From: Anthony Liguori <anthony@codemonkey.ws>
To: Jamie Lokier <jamie@shareable.org>
Cc: Anthony Liguori <aliguori@us.ibm.com>,
kvm-devel <kvm@vger.kernel.org>, Gleb Natapov <gleb@redhat.com>,
Glauber Costa <glommer@redhat.com>,
qemu-devel@nongnu.org, Juan Quintela <quintela@trasno.org>,
Avi Kivity <avi@redhat.com>
Subject: [Qemu-devel] Re: [PATCH v2 3/9] provide in-kernel ioapic
Date: Mon, 12 Oct 2009 09:49:54 -0500 [thread overview]
Message-ID: <4AD34212.9060805@codemonkey.ws> (raw)
In-Reply-To: <20091012141825.GC13560@shareable.org>
Jamie Lokier wrote:
> Anthony Liguori wrote:
>
>> We already have the single device model implementation and the
>> limitations are well known. The best way to move forward is for someone
>> to send out patches implementing separate device models.
>>
>> At that point, it becomes a discussion of two concrete pieces of code
>> verses hand waving.
>>
>
> Out of curiosity now, what _are_ the behavioural differences between
> the in-kernel irqchip and the qemu one?
>
> Are the differences significant to guests, such that it might be
> necessary to disable the in-kernel irqchip for some guests, or
> conversely, necessary to use KVM for some guests?
>
No, the behavior differences are not terribly significant for the apic.
Disabling it is really most useful for debugging purposes.
Regards,
Anthony Liguori
prev parent reply other threads:[~2009-10-12 14:50 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-07 22:08 [Qemu-devel] [PATCH v2] Add in-kernel irqchip Glauber Costa
2009-10-07 22:08 ` [Qemu-devel] [PATCH v2 1/9] add base-addr field to io apic state Glauber Costa
2009-10-07 22:08 ` [Qemu-devel] [PATCH v2 2/9] Save missing fields in VMState Glauber Costa
2009-10-07 22:08 ` [Qemu-devel] [PATCH v2 3/9] provide in-kernel ioapic Glauber Costa
2009-10-07 22:08 ` [Qemu-devel] [PATCH v2 4/9] provide in-kernel apic Glauber Costa
2009-10-07 22:08 ` [Qemu-devel] [PATCH v2 5/9] provide apic_set_irq_delivered Glauber Costa
2009-10-07 22:08 ` [Qemu-devel] [PATCH v2 6/9] provide in-kernel i8259 chip Glauber Costa
2009-10-07 22:08 ` [Qemu-devel] [PATCH v2 7/9] initialize " Glauber Costa
2009-10-07 22:08 ` [Qemu-devel] [PATCH v2 8/9] Initialize in-kernel irqchip Glauber Costa
2009-10-07 22:08 ` [Qemu-devel] [PATCH v2 9/9] Add -kvm option Glauber Costa
2009-10-07 23:00 ` [Qemu-devel] " Anthony Liguori
2009-10-07 23:14 ` Glauber Costa
2009-10-07 23:28 ` Anthony Liguori
2009-10-12 11:58 ` Gerd Hoffmann
2009-10-12 14:04 ` Anthony Liguori
2009-10-12 15:34 ` Gerd Hoffmann
2009-10-12 16:31 ` Anthony Liguori
2009-10-13 8:05 ` Gerd Hoffmann
2009-10-13 15:33 ` Anthony Liguori
2009-10-13 19:26 ` Markus Armbruster
2009-10-13 20:43 ` Anthony Liguori
2009-10-14 8:08 ` Gerd Hoffmann
2009-10-13 15:36 ` Anthony Liguori
2009-10-13 22:57 ` Jamie Lokier
2009-10-08 14:07 ` Avi Kivity
2009-10-08 14:23 ` Anthony Liguori
2009-10-08 14:30 ` Avi Kivity
2009-10-08 14:33 ` Anthony Liguori
2009-10-08 14:41 ` Avi Kivity
2009-10-08 14:56 ` Anthony Liguori
2009-10-08 15:05 ` Avi Kivity
2009-10-08 15:14 ` Anthony Liguori
2009-10-12 11:15 ` Gerd Hoffmann
2009-10-08 14:34 ` Gleb Natapov
2009-10-08 12:02 ` [Qemu-devel] Re: [PATCH v2 7/9] initialize i8259 chip Jan Kiszka
2009-10-08 13:55 ` [Qemu-devel] Re: [PATCH v2 4/9] provide in-kernel apic Anthony Liguori
2009-10-08 14:09 ` Avi Kivity
2009-10-08 14:22 ` Glauber Costa
2009-10-09 10:06 ` Jamie Lokier
2009-10-09 14:30 ` Glauber Costa
2009-10-09 16:48 ` Jamie Lokier
2009-10-09 18:06 ` Glauber Costa
2009-10-09 19:49 ` Anthony Liguori
2009-10-11 9:10 ` Avi Kivity
2009-10-12 13:41 ` Anthony Liguori
2009-10-08 14:26 ` Anthony Liguori
2009-10-08 14:31 ` Avi Kivity
2009-10-08 14:39 ` Anthony Liguori
2009-10-08 14:46 ` Glauber Costa
2009-10-08 14:44 ` Glauber Costa
2009-10-08 11:46 ` [Qemu-devel] Re: [PATCH v2 3/9] provide in-kernel ioapic Jan Kiszka
2009-10-08 13:49 ` Anthony Liguori
2009-10-08 13:54 ` Avi Kivity
2009-10-08 15:53 ` Jan Kiszka
2009-10-08 16:07 ` Jamie Lokier
2009-10-08 16:12 ` Anthony Liguori
2009-10-08 16:17 ` Avi Kivity
2009-10-08 16:22 ` Gleb Natapov
2009-10-08 16:29 ` Avi Kivity
2009-10-08 16:34 ` Gleb Natapov
2009-10-08 16:42 ` Avi Kivity
2009-10-08 17:11 ` Gleb Natapov
2009-10-09 10:02 ` Jamie Lokier
2009-10-09 12:02 ` Gleb Natapov
2009-10-09 14:32 ` Glauber Costa
2009-10-09 16:49 ` Jamie Lokier
[not found] ` <m31vlctk9q.fsf@neno.mitica>
2009-10-09 21:34 ` Glauber Costa
2009-10-12 13:20 ` Anthony Liguori
2009-10-12 14:18 ` Jamie Lokier
2009-10-12 14:49 ` Anthony Liguori [this message]
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