[Xen-devel] [PATCHv1 0/3]: xen: voluntary preemption for privcmd hypercalls

[David Vrabel <david.vrabel@xxxxxxxxxx>]

This series adds a voluntary preemption point into hypercalls issued
by privcmd.  Without this, long running hypercalls will prevent the
task from being scheduled (potentially for several seconds) which may
trigger the kernel's soft lockup detector.

I've added a stub is_preemptible_hypercall() for ARM but would
appreciate a working implementation.  Checking whether the PC is
within the privcmd_hypercall function would probably do.

David


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