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To: David Marchand <david.marchand@redhat.com>
Cc: "Yigit, Ferruh" <ferruh.yigit@intel.com>,
 Maxime Coquelin <maxime.coquelin@redhat.com>, dev <dev@dpdk.org>,
 "Burakov, Anatoly" <anatoly.burakov@intel.com>, xuemingl@nvidia.com,
 Gaetan Rivet <grive@u256.net>, "Xia, Chenbo" <chenbo.xia@intel.com>
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Subject: Re: [dpdk-dev] [PATCH v6 1/2] bus/pci: use PCI standard sysfs entry
 to get PIO address
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On 2021/2/25 1:52, David Marchand wrote:
> On Wed, Feb 24, 2021 at 4:29 PM 谢华伟(此时此刻） <huawei.xhw@alibaba-inc.com> wrote:
>>> Did you check that virtio devices bound to uio_pci_generic still works
>>> with legacy mode + PIO?
>> I had verified PIO, might under igb_uio driver.
> Well, if you are unsure, please retest both cases, igb_uio and uio_pci_generic.
>
I still haven't got a VM with PIO, but retested MMIO with both igb_uio 
and uio_pci_generic. They both works.

@Chenbo

Could you help run  with PIO?

>> Theoretically it works with uio_pci_generic driver. I could do the test
>> if needed. Give me some time.  Have to create a legacy VM. Now bars in
>> virtio device in the cloud are basically mmio.
> Sure, take the time to check.
> I'll wait for your confirmation, thanks.
>
>