Somehow the message "Stuck ??" seems to indicate that the trampoline has run but the VCPU did not report back via the callin flags. I assume that would be done when the IPI signalling succeeds, so it seems (pointing vaguely) something there, Well, interaction of APIC, NMI signalling, ...
Somehow the message "Stuck ??" seems to indicate that the trampoline has run but the VCPU did not report back via the callin flags. I assume that would be done when the IPI signalling succeeds, so it seems (pointing vaguely) something there, Well, interaction of APIC, NMI signalling, ...