D49155.id151568.diff
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D49155.id151568.diff
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	diff --git a/sys/arm64/vmm/vmm.c b/sys/arm64/vmm/vmm.c
	--- a/sys/arm64/vmm/vmm.c
	+++ b/sys/arm64/vmm/vmm.c
	@@ -310,6 +310,20 @@
	return (&vcpu->exitinfo);
	}

	+static int
	+vmm_unsupported_quirk(void)
	+{
	+ /*
	+ * Known to not load on Ampere eMAG
	+ * https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=285051
	+ */
	+ if (CPU_MATCH(CPU_IMPL_MASK \| CPU_PART_MASK, CPU_IMPL_APM,
	+ CPU_PART_EMAG8180, 0, 0))
	+ return (ENXIO);
	+
	+ return (0);
	+}
	+
	static int
	vmm_init(void)
	{
	@@ -339,6 +353,9 @@

	switch (what) {
	case MOD_LOAD:
	+ error = vmm_unsupported_quirk();
	+ if (error != 0)
	+ break;
	error = vmmdev_init();
	if (error != 0)
	break;