AW: Xen data from meta-virtualization layer

[Leo Krueger <leo.krueger@zal.aero>]

Hi,

Thanks for your effort!

> -----Ursprüngliche Nachricht-----
> Von: Julien Grall <julien@xen.org>
> Gesendet: Montag, 23. November 2020 19:42
> An: Rahul Singh <Rahul.Singh@arm.com>; Leo Krueger
> <leo.krueger@zal.aero>
> Cc: Stefano Stabellini <stefano.stabellini@xilinx.com>; Peng Fan
> <peng.fan@nxp.com>; brucea@xilinx.com; Cornelia Bruelhart
> <cornelia.bruelhart@zal.aero>; oleksandr_andrushchenko@epam.com; xen-
> devel@lists.xenproject.org; Bertrand Marquis
> <Bertrand.Marquis@arm.com>
> Betreff: Re: Xen data from meta-virtualization layer
> 
> 
> 
> On 23/11/2020 11:41, Rahul Singh wrote:
> > Hello ,
> 
> Hi Rahul,
> 
> >> On 22 Nov 2020, at 10:55 pm, Leo Krueger <leo.krueger@zal.aero> wrote:
> >> root@kontron-sal28:~# ip link set up dev gbe0
> >> (XEN) vgic-v3-its.c:902:d0v0 vITS  cmd 0x0c: 000000170000000c
> >> 0000000000000001 0000000000000000 0000000000000000
> >> (XEN) vgic-v3-its.c:902:d0v0 vITS  cmd 0x05: 0000000000000005
> 0000000000000000 0000000000000000 0000000000000000
> >> [   34.034598] Atheros 8031 ethernet 0000:00:00.3:05: attached PHY driver
> [Atheros 8031 ethernet] (mii_bus:phy_addr=0000:00:00.3:05, irq=POLL)
> >> [   34.041111] 8021q: adding VLAN 0 to HW filter on device gbe0
> >> [   34.041209] IPv6: ADDRCONF(NETDEV_UP): gbe0: link is not ready
> >> root@kontron-sal28:~# [   35.041951] fsl_enetc 0000:00:00.0 gbe0: Link is
> Down
> >> [   38.114426] fsl_enetc 0000:00:00.0 gbe0: Link is Up - 1Gbps/Full - flow
> control off
> >> [   38.114508] IPv6: ADDRCONF(NETDEV_CHANGE): gbe0: link becomes
> ready
> >>
> >> Does that tell you anything?
> >>
> >
> > I just checked the logs shared, what I found out that there’s is an error
> while booting to configure the MSI for the PCI device because of that there
> will be case that Device Id generate out-of-band is not mapped correctly to
> ITS device table created while initialising the MSI for the device.
> > I might be wrong let someone else also comments on this.
> 
> I think there might be multiple issues. You spotted one below :).
> 
> > [    0.173964] OF: /soc/pcie@1f0000000: Invalid msi-map translation - no
> match for rid 0xf8 on           (null)
> 
> Leo, just to confirm, this error message is not spotted when booting Linux on
> baremetal?

In fact it is:

[    0.160077] OF: /soc/pcie@1f0000000: Invalid msi-map translation - no match for rid 0xf8 on           (null)

But everything works as expected here:

110:      34288          0   ITS-MSI   1 Edge      gbe0-rxtx0
111:          0       6196   ITS-MSI   2 Edge      gbe0-rxtx1

> 
> Cheers,

Best wishes

> 
> --
> Julien Grall