Module Name: src
Committed By: maya
Date: Mon Oct 9 17:41:18 UTC 2017
Modified Files:
src/sys/arch/x86/x86: identcpu.c
Log Message:
Don't probe for the no FPU case. it's not supported
To generate a diff of this commit:
cvs rdiff -u -r1.58 -r1.59 src/sys/arch/x86/x86/identcpu.c
Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.
Modified files:
Index: src/sys/arch/x86/x86/identcpu.c
diff -u src/sys/arch/x86/x86/identcpu.c:1.58 src/sys/arch/x86/x86/identcpu.c:1.59
--- src/sys/arch/x86/x86/identcpu.c:1.58 Mon Oct 9 17:39:33 2017
+++ src/sys/arch/x86/x86/identcpu.c Mon Oct 9 17:41:18 2017
@@ -1,4 +1,4 @@
-/* $NetBSD: identcpu.c,v 1.58 2017/10/09 17:39:33 maya Exp $ */
+/* $NetBSD: identcpu.c,v 1.59 2017/10/09 17:41:18 maya Exp $ */
/*-
* Copyright (c) 1999, 2000, 2001, 2006, 2007, 2008 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
*/
#include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: identcpu.c,v 1.58 2017/10/09 17:39:33 maya Exp $");
+__KERNEL_RCSID(0, "$NetBSD: identcpu.c,v 1.59 2017/10/09 17:41:18 maya Exp $");
#include "opt_xen.h"
@@ -705,19 +705,9 @@ static void
cpu_probe_old_fpu(struct cpu_info *ci)
{
#if defined(__i386__) && !defined(XEN)
- uint16_t control;
- /* Check that there really is an fpu (496SX) */
clts();
fninit();
- /* Read default control word */
- fnstcw(&control);
- if (control != __INITIAL_NPXCW__) {
- /* Must be a 486SX, trap FP instructions */
- lcr0((rcr0() & ~CR0_MP) | CR0_EM);
- i386_fpu_present = 0;
- return;
- }
/* Check for 'FDIV' bug on the original Pentium */
if (npx586bug1(4195835, 3145727) != 0)
