From: "Michael Meduna" <michael.meduna@bull.com>
To: linux-ia64@vger.kernel.org
Subject: Re: [Linux-ia64] PATCH redirectable IRQs
Date: Fri, 12 Sep 2003 01:36:39 +0000 [thread overview]
Message-ID: <marc-linux-ia64-106333061218151@msgid-missing> (raw)
In-Reply-To: <marc-linux-ia64-105590698805756@msgid-missing>
Erich, I have already reviewed the referenced document. I understand how to
set lowest priority delivery mode or fixed delivery mode for a specific IRQ.
What I would like to do is set CPU 0 in lowest priority delivery mode for
all IRQs but then, have the ability to permanently disable interrupts for
specific CPUs.
For example: lets say I have a system with 8 host CPUs. I create a
processor set that will contain a pool of CPUs (0-3). I create another set
of processor sets (4 of them) that will contain processors 4-7. All IRQs
are set to CPU 0 in lowest priority delivery mode. I do not want processors
4-7 to take an interrupt. However, I do want interrupts to be spread across
processors 0-3. Is there a way to set the XTP register such that processors
4-7 will never take an interrupt?
prev parent reply other threads:[~2003-09-12 1:36 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2002-01-07 14:28 [Linux-ia64] PATCH redirectable IRQs Erich Focht
2002-01-07 16:31 ` Andreas Schwab
2002-01-07 17:12 ` David Mosberger
2002-01-07 17:16 ` Erich Focht
2002-01-08 16:35 ` Erich Focht
2002-01-10 21:24 ` David Mosberger
2003-09-10 18:26 ` Michael.Meduna
2003-09-11 11:33 ` Erich Focht
2003-09-12 1:36 ` Michael Meduna [this message]
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