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There're some cases the SOS (higher severity guest) needs to access the post-launched VM (lower severity guest) PCI CFG space: 1. The SR-IOV PF needs to reset the VF 2. Some pass through device still need DM to handle some quirk. In the case a device is assigned to a UOS and is not in a zombie state, the SOS is able to access, if and only if the SOS has higher severity than the UOS. Tracked-On: #4371 Signed-off-by: Li Fei1 <fei1.li@intel.com> |
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arch/x86 | ||
common | ||
debug | ||
dm | ||
hw | ||
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public |