From 99aa060c2b2a9ff40708e12a41b37abcb194321b Mon Sep 17 00:00:00 2001
From: Marcel Moolenaar <marcel@FreeBSD.org>
Date: Fri, 7 May 2004 05:29:12 +0000
Subject: [PATCH] Make sure to sanitize the FP status register. Specifically
 this masks all FP traps, which should not happen in the kernel.

---
 sys/ia64/ia64/interrupt.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/sys/ia64/ia64/interrupt.c b/sys/ia64/ia64/interrupt.c
index c6b0cdbb817f..1b63841abab7 100644
--- a/sys/ia64/ia64/interrupt.c
+++ b/sys/ia64/ia64/interrupt.c
@@ -52,6 +52,7 @@
 
 #include <machine/clock.h>
 #include <machine/cpu.h>
+#include <machine/fpu.h>
 #include <machine/frame.h>
 #include <machine/intr.h>
 #include <machine/md_var.h>
@@ -132,6 +133,8 @@ interrupt(u_int64_t vector, struct trapframe *tf)
 	int64_t delta;
 	int count;
 
+	ia64_set_fpsr(IA64_FPSR_DEFAULT);
+
 	td = curthread;
 	atomic_add_int(&td->td_intr_nesting_level, 1);