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qubes/ext/pci: fix handling dom0 before starting first VM

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Before starting fist VM, backend/pci xenstore directory does not exists.
Do not crash on it

QubesOS/qubes-issues#2257
This commit is contained in:
Marek Marczykowski-Górecki 2016-09-12 06:06:51 +02:00
parent 2956f62bbc
commit 8ca08c7790
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GPG Key ID: 063938BA42CFA724
1 changed files with 2 additions and 2 deletions
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4
qubes/ext/pci.py
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@ -97,8 +97,8 @@ def attached_devices(app):
xs = app.vmm.xs
devices = {}
for domid in xs.ls('', 'backend/pci'):
for devid in xs.ls('', 'backend/pci/' + domid):
for domid in xs.ls('', 'backend/pci') or []:
for devid in xs.ls('', 'backend/pci/' + domid) or []:
devpath = 'backend/pci/' + domid + '/' + devid
domain_name = xs.read('', devpath + '/domain')
try: