D28579.id83663.diff
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D28579.id83663.diff
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	Index: sys/arm64/arm64/mp_machdep.c
	===================================================================
	--- sys/arm64/arm64/mp_machdep.c
	+++ sys/arm64/arm64/mp_machdep.c
	@@ -437,8 +437,27 @@
	struct cpu_group *
	cpu_topo(void)
	{
	-
	- return (smp_topo_none());
	+ cpuset_t dom;
	+ int cpuspdom, i, j;
	+
	+ if (vm_ndomains == 1)
	+ return (smp_topo_none());
	+ if (mp_ncpus % vm_ndomains != 0) {
	+ printf("%s: unbalanced NUMA domains detected\n", __func__);
	+ return (smp_topo_none());
	+ }
	+ cpuspdom = mp_ncpus / vm_ndomains;
	+ for (i = 0; i < vm_ndomains; i++) {
	+ CPU_ZERO(&dom);
	+ for (j = 0; j < cpuspdom; j++)
	+ CPU_SET(i * cpuspdom + j, &dom);
	+ if (CPU_CMP(&dom, &cpuset_domain[i]) != 0) {
	+ printf("%s: non-contiguous NUMA domains detected\n",
	+ __func__);
	+ return (smp_topo_none());
	+ }
	+ }
	+ return (smp_topo_1level(CG_SHARE_L3, cpuspdom, 0));
	}

	/* Determine if we running MP machine */