+ xen-devel On Mon, 24 Jun 2019, Stefano Stabellini wrote: > Hi all, > > I might have found a bug with PCI passthrough to a Linux HVM guest on > x86 with Xen 4.12. It is not easy for me to get access, and especially > change components, on this particular system, and I don't have access to > other x86 boxes at the moment, so apologies for the partial information > report. The setup is as follow: > > - two PCI devices have been assigned to a HVM guest, everything is fine > - reboot the guest from inside, i.e. `reboot' in Linux > - after the reboot completes, only one device is assigned > > Before the reboot, I see all the appropriate xenstore entries for both > devices. Everything is fine. After the reboot, I can only see the > xenstore entries of one device. It is as if the other device > "disappeared" without throwing any errors. > > Have you seen this before? Do you know if it has been fixed in staging? > I noticed this fix which seems to be very relevant: > > https://lists.xenproject.org/archives/html/xen-devel/2018-11/msg01616.html > > but it is already included in 4.12. > > Thank you, > > Stefano >
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