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The UM virtual PCI devices currently cannot be suspended properly since the virtio driver already disables VQs well before the PCI bus's suspend_noirq wants to complete the transition by writing to PCI config space. After trying around for a long time with moving the devices on the DPM list, trying to create dependencies between them, etc. I gave up and instead added UML specific cross-driver API that lets the virt-pci code enable not suspending/resuming VQs for its devices. This then allows the PCI bus suspend_noirq to still talk to the device, and suspend/resume works properly. Signed-off-by: Johannes Berg <johannes.berg@intel.com> Signed-off-by: Richard Weinberger <richard@nod.at> |
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