On Mon, 2021-01-04 at 12:06 -0500, boris.ostrov...@oracle.com wrote:
> > @@ -115,7 +115,7 @@ PV_CALLEE_SAVE_REGS_THUNK(xen_vcpu_stolen);
> > void __init xen_init_spinlocks(void)
> > {
> > /* Don't need to use pvqspinlock code if there is only 1 vCPU. */
> > - if (num_possible_cpus() == 1 || nopvspin)
> > + if (num_possible_cpus() == 1 || nopvspin || !xen_have_vector_callback)
>
>
> xen_init_spinlock() will not be called without vector callbacks so
> this test is not really necessary.Right, that's just paranoia to make the conditions consistent and safe.
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