[src/trunk]: src/sys/arch/x86/x86 Don't probe for the no FPU case. it's not s...

[maya <maya%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/244da1878d78
branches:  trunk
changeset: 827033:244da1878d78
user:      maya <maya%NetBSD.org@localhost>
date:      Mon Oct 09 17:41:18 2017 +0000

description:
Don't probe for the no FPU case. it's not supported

diffstat:

 sys/arch/x86/x86/identcpu.c |  14 ++------------
 1 files changed, 2 insertions(+), 12 deletions(-)

diffs (38 lines):

diff -r 345888986087 -r 244da1878d78 sys/arch/x86/x86/identcpu.c
--- a/sys/arch/x86/x86/identcpu.c       Mon Oct 09 17:39:33 2017 +0000
+++ b/sys/arch/x86/x86/identcpu.c       Mon Oct 09 17:41:18 2017 +0000
@@ -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 @@
 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)