[src/trunk]: src/sys/arch/amd64 Make pcb_ldt_sel, in amd64, an unused field. ...

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

details:   https://anonhg.NetBSD.org/src/rev/cbe9058b9d8f
branches:  trunk
changeset: 748564:cbe9058b9d8f
user:      rmind <rmind%NetBSD.org@localhost>
date:      Tue Oct 27 03:05:27 2009 +0000

description:
Make pcb_ldt_sel, in amd64, an unused field.  Unlike in i386, it was
missed during clean-up of LDT handling.

diffstat:

 sys/arch/amd64/amd64/machdep.c |  9 ++++-----
 sys/arch/amd64/include/pcb.h   |  4 ++--
 2 files changed, 6 insertions(+), 7 deletions(-)

diffs (52 lines):

diff -r 1d2f1525cfd7 -r cbe9058b9d8f sys/arch/amd64/amd64/machdep.c
--- a/sys/arch/amd64/amd64/machdep.c    Tue Oct 27 02:58:28 2009 +0000
+++ b/sys/arch/amd64/amd64/machdep.c    Tue Oct 27 03:05:27 2009 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: machdep.c,v 1.134 2009/10/19 18:41:10 bouyer Exp $     */
+/*     $NetBSD: machdep.c,v 1.135 2009/10/27 03:05:27 rmind Exp $      */
 
 /*-
  * Copyright (c) 1996, 1997, 1998, 2000, 2006, 2007, 2008
@@ -107,7 +107,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.134 2009/10/19 18:41:10 bouyer Exp $");
+__KERNEL_RCSID(0, "$NetBSD: machdep.c,v 1.135 2009/10/27 03:05:27 rmind Exp $");
 
 /* #define XENDEBUG_LOW  */
 
@@ -415,13 +415,12 @@
        pcb->pcb_rsp0 = (USER_TO_UAREA(l->l_addr) + KSTACK_SIZE - 16) & ~0xf;
        pcb->pcb_iopl = SEL_KPL;
 
-       pcb->pcb_ldt_sel = pmap_kernel()->pm_ldt_sel =
-           GSYSSEL(GLDT_SEL, SEL_KPL);
+       pmap_kernel()->pm_ldt_sel = GSYSSEL(GLDT_SEL, SEL_KPL);
        pcb->pcb_cr0 = rcr0() & ~CR0_TS;
        l->l_md.md_regs = (struct trapframe *)pcb->pcb_rsp0 - 1;
 
 #if !defined(XEN)
-       lldt(pcb->pcb_ldt_sel);
+       lldt(pmap_kernel()->pm_ldt_sel);
 #else
        {
        struct physdev_op physop;
diff -r 1d2f1525cfd7 -r cbe9058b9d8f sys/arch/amd64/include/pcb.h
--- a/sys/arch/amd64/include/pcb.h      Tue Oct 27 02:58:28 2009 +0000
+++ b/sys/arch/amd64/include/pcb.h      Tue Oct 27 03:05:27 2009 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: pcb.h,v 1.15 2008/10/26 00:08:15 mrg Exp $     */
+/*     $NetBSD: pcb.h,v 1.16 2009/10/27 03:05:28 rmind Exp $   */
 
 /*-
  * Copyright (c) 1998 The NetBSD Foundation, Inc.
@@ -97,7 +97,7 @@
        uint64_t pcb_rsp;
        uint64_t pcb_rbp;
        uint64_t pcb_usersp;
-       uint64_t pcb_ldt_sel;
+       uint64_t pcb_unused;            /* unused */
        struct  savefpu pcb_savefpu __aligned(16); /* floating point state */
        void     *pcb_onfault;          /* copyin/out fault recovery */
        struct cpu_info *pcb_fpcpu;     /* cpu holding our fp state. */