[dpdk-dev] [PATCH v2] bus/pci: resolve multiple NICs address conflicts

[David Marchand]

On Wed, Nov 6, 2019 at 7:16 AM Wangyu (Eric) <seven.wangyu at huawei.com> wrote:
>
>
> In 64K pagesize system, DPDK will read the size NIC need in uio/uio1/maps/map1/size,  when the size small than pagesize(e.g.,82599 is 16K), dev->mem_resource[i].len will be 16K, but the mmap function applies for at least 1 page size, which is 64K.
> Then second NIC mmap, start address is first NIC address + 16K, which already used by first NIC.

Do you see this issue with vfio?


> So if change the size to first NIC address + 64K, problem solved.

You are hacking a description of the device resources to workaround a problem.
This patch is a no go for me.

Maybe there is something to do with the hint passed to mmap in uio case.
Adding Anatoly to the loop.


-- 
David Marchand