D43305.diff
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	diff --git a/sys/arm64/arm64/swtch.S b/sys/arm64/arm64/swtch.S
	--- a/sys/arm64/arm64/swtch.S
	+++ b/sys/arm64/arm64/swtch.S
	@@ -148,9 +148,7 @@
	mov x21, x2

	#ifdef VFP
	- /* Load the pcb address */
	- mov x1, x4
	- bl vfp_save_state
	+ bl vfp_save_state_switch
	mov x0, x20
	#else
	mov x0, x1
	diff --git a/sys/arm64/arm64/vfp.c b/sys/arm64/arm64/vfp.c
	--- a/sys/arm64/arm64/vfp.c
	+++ b/sys/arm64/arm64/vfp.c
	@@ -216,6 +216,14 @@
	vfp_save_state_common(curthread, pcb);
	}

	+void
	+vfp_save_state_switch(struct thread *td)
	+{
	+ KASSERT(td != NULL, ("NULL vfp thread"));
	+
	+ vfp_save_state_common(td, td->td_pcb);
	+}
	+
	/*
	* Update the VFP state for a forked process or new thread. The PCB will
	* have been copied from the old thread.
	diff --git a/sys/arm64/include/vfp.h b/sys/arm64/include/vfp.h
	--- a/sys/arm64/include/vfp.h
	+++ b/sys/arm64/include/vfp.h
	@@ -79,6 +79,7 @@
	void vfp_restore_state(void);
	void vfp_save_state(struct thread , struct pcb );
	void vfp_save_state_savectx(struct pcb *);
	+void vfp_save_state_switch(struct thread *);

	struct fpu_kern_ctx;