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Date: Wed, 3 Nov 2010 22:37:18 +0900
From: Isaku Yamahata <yamahata@valinux.co.jp>
Subject: Re: [Qemu-devel] MSI broken?
Message-ID: <20101103133718.GC26077@valinux.co.jp>
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To: Gerd Hoffmann <kraxel@redhat.com>
Cc: "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>

On Wed, Nov 03, 2010 at 01:40:59PM +0100, Gerd Hoffmann wrote:
> On 11/03/10 13:34, Isaku Yamahata wrote:
>> On Wed, Nov 03, 2010 at 12:03:15PM +0100, Gerd Hoffmann wrote:
>>>   Hi,
>>>
>>> What is the status if the recently merged MSI support?
>>>
>>> I'm trying to use it to add msi support to the intel-hda driver (current
>>> wip patch attached).  Everything works fine up to the point where it
>>> comes to delivering the interrupt to the guest.  msi_notify pretends to
>>> signal the guest:
>>>
>>> msi_notify:243 intel-hda:30 notify vector 0x0 address: 0xfee01008 data:
>>> 0x4151
>>>
>>> The guest never ever receives this interrupt though:
>>>
>>> [root@localhost ~]# grep hda /proc/interrupts
>>>   43:          0   PCI-MSI-edge      hda_intel
>>>
>>> Ideas anyone?
>>
>> Let's track it down futher.
>> Were acpi_mem_writel() and apic_send_msi() in hw/apic.c called or not?
>
> No such function in my tree (savannah/master).
>
> Looks like some bits needed for msi are not merged yet?

Sorry typo. s/acpi/apic/.

I'm looking at 7d72e76228351d18a856f1e4f5365b59d3205dc3
of git://git.savannah.nongnu.org/qemu.git


>
> cheers,
>   Gerd
>

-- 
yamahata