[src/trunk]: src/sys/arch/powerpc zero PCU area when loading used area.

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

details:   https://anonhg.NetBSD.org/src/rev/5939bbbb433e
branches:  trunk
changeset: 765820:5939bbbb433e
user:      matt <matt%NetBSD.org@localhost>
date:      Tue Jun 07 01:01:42 2011 +0000

description:
zero PCU area when loading used area.

diffstat:

 sys/arch/powerpc/booke/spe.c   |  9 +++++++--
 sys/arch/powerpc/oea/altivec.c |  9 +++++++--
 sys/arch/powerpc/powerpc/fpu.c |  7 ++++---
 3 files changed, 18 insertions(+), 7 deletions(-)

diffs (89 lines):

diff -r 11edb9a76428 -r 5939bbbb433e sys/arch/powerpc/booke/spe.c
--- a/sys/arch/powerpc/booke/spe.c      Tue Jun 07 01:00:35 2011 +0000
+++ b/sys/arch/powerpc/booke/spe.c      Tue Jun 07 01:01:42 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: spe.c,v 1.4 2011/05/02 06:43:16 matt Exp $     */
+/*     $NetBSD: spe.c,v 1.5 2011/06/07 01:01:42 matt Exp $     */
 
 /*-
  * Copyright (c) 2011 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: spe.c,v 1.4 2011/05/02 06:43:16 matt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: spe.c,v 1.5 2011/06/07 01:01:42 matt Exp $");
 
 #include "opt_altivec.h"
 
@@ -77,6 +77,11 @@
 {
        struct pcb * const pcb = lwp_getpcb(l);
 
+       if (__predict_false(!vec_used_p(l))) {
+               memset(&pcb->pcb_vr, 0, sizeof(pcb->pcb_vr));
+               vec_mark_used(l);
+       }
+
        /*
         * Enable SPE temporarily (and disable interrupts).
         */
diff -r 11edb9a76428 -r 5939bbbb433e sys/arch/powerpc/oea/altivec.c
--- a/sys/arch/powerpc/oea/altivec.c    Tue Jun 07 01:00:35 2011 +0000
+++ b/sys/arch/powerpc/oea/altivec.c    Tue Jun 07 01:01:42 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: altivec.c,v 1.24 2011/05/25 05:42:37 matt Exp $        */
+/*     $NetBSD: altivec.c,v 1.25 2011/06/07 01:01:43 matt Exp $        */
 
 /*
  * Copyright (C) 1996 Wolfgang Solfrank.
@@ -32,7 +32,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: altivec.c,v 1.24 2011/05/25 05:42:37 matt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: altivec.c,v 1.25 2011/06/07 01:01:43 matt Exp $");
 
 #include "opt_multiprocessor.h"
 
@@ -77,6 +77,11 @@
 {
        struct pcb * const pcb = lwp_getpcb(l);
 
+       if (__predict_false(!vec_used_p(l))) {
+               memset(&pcb->pcb_vr, 0, sizeof(pcb->pcb_vr));
+               vec_mark_used(l);
+       }
+
        /*
         * Enable AltiVec temporarily (and disable interrupts).
         */
diff -r 11edb9a76428 -r 5939bbbb433e sys/arch/powerpc/powerpc/fpu.c
--- a/sys/arch/powerpc/powerpc/fpu.c    Tue Jun 07 01:00:35 2011 +0000
+++ b/sys/arch/powerpc/powerpc/fpu.c    Tue Jun 07 01:01:42 2011 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: fpu.c,v 1.30 2011/06/07 00:48:32 matt Exp $    */
+/*     $NetBSD: fpu.c,v 1.31 2011/06/07 01:01:43 matt Exp $    */
 
 /*
  * Copyright (C) 1996 Wolfgang Solfrank.
@@ -32,7 +32,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: fpu.c,v 1.30 2011/06/07 00:48:32 matt Exp $");
+__KERNEL_RCSID(0, "$NetBSD: fpu.c,v 1.31 2011/06/07 01:01:43 matt Exp $");
 
 #include "opt_multiprocessor.h"
 
@@ -80,8 +80,9 @@
 {
        struct pcb * const pcb = lwp_getpcb(l);
 
-       if (__predict_false(!used)) {
+       if (__predict_false(!fpu_used_p(l))) {
                memset(&pcb->pcb_fpu, 0, sizeof(pcb->pcb_fpu));
+               fpu_mark_used(l);
        }
 
        const register_t msr = mfmsr();