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From: Vadim Rozenfeld <vrozenfe@redhat.com>
Date: Thu, 08 Jan 2015 21:03:38 +1100
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Subject: Re: [Qemu-devel] Fwd: [question] About MSI for vioscsi
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To: "Wangting (Kathy)" <kathy.wangting@huawei.com>
Cc: qemu-devel <qemu-devel@nongnu.org>

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.


> >>
> >>    Thank you very much.
> >>
> >>    Best wishes,
> >>
> >>    Ting Wang
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> > 
> > 
> > 
> > 
> 
>