Hi, I have the following problem: I have two vga cards, an AMD HD5450 and a HD5700.. When I hide both via pciback.hide at boot time, start a win7 domU passing through one of the cards, vga passthrough works fine, but when i then shutdown the win7 domU, the whole dom0 hangs and i have to reset the whole server. When I do the same with only one vga hidden and one for the dom0, it works without problems. Logs don''t show something suspiciously and i don''t know how i can debug this, so unfortunatly i''m in a bit of a dead end here. Does anyone have an idea what can cause this or how i can resolve this?
I did some furthor testing and found out that this is perfectly reproducable and keeps crashing everytime. I tested this with different kernel (3.7.4 and 3.8.2), different domU config options (pae, apic, acpi, pci_msitranslate, pci_permissive, pci_powermanagement etc.) and with both traditional and upstream QEMU. So since this seems to be a bug and not some usage issue, I''m including xen-devel on this. Any help on resolving or even debugging this furthor would be welcome. (System: Debian Wheezy, Vanilla 3.8.2 kernel, latest xen-unstable staging git tree) 2013/3/3 Matthias <matthias.kannenberg@googlemail.com>:> Hi, > > I have the following problem: > > I have two vga cards, an AMD HD5450 and a HD5700.. When I hide both > via pciback.hide at boot time, start a win7 domU passing through one > of the cards, vga passthrough works fine, but when i then shutdown the > win7 domU, the whole dom0 hangs and i have to reset the whole server. > > When I do the same with only one vga hidden and one for the dom0, it > works without problems. > > Logs don''t show something suspiciously and i don''t know how i can > debug this, so unfortunatly i''m in a bit of a dead end here. Does > anyone have an idea what can cause this or how i can resolve this?
I did some furthor testing and found out that this is perfectly reproducable and keeps crashing everytime. I tested this with different kernel (3.7.4 and 3.8.2), different domU config options (pae, apic, acpi, pci_msitranslate, pci_permissive, pci_powermanagement etc.) and with both traditional and upstream QEMU. So since this seems to be a bug and not some usage issue, I''m including xen-devel on this. Any help on resolving or even debugging this furthor would be welcome. (System: Debian Wheezy, Vanilla 3.8.2 kernel, latest xen-unstable staging git tree) 2013/3/3 Matthias <matthias.kannenberg@googlemail.com>:> Hi, > > I have the following problem: > > I have two vga cards, an AMD HD5450 and a HD5700.. When I hide both > via pciback.hide at boot time, start a win7 domU passing through one > of the cards, vga passthrough works fine, but when i then shutdown the > win7 domU, the whole dom0 hangs and i have to reset the whole server. > > When I do the same with only one vga hidden and one for the dom0, it > works without problems. > > Logs don''t show something suspiciously and i don''t know how i can > debug this, so unfortunatly i''m in a bit of a dead end here. Does > anyone have an idea what can cause this or how i can resolve this?