D13971.id38166.diff
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D13971.id38166.diff
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	Index: sys/amd64/amd64/machdep.c
	===================================================================
	--- sys/amd64/amd64/machdep.c
	+++ sys/amd64/amd64/machdep.c
	@@ -1509,6 +1509,16 @@
	return (kmdp);
	}

	+static int
	+pti_get_default(void)
	+{
	+
	+ if (strcmp(cpu_vendor, INTEL_VENDOR_ID) == 0)
	+ return (1);
	+
	+ return (0);
	+}
	+
	static void
	amd64_kdb_init(void)
	{
	@@ -1618,6 +1628,7 @@
	mtx_init(&dt_lock, "descriptor tables", NULL, MTX_DEF);

	/* exceptions */
	+ pti = pti_get_default();
	TUNABLE_INT_FETCH("vm.pmap.pti", &pti);

	for (x = 0; x < NIDT; x++)