From: "Yinghai Lu" <yhlu.kernel@gmail.com>
To: "Jeremy Fitzhardinge" <jeremy@goop.org>
Cc: "Eric W. Biederman" <ebiederm@xmission.com>,
"Ingo Molnar" <mingo@elte.hu>,
"Linux Kernel Mailing List" <linux-kernel@vger.kernel.org>
Subject: Re: TARGET_CPUS in assign_irq_vector
Date: Tue, 9 Sep 2008 15:54:16 -0700 [thread overview]
Message-ID: <86802c440809091554y349366fdu8e4ca59797ab4205@mail.gmail.com> (raw)
In-Reply-To: <48C6F913.1010509@goop.org>
On Tue, Sep 9, 2008 at 3:30 PM, Jeremy Fitzhardinge <jeremy@goop.org> wrote:
> On x86-64, the genapic implementations of target_cpus returns
> cpu_online_map. What if more cpus have yet to come online? Shouldn't
> it be cpu_possible_map?
>
> Though I'm probably confused. I don't really know what the intent of
> target_cpus and vector_allocation_domain is.
>
logical mode, vector_allocation_domain will return all online cpus aka
the 8 cpus.
phys_flat mode, vector_allotcation_domain will only the cpumask with
the cpu set..
target_cpus is the cpus that could be possible to used to take vector
and process that irq. so at least it should be online.
YH
next prev parent reply other threads:[~2008-09-09 22:54 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-09-09 22:30 Jeremy Fitzhardinge
2008-09-09 22:54 ` Yinghai Lu [this message]
2008-09-09 23:46 ` Jeremy Fitzhardinge
2008-09-10 0:26 ` Yinghai Lu
2008-09-10 0:50 ` Jeremy Fitzhardinge
2008-09-10 1:24 ` Yinghai Lu
2008-09-10 6:45 ` Eric W. Biederman
2008-09-10 19:44 ` Jeremy Fitzhardinge
2008-09-10 20:07 ` Eric W. Biederman
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