[SPDK] Re: spdk_pci_device_map_bar cannot get virtual address with vfio-pci driver.

[SPDK] Re: spdk_pci_device_map_bar cannot get virtual address with vfio-pci driver.

[oscar.huang]

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Hi, Changpeng,

I have no idea the version number of the DPDK exactly. I just checkout v19.04.1 tag from the root of SPDK and then update submodules. I went to the dpdk directory then, and ran "git status", it showed "HEAD detached at 67b915b09".

Thanks
-Oscar

[SPDK] Re: spdk_pci_device_map_bar cannot get virtual address with vfio-pci driver.

[Liu, Changpeng]

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Hi Oscar,

vfio-pci is always the recommended driver in SPDK, what's your DPDK version when using SPDK 19.04?


> -----Original Message-----
> From: oscar.huang(a)microchip.com <oscar.huang(a)microchip.com>
> Sent: Wednesday, November 20, 2019 4:11 PM
> To: spdk(a)lists.01.org
> Subject: [SPDK] spdk_pci_device_map_bar cannot get virtual address with vfio-
> pci driver.
> 
> SPDK version: v19.04.1
> 
> I tried to use spdk_pci_device_map_bar to get the mapped virtual address of a
> BAR, but the obtained value is 0. Thy physical address and size are correct.
> 
> If I use uio_pci_generic instead,  the same code can run without problem. Is this
> a bug?
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