D36234.id111204.diff
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D36234.id111204.diff
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	diff --git a/sys/kern/kern_cpuset.c b/sys/kern/kern_cpuset.c
	--- a/sys/kern/kern_cpuset.c
	+++ b/sys/kern/kern_cpuset.c
	@@ -1743,10 +1743,43 @@
	return (0);
	}

	+#if defined(__powerpc__)
	+/*
	+ * TODO: At least powerpc64 and powerpc64le kernels panic with
	+ * exception 0x480 (instruction segment exception) when copyin/copyout,
	+ * are set as a function pointer in cpuset_copy_cb struct and called by
	+ * an external module (like pfsync). Tip: copyin/copyout have an ifunc
	+ * resolver function.
	+ *
	+ * Bisect of LLVM shows that the behavior changed on LLVM 10.0 with
	+ * https://reviews.llvm.org/rGdc06b0bc9ad055d06535462d91bfc2a744b2f589
	+ *
	+ * This is a hack/workaround while problem is being discussed with LLVM
	+ * community
	+ */
	+static int
	+cpuset_copyin(const void uaddr, void kaddr, size_t len)
	+{
	+ return(copyin(uaddr, kaddr, len));
	+}
	+
	+static int
	+cpuset_copyout(const void kaddr, void uaddr, size_t len)
	+{
	+ return(copyout(kaddr, uaddr, len));
	+}
	+
	static const struct cpuset_copy_cb copy_set = {
	- .cpuset_copyin = copyin,
	- .cpuset_copyout = copyout
	+ .cpuset_copyin = cpuset_copyin,
	+ .cpuset_copyout = cpuset_copyout
	};
	+#else
	+static const struct cpuset_copy_cb copy_set = {
	+ .cpuset_copyin = copyin,
	+ .cpuset_copyout = copyout
	+};
	+#endif
	+

	#ifndef _SYS_SYSPROTO_H_
	struct cpuset_args {