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pci: vfio: Filter out some PCI extended capabilities

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There are PCI extended capabilities that can't be passed through the VM
as they would be unusable from a guest perspective. That's why we
introduce a way to patch what is returned to the guest when the PCI
configuration space is accessed. The list of patches is created from the
parsing of the extended capabilities in that case, and particularly
based on the presence of the SRIOV and Resizable BAR capabilities.

Signed-off-by: Sebastien Boeuf <sebastien.boeuf@intel.com>
Signed-off-by: Steven Dake <sdake@lambdal.com>
This commit is contained in:
Sebastien Boeuf
2022-08-08 14:43:04 +02:00
parent 9f89e0a4e0
commit e45e3df64d
4 changed files with 177 additions and 6 deletions
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2
pci/src/lib.rs
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@@ -17,7 +17,7 @@ mod vfio_user;
pub use self::bus::{PciBus, PciConfigIo, PciConfigMmio, PciRoot, PciRootError};
pub use self::configuration::{
PciBarConfiguration, PciBarPrefetchable, PciBarRegionType, PciCapability, PciCapabilityId,
PciClassCode, PciConfiguration, PciHeaderType, PciMassStorageSubclass,
PciClassCode, PciConfiguration, PciExpressCapabilityId, PciHeaderType, PciMassStorageSubclass,
PciNetworkControllerSubclass, PciProgrammingInterface, PciSerialBusSubClass, PciSubclass,
};
pub use self::device::{