[Xen-devel] SHUTDOWN_crash and vcpu deferrals

[John Levon <levon@xxxxxxxxxxxxxxxxx>]

If an HVM guest is waiting for an ioemu assist, when qemu isn't running, and
domain_shutdown(SHUTDOWN_crash) is called, then the domain isn't crashed
properly:

446 void domain_shutdown(struct domain *d, u8 reason)
447 { 
...
466  for_each_vcpu ( d, v )
467  {
468   if ( v->defer_shutdown )
469    continue; 

Nothing will ever end the deferral. I added code to bust through the
deferral if SHUTDOWN_crash was the reason, and it seemed to help, but
I'm not sure it's the right fix.

regards
john

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