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Re: [Qemu-devel] Fwd: [question] About MSI for vioscsi
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From: |
Wangting (Kathy) |
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Subject: |
Re: [Qemu-devel] Fwd: [question] About MSI for vioscsi |
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Date: |
Thu, 8 Jan 2015 17:27:25 +0800 |
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User-agent: |
Mozilla/5.0 (Windows NT 6.1; rv:24.0) Gecko/20100101 Thunderbird/24.6.0 |
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
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>> the patch about Bug 1077566 into it, but I find that MSI still doesn't work,
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>> because the value of IRQ is not negative in the device manager.
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>> I try to trace the I/O path with ENABLE_COM_DEBUG, and I find that
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>> pMsixCapOffset->MessageControl.MSIXEnable is zero when
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>> StorPortGetBusData returned in VioScsiFindAdapter, so MSI can't be enabled.
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>> I have tested that MSI is successfully enabled in virtio-win-0.1-81.
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>> But I still want to find out why the patch is not work in virtio-win-0.1-74.
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>> Is there some important points I missed?
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> Did you enable MSISupported in inf file?
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> Cheers,
> Vadim.
>
Where is the inf file? Do you mean qemupciserial.inf?
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>> Thank you very much.
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>> Best wishes,
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>> Ting Wang
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