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Re: [Xen-devel] Enabling vm_event for a guest with more VCPUs than available ring buffer slots freezes the virtual machine
On Tue, Feb 7, 2017 at 9:53 AM, Razvan Cojocaru <rcojocaru@xxxxxxxxxxxxxxx> wrote:
I think is a side-effect of the growth of the vm_event structure and the fact that we have a single page ring. The check effectively sets a threshold of having enough space for each vCPU to place at least one more event on the ring, and if that's not the case it gets paused. OTOH I think this would only have an effect on asynchronous events, for all other events the vCPU is already paused. Is that the case you have?
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