From: "Lu, Yinghai" <yinghai.lu@amd.com>
To: ebiederm@xmission.com
Cc: "Andi Kleen" <ak@suse.de>, "Andrew Morton" <akpm@osdl.org>,
linux-kernel@vger.kernel.org,
"Luigi Genoni" <luigi.genoni@pirelli.com>,
"Ingo Molnar" <mingo@elte.hu>,
"Natalie Protasevich" <protasnb@gmail.com>
Subject: RE: [PATCH 2/2] x86_64 irq: Handle irqs pending in IRR during irq migration.
Date: Mon, 5 Feb 2007 15:33:36 -0800 [thread overview]
Message-ID: <5986589C150B2F49A46483AC44C7BCA4907417@ssvlexmb2.amd.com> (raw)
-----Original Message-----
From: ebiederm@xmission.com [mailto:ebiederm@xmission.com]
Sent: Monday, February 05, 2007 3:03 PM
>Nope. irq routines are a stack. if apic_in_service_vector could return
>the wrong value. ack_APIC_irq() which use the same information would
>acknowledge the wrong irq. If there was actually any danger of
>mis-computing that information I would just pass it from the interrupt
>service routine stash it in a per cpu variable and then read it out.
>But the apic already has registers doing that, so I was lazy and used
>what was available. It should be the common case that we need that
>information.
OK.
I wonder if current kernel support different cpu handle irq request for
different device at the same time.
YH
next reply other threads:[~2007-02-05 23:59 UTC|newest]
Thread overview: 26+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-02-05 23:33 Lu, Yinghai [this message]
-- strict thread matches above, loose matches on Subject: below --
2007-02-05 20:54 [PATCH 2/2] x86_64 irq: Handle irqs pending in IRR during irq migration Lu, Yinghai
2007-02-05 23:03 ` Eric W. Biederman
2007-02-05 20:11 Lu, Yinghai
2007-02-05 20:37 ` Eric W. Biederman
2007-02-05 19:29 Lu, Yinghai
2007-02-05 19:59 ` Eric W. Biederman
[not found] <200701221116.13154.luigi.genoni@pirelli.com>
[not found] ` <200702021848.55921.luigi.genoni@pirelli.com>
2007-02-02 18:02 ` System crash after "No irq handler for vector" linux 2.6.19 Eric W. Biederman
[not found] ` <200702021905.39922.luigi.genoni@pirelli.com>
2007-02-03 0:31 ` [PATCH 1/2] x86_64 irq: Simplfy __assign_irq_vector Eric W. Biederman
2007-02-03 0:35 ` [PATCH 2/2] x86_64 irq: Handle irqs pending in IRR during irq migration Eric W. Biederman
2007-02-03 1:05 ` Andrew Morton
2007-02-03 1:39 ` Eric W. Biederman
2007-02-03 2:01 ` Andrew Morton
2007-02-03 7:32 ` Arjan van de Ven
2007-02-03 7:55 ` Eric W. Biederman
2007-02-03 14:31 ` l.genoni
2007-02-03 10:01 ` Andi Kleen
2007-02-03 10:22 ` Eric W. Biederman
2007-02-03 10:26 ` Andi Kleen
2007-02-06 7:36 ` Ingo Molnar
2007-02-06 8:57 ` Eric W. Biederman
[not found] ` <200702061012.25910.luigi.genoni@pirelli.com>
2007-02-06 22:05 ` Eric W. Biederman
2007-02-06 22:16 ` Eric W. Biederman
2007-02-06 22:25 ` Ingo Molnar
2007-02-07 2:33 ` Eric W. Biederman
2007-02-08 11:48 ` Eric W. Biederman
2007-02-08 20:19 ` Eric W. Biederman
2007-02-09 6:40 ` Eric W. Biederman
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