From: Avi Kivity <avi@redhat.com>
To: Gleb Natapov <gleb@redhat.com>
Cc: Anthony Liguori <aliguori@us.ibm.com>,
Glauber Costa <glommer@redhat.com>,
kvm-devel <kvm@vger.kernel.org>,
qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] Re: [PATCH v2 3/9] provide in-kernel ioapic
Date: Thu, 08 Oct 2009 18:29:53 +0200 [thread overview]
Message-ID: <4ACE1381.3020804@redhat.com> (raw)
In-Reply-To: <20091008162248.GK16702@redhat.com>
On 10/08/2009 06:22 PM, Gleb Natapov wrote:
> On Thu, Oct 08, 2009 at 06:17:57PM +0200, Avi Kivity wrote:
>
>> On 10/08/2009 06:07 PM, Jamie Lokier wrote:
>>
>>> Haven't we already confirmed that it *isn't* just an ioapic accelerator
>>> because you can't migrate between in-kernel iopic and qemu's ioapic?
>>>
>> We haven't confirmed it. Both implement the same spec, and if you
>> can't migrate between them, one of them has a bug (for example, qemu
>> ioapic doesn't implement polarity - but it's still just a bug).
>>
>>
> Are you saying that HW spec (that only describes software visible behavior)
> completely defines implementation? No other internal state is needed
> that may be done differently by different implementations?
>
It may be done differently (for example, selecting the cpu to deliver
the interrupt to), but as the guest cannot rely on the differences,
there's no need to save the state that can cause these differences.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2009-10-08 16:30 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 [this message]
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
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