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Re: [Qemu-devel] [PATCH][v13] megasas: LSI Megaraid SAS HBA emulation
From: |
Hannes Reinecke |
Subject: |
Re: [Qemu-devel] [PATCH][v13] megasas: LSI Megaraid SAS HBA emulation |
Date: |
Tue, 21 Feb 2012 11:27:15 +0100 |
User-agent: |
Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.14) Gecko/20110221 SUSE/3.1.8 Thunderbird/3.1.8 |
On 02/21/2012 12:04 AM, Michael S. Tsirkin wrote:
> On Mon, Feb 20, 2012 at 04:17:05PM +0100, Alexander Graf wrote:
>>
>> On 20.02.2012, at 16:16, Hannes Reinecke wrote:
>>
>>> On 02/20/2012 04:13 PM, Alexander Graf wrote:
>>>>
>>>> On 20.02.2012, at 16:11, Hannes Reinecke wrote:
>>>>
>>>>> This patch adds an emulation for the LSI Megaraid SAS 8708EM2 HBA.
>>>>> I've tested it to work with Linux, Windows Vista, and Windows7.
>>>>>
>>>>> Changes since v12:
>>>>> - Fixup flag setting via properties
>>>>> - Disable MSI-X per default
>>>>> - Fixup MSI-X handling
>>>>
>>>> If MSI-X works again, why disable it? :o Does it break in other cases?
>>>>
>>> It doesn't. No idea why.
>>> That's why I disabled it :-)
>>>
>>> The MSI-X vector is signalled, but nothing on the OS side appear to
>>> receive it.
>>> If you got any idea on how to debug it I'm all ears ...
>>
>> Michael, any ideas? IIRC MSI-X used to work in earlier versions, so
>> something recent must've broken it.
>>
>>
>> Alex
>
> Hmm, there were's any recent changes I'm aware of.
> Try to check that MSIX vector as qemu sees it
> matches the value that the guest set.
> If using kvm, compare against kernel as well.
> Endian-ness issue somehow?
> Are you testing on x86?
>
Testing on x86_64.
But apparently the (linux) driver doesn't activate MSI-X.
So either I didn't set it up properly in the HBA emulation
or something else went wrong.
Cheers,
Hannes
--
Dr. Hannes Reinecke zSeries & Storage
address@hidden +49 911 74053 688
SUSE LINUX Products GmbH, Maxfeldstr. 5, 90409 Nürnberg
GF: J. Hawn, J. Guild, F. Imendörffer, HRB 16746 (AG Nürnberg)
Re: [Qemu-devel] [PATCH][v13] megasas: LSI Megaraid SAS HBA emulation, Gerhard Wiesinger, 2012/02/20