Request to map PCI device in a secondary that uses the --block for that device

[Antonio Di Bacco]

Thank you.
In my case,  I have the same block/allow but the primary does an
explicit probe of a DMA engine on the processor, the secondary is
notified and it crashes.  It should not crash I suppose.
The same software is running on several machines (100) but the problem
is sporadic just on two of them.

Very strange.

Thx,
Antonio.

On Wed, May 22, 2024 at 9:21 AM Dmitry Kozlyuk <dmitry.kozliuk at gmail.com> wrote:
>
> 2024-05-22 08:46 (UTC+0200), Antonio Di Bacco:
> > Is it correct that a primary requests a secondary to map a device that
> > the secondary explicitly blocks with the --block arg ?
> >
> > IN my case this requests of mapping creates a crash in the secondary.
> >
> > Using DPDK 21.11
> >
> > Best regards,
> > Antonio.
>
> Hi Antonio,
>
> "Secondary processes which requires access to physical devices in Primary
> process, must be passed with the same allow and block options."
>
> https://doc.dpdk.org/guides/prog_guide/multi_proc_support.html