All of lore.kernel.org
 help / color / mirror / Atom feed
From: ebiederm@xmission.com (Eric W. Biederman)
To: "Lu, Yinghai" <yinghai.lu@amd.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, 05 Feb 2007 12:59:18 -0700	[thread overview]
Message-ID: <m1r6t4wf3d.fsf@ebiederm.dsl.xmission.com> (raw)
In-Reply-To: <5986589C150B2F49A46483AC44C7BCA4907414@ssvlexmb2.amd.com> (Yinghai Lu's message of "Mon, 5 Feb 2007 11:29:35 -0800")

"Lu, Yinghai" <yinghai.lu@amd.com> writes:

> Eric,
>
> How about let apic_hangle_pending_vector take the irq too?

We can't compute the vector by reading the hardware registers after
we have acknowledged the irq.

I hope that was the answer you were looking for I'm not quite certain
what you mean by take.

> I wonder if there any chance that you have two IRQ_MOVE_PENDING?

I'm not quite certain what you are asking on the face of it there
is one bit per irq so it is impossible.

I don't think we can get into any trouble we don't let a vector be
reused on a cpu until we know it isn't in irr.  So even if things
come in highly out of order the should still function.

I also have seen irqs migrate on nearly every irq received.

Eric

  reply	other threads:[~2007-02-05 20:00 UTC|newest]

Thread overview: 26+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-02-05 19:29 [PATCH 2/2] x86_64 irq: Handle irqs pending in IRR during irq migration Lu, Yinghai
2007-02-05 19:59 ` Eric W. Biederman [this message]
  -- strict thread matches above, loose matches on Subject: below --
2007-02-05 23:33 Lu, Yinghai
2007-02-05 20:54 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
     [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

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=m1r6t4wf3d.fsf@ebiederm.dsl.xmission.com \
    --to=ebiederm@xmission.com \
    --cc=ak@suse.de \
    --cc=akpm@osdl.org \
    --cc=linux-kernel@vger.kernel.org \
    --cc=luigi.genoni@pirelli.com \
    --cc=mingo@elte.hu \
    --cc=protasnb@gmail.com \
    --cc=yinghai.lu@amd.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body. 
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.