kernel/arch/um/include/linux/virtio-uml.h, branch linux-rolling-stableHosts the 0x221E linux distro kernel.https://universe.0xinfinity.dev/distro/kernel/atom?h=linux-rolling-stable2021-06-17T19:45:44Zum: virtio/pci: enable suspend/resume2021-06-17T19:45:44ZJohannes Bergjohannes.berg@intel.com2021-03-05T12:19:59Zurn:sha1:43c590cb86665be702c0af0231a10ec813df9cfd
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>