D53804.1794188888.diff
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D53804.1794188888.diff
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	diff --git a/sys/riscv/riscv/vm_machdep.c b/sys/riscv/riscv/vm_machdep.c
	--- a/sys/riscv/riscv/vm_machdep.c
	+++ b/sys/riscv/riscv/vm_machdep.c
	@@ -48,6 +48,7 @@

	#include <machine/riscvreg.h>
	#include <machine/cpu.h>
	+#include <machine/fpe.h>
	#include <machine/cpufunc.h>
	#include <machine/pcb.h>
	#include <machine/frame.h>
	@@ -91,7 +92,13 @@
	if ((flags & RFPROC) == 0)
	return;

	- /* RISCVTODO: save the FPU state here */
	+ /* Ensure the floating-point state is saved before copying the pcb. */
	+ if ((td1->td_pcb->pcb_fpflags & PCB_FP_STARTED) != 0) {
	+ MPASS(td1 == curthread);
	+ critical_enter();
	+ fpe_state_save(td1);
	+ critical_exit();
	+ }

	cpu_set_pcb_frame(td2);