually 0xffffffff, but other times other things). > This totally violates the PCI spec, but happens rarely enough that a > workaround is in order. This adds one test when we have a real > interrupt to service (which is very rare), and doesn't affect the > usualy 'nothing to see here' case at all. > =20 > Problem reported by many, but sam@ gave me this workaround after > diagnosing the problem. > =20 This breaks pccard/cardbus support on my Thinkpad T41p (confirmed by backing this change out). With this change, I just get an "Interrupt storm detected on irq 5; throttling" message. What kind of debug info can I provide? - Christian --=20 Christian Brueffer chris@unixpages.org brueffer@FreeBSD.org GPG Key: http://people.freebsd.org/~brueffer/brueffer.key.asc GPG Fingerprint: A5C8 2099 19FF AACA F41B B29B 6C76 178C A0ED 982D --oyqLL/JqMvClXZi1 Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.2.2 (FreeBSD) iD8DBQFEPXELbHYXjKDtmC0RAg2VAKDljmb/4ISCQfA2DOe5nV0Omqw+oACgpvwg xmq+xoxRUlnk8nIqFgUv9gQ= =3RwI -----END PGP SIGNATURE----- --oyqLL/JqMvClXZi1--
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