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Re: [Qemu-devel] Fwd: [question] About MSI for vioscsi
From: |
Wangting (Kathy) |
Subject: |
Re: [Qemu-devel] Fwd: [question] About MSI for vioscsi |
Date: |
Fri, 9 Jan 2015 11:48:49 +0800 |
User-agent: |
Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 |
On 2015-1-8 18:03, Vadim Rozenfeld wrote:
> On Thu, 2015-01-08 at 17:27 +0800, Wangting (Kathy) wrote:
>>
>> On 2015-1-8 17:01, Vadim Rozenfeld wrote:
>>> On Thu, 2015-01-08 at 16:40 +0800, Wangting (Kathy) wrote:
>>>> Hi Vadim,
>>>>
>>>> In order to enable MSI for vioscsi in virtio-win-0.1-74, I try to merge
>>>>
>>>> the patch about Bug 1077566 into it, but I find that MSI still doesn't
>>>> work,
>>>>
>>>> because the value of IRQ is not negative in the device manager.
>>>>
>>>> I try to trace the I/O path with ENABLE_COM_DEBUG, and I find that
>>>>
>>>> pMsixCapOffset->MessageControl.MSIXEnable is zero when
>>>>
>>>> StorPortGetBusData returned in VioScsiFindAdapter, so MSI can't be enabled.
>>>>
>>>> I have tested that MSI is successfully enabled in virtio-win-0.1-81.
>>>>
>>>> But I still want to find out why the patch is not work in
>>>> virtio-win-0.1-74.
>>>>
>>>> Is there some important points I missed?
>>>
>>> Did you enable MSISupported in inf file?
>>>
>>> Cheers,
>>> Vadim.
>>>
>> Where is the inf file? Do you mean qemupciserial.inf?
>
> vioscsi.inx in the source directory. After stamping,
> it will be copied into vioscsi.inf, as part of build
> process.
>
>
Sorry, I forget to update vioscsi.inf after compiling. The patch is OK.
Thanks.
Ting
>>>>
>>>> Thank you very much.
>>>>
>>>> Best wishes,
>>>>
>>>> Ting Wang
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
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