On 15.05.2010 10:26, Alexander Graf wrote:
On S390, I'm also still sceptical if the implementation we have really works. A device injects an S390_INTERRUPT with its address and on the next vcpu_run, an according interrupt is issued. But what happens if two devices trigger an S390_INTERRUPT before the vcpu_run? We'd have lost an interrupt by then...
We're safe on that: the interrupt info field in both struct kvm (for
floating interrupts) and struct vcpu (for cpu local interrupts) have
their own locking and can queue up interrupts.
cheers,
Carsten
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