From: Jamie Lokier <jamie@shareable.org>
To: Ross Dickson <ross@datscreative.com.au>
Cc: Len Brown <len.brown@intel.com>,
christian.kroener@tu-harburg.de, linux-kernel@vger.kernel.org,
"Maciej W. Rozycki" <macro@ds2.pg.gda.pl>
Subject: Re: IO-APIC on nforce2 [PATCH]
Date: Wed, 14 Apr 2004 07:30:17 +0100 [thread overview]
Message-ID: <20040414063017.GA7790@mail.shareable.org> (raw)
In-Reply-To: <200404141502.14023.ross@datscreative.com.au>
Ross Dickson wrote:
> The clock skew is an interesting one, I think the clock uses tsc if available
> to interpolate between timer ints and if so should it not also be used to
> validate the timer ints in case of noise? Apparently the clock speeds up not
> slows down in those cases?
If the clock is speeding up due to spurious extra timer interrupts,
how about reading the timer chip to validate the interrupts? Doesn't
sound unreasonable to me :)
The problem with using the tsc is that the tsc frequency isn't
constant on some systems. If it slows down, it would make valid timer
interrupts appear to be spurious.
-- Jamie
next prev parent reply other threads:[~2004-04-14 6:30 UTC|newest]
Thread overview: 84+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-04-13 1:17 IO-APIC on nforce2 Ross Dickson
2004-04-13 4:01 ` really bensoo_at_soo_dot_com
2004-04-13 4:55 ` Ross Dickson
2004-04-13 17:22 ` Christian Kröner
2004-04-13 21:18 ` really bensoo_at_soo_dot_com
2004-04-14 4:24 ` really bensoo_at_soo_dot_com
2004-04-13 5:08 ` Len Brown
2004-04-13 7:03 ` Ross Dickson
2004-04-13 13:46 ` Maciej W. Rozycki
2004-04-14 1:02 ` IO-APIC on nforce2 [PATCH] Len Brown
2004-04-14 5:02 ` Ross Dickson
2004-04-14 6:30 ` Jamie Lokier [this message]
2004-04-14 10:37 ` Maciej W. Rozycki
2004-04-15 19:28 ` Len Brown
2004-04-14 19:57 ` Christian Kröner
2004-04-15 0:17 ` Len Brown
2004-04-15 1:48 ` Ross Dickson
2004-04-15 17:09 ` Christian Kröner
2004-04-15 15:10 ` IO-APIC on nforce2 [PATCH] + [PATCH] for nmi_debug=1 + [PATCH] for idle=C1halt, 2.6.5 Ross Dickson
2004-04-15 20:17 ` Len Brown
2004-04-15 21:04 ` Craig Bradney
2004-04-21 20:22 ` Len Brown
2004-04-21 20:33 ` Ian Kumlien
2004-04-21 20:45 ` Craig Bradney
2004-04-21 21:28 ` Prakash K. Cheemplavam
2004-04-21 22:41 ` Len Brown
2004-04-22 7:26 ` Prakash K. Cheemplavam
2004-04-22 14:58 ` Len Brown
2004-04-22 8:45 ` Craig Bradney
2004-04-22 15:03 ` Len Brown
2004-04-22 20:50 ` Craig Bradney
2004-04-22 8:50 ` Arjen Verweij
2004-04-22 16:39 ` Jesse Allen
2004-04-22 17:21 ` Len Brown
2004-04-22 21:29 ` Len Brown
2004-04-23 8:48 ` Prakash K. Cheemplavam
2004-04-23 9:01 ` Arjen Verweij
2004-04-23 9:08 ` Prakash K. Cheemplavam
2004-04-23 9:11 ` Prakash K. Cheemplavam
2004-04-23 12:18 ` Maciej W. Rozycki
2004-04-27 7:57 ` ACPI broken on nforce2? Prakash K. Cheemplavam
2004-04-26 11:41 ` IO-APIC on nforce2 [PATCH] + [PATCH] for nmi_debug=1 + [PATCH] for idle=C1halt, 2.6.5 Ross Dickson
2004-04-27 17:02 ` Arjen Verweij
2004-04-27 17:35 ` Ian Kumlien
2004-04-27 18:00 ` Len Brown
2004-04-27 18:24 ` Arjen Verweij
2004-04-27 18:51 ` Jussi Laako
2004-04-28 11:33 ` Ross Dickson
2004-04-28 20:59 ` Jesse Allen
2004-04-29 11:44 ` Ross Dickson
2004-04-29 11:54 ` Maciej W. Rozycki
2004-04-29 12:00 ` Jamie Lokier
2004-04-29 12:26 ` Maciej W. Rozycki
2004-04-29 11:57 ` Jamie Lokier
2004-04-29 12:16 ` Craig Bradney
2004-04-29 20:24 ` Jesse Allen
2004-04-29 20:31 ` Prakash K. Cheemplavam
2004-05-03 20:45 ` Jesse Allen
2004-05-17 15:26 ` Prakash K. Cheemplavam
2004-05-17 19:32 ` Craig Bradney
2004-05-17 19:37 ` Prakash K. Cheemplavam
2004-05-17 19:57 ` Craig Bradney
2004-04-27 21:31 ` Prakash K. Cheemplavam
2004-04-28 11:26 ` Prakash K. Cheemplavam
2004-05-01 6:51 ` Prakash K. Cheemplavam
2004-04-15 21:56 ` Arjen Verweij
2004-04-15 15:21 ` IO-APIC on nforce2 [PATCH] Zwane Mwaikambo
-- strict thread matches above, loose matches on Subject: below --
2004-04-14 21:01 Christian Kröner
2004-04-15 0:35 ` Peter Clifton
2004-04-15 0:29 ` Craig Bradney
2004-04-15 0:41 ` Ross Dickson
2004-04-15 18:33 Allen Martin
2004-04-15 19:20 ` Craig Bradney
2004-04-15 19:50 ` Len Brown
2004-04-16 8:27 ` Jamie Lokier
2004-04-22 4:00 ` Len Brown
2004-04-22 13:22 ` Maciej W. Rozycki
2004-04-22 13:53 ` Christian Kröner
2004-04-22 15:27 ` Len Brown
2004-04-22 15:40 ` Maciej W. Rozycki
2004-04-22 16:15 ` Christian Kröner
2004-04-16 16:41 Allen Martin
2004-04-23 1:23 Allen Martin
2004-04-23 15:39 ` Maciej W. Rozycki
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