From: "Wangting (Kathy)" <kathy.wangting@huawei.com>
To: Vadim Rozenfeld <vrozenfe@redhat.com>
Cc: qemu-devel <qemu-devel@nongnu.org>
Subject: [Qemu-devel] Fwd: [question] About MSI for vioscsi
Date: Thu, 8 Jan 2015 16:40:53 +0800 [thread overview]
Message-ID: <54AE4295.7040109@huawei.com> (raw)
In-Reply-To: <54AE4253.2090206@huawei.com>
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?
Thank you very much.
Best wishes,
Ting Wang
next parent reply other threads:[~2015-01-08 8:42 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <54AE4253.2090206@huawei.com>
2015-01-08 8:40 ` Wangting (Kathy) [this message]
2015-01-08 9:01 ` [Qemu-devel] Fwd: [question] About MSI for vioscsi Vadim Rozenfeld
2015-01-08 9:27 ` Wangting (Kathy)
2015-01-08 10:03 ` Vadim Rozenfeld
2015-01-09 3:48 ` Wangting (Kathy)
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