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Revision afe3ef1d

IDafe3ef1d01dd767b6824c0580ecb92f6a27b75cc

Added by Isaku Yamahata almost 10 years ago

piix_pci: load path clean up

The previous patch didn't change the behavior when load,
it resulted in ugly code. This patch cleans it up.

With this patch, pic irq lines are manipulated when loaded.
It is expected that it won't change the behaviour because
the interrupts are level: at the moment e.g. pci devices already
reassert interrupts on load.

Test:
- rung linux as guest and use flooding ping (ping f) to host
in order to trigger interrupts for e1000 emulated.
savevm/loadvm and see guest kept running after loadvm.

To be honest, I'm not sure that ping -f caused enough interrupts
because Linux e1000 driver supports NAPI.
TODO: test more OSes, stress test with save/load, live-migration

Signed-off-by: Isaku Yamahata <>
Signed-off-by: Michael S. Tsirkin <>

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