CVSROOT: /cvs
Module name: src
Changes by: [email protected] 2025/06/24 16:01:10
Modified files:
usr.sbin/vmd : pci.c
Log message:
Prevent vmd(8) guests from reading outside pci config space.
vmd emulates a pci host bridge and attached devices. Guests could
read and write beyond a device's configuration space, clobbering
device state or worse. They could also do this for non-existent
devices on the pci host bridge.
The PCI spec says to return all 1's when accessing non-existent
devices, so make vmd's emulation to do the same for these invalid
reads. For invalid writes, drop them.
ok mlarkin@
