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vmm: Allow restoring virtio-fs with no cache region

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It's totally acceptable to snapshot and restore a virtio-fs device that
has no cache region, since this is a valid mode of functioning for
virtio-fs itself.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
This commit is contained in:
Sebastien Boeuf 2021-07-26 15:18:11 +02:00 committed by Bo Chen
parent 0852287fee
commit 12db6e5068
1 changed files with 3 additions and 7 deletions
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10
vmm/src/device_manager.rs
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@ -383,8 +383,8 @@ pub enum DeviceManagerError {
/// Expected resources for virtio-pci could not be found. /// Expected resources for virtio-pci could not be found.
MissingVirtioPciResources, MissingVirtioPciResources,
/// Expected resources for virtio-fs could not be found. /// Expected resources for virtio-pmem could not be found.
MissingVirtioFsResources, MissingVirtioPmemResources,
/// Missing PCI b/d/f from the DeviceNode. /// Missing PCI b/d/f from the DeviceNode.
MissingDeviceNodePciBdf, MissingDeviceNodePciBdf,
@ -2173,10 +2173,6 @@ impl DeviceManager {
} }
} }
if cache_range.is_none() {
return Err(DeviceManagerError::MissingVirtioFsResources);
}
cache_range cache_range
} else { } else {
None None
@ -2334,7 +2330,7 @@ impl DeviceManager {
} }
if region_range.is_none() { if region_range.is_none() {
return Err(DeviceManagerError::MissingVirtioFsResources); return Err(DeviceManagerError::MissingVirtioPmemResources);
} }
region_range region_range