[src/trunk]: src/sys/arch/powerpc/oea Only execute dssall when the CPU has th...

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

details:   https://anonhg.NetBSD.org/src/rev/a0f35112a159
branches:  trunk
changeset: 447280:a0f35112a159
user:      phx <phx%NetBSD.org@localhost>
date:      Sun Jan 06 11:20:53 2019 +0000

description:
Only execute dssall when the CPU has the Altivec instruction set extension.

diffstat:

 sys/arch/powerpc/oea/cpu_subr.c |  12 +++++++-----
 1 files changed, 7 insertions(+), 5 deletions(-)

diffs (34 lines):

diff -r 88ca423639b6 -r a0f35112a159 sys/arch/powerpc/oea/cpu_subr.c
--- a/sys/arch/powerpc/oea/cpu_subr.c   Sun Jan 06 11:08:34 2019 +0000
+++ b/sys/arch/powerpc/oea/cpu_subr.c   Sun Jan 06 11:20:53 2019 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: cpu_subr.c,v 1.97 2018/06/15 23:11:39 uwe Exp $        */
+/*     $NetBSD: cpu_subr.c,v 1.98 2019/01/06 11:20:53 phx Exp $        */
 
 /*-
  * Copyright (c) 2001 Matt Thomas.
@@ -34,7 +34,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: cpu_subr.c,v 1.97 2018/06/15 23:11:39 uwe Exp $");
+__KERNEL_RCSID(0, "$NetBSD: cpu_subr.c,v 1.98 2019/01/06 11:20:53 phx Exp $");
 
 #include "opt_ppcparam.h"
 #include "opt_ppccache.h"
@@ -329,10 +329,12 @@
        if (powersave <= 0)
                return;
 
+#if defined(_ARCH_PPC64) || defined (PPC_OEA64_BRIDGE)
+       if (cpu_altivec)
+               __asm volatile("dssall");
+#endif
+
        __asm volatile(
-#if defined(_ARCH_PPC64) || defined (PPC_OEA64_BRIDGE)
-               "dssall;"
-#endif
                "sync;"
                "mfmsr  %0;"
                "oris   %0,%0,%1@h;"    /* enter power saving mode */