[src/trunk]: src/sys/arch Declare gdt_size as const, simplifies.

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

details:   https://anonhg.NetBSD.org/src/rev/f11d17f32bcd
branches:  trunk
changeset: 828809:f11d17f32bcd
user:      maxv <maxv%NetBSD.org@localhost>
date:      Thu Jan 04 20:38:30 2018 +0000

description:
Declare gdt_size as const, simplifies.

diffstat:

 sys/arch/amd64/amd64/gdt.c |  20 +++++++++++---------
 sys/arch/i386/i386/gdt.c   |  20 +++++++++++---------
 2 files changed, 22 insertions(+), 18 deletions(-)

diffs (96 lines):

diff -r 6087516c2ebc -r f11d17f32bcd sys/arch/amd64/amd64/gdt.c
--- a/sys/arch/amd64/amd64/gdt.c        Thu Jan 04 14:02:23 2018 +0000
+++ b/sys/arch/amd64/amd64/gdt.c        Thu Jan 04 20:38:30 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: gdt.c,v 1.43 2017/09/10 10:51:13 maxv Exp $    */
+/*     $NetBSD: gdt.c,v 1.44 2018/01/04 20:38:30 maxv Exp $    */
 
 /*
  * Copyright (c) 1996, 1997, 2009 The NetBSD Foundation, Inc.
@@ -37,7 +37,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: gdt.c,v 1.43 2017/09/10 10:51:13 maxv Exp $");
+__KERNEL_RCSID(0, "$NetBSD: gdt.c,v 1.44 2018/01/04 20:38:30 maxv Exp $");
 
 #include "opt_multiprocessor.h"
 #include "opt_xen.h"
@@ -66,8 +66,15 @@
        size_t nslots;
 } gdt_bitmap_t;
 
-size_t gdt_size;                       /* size of GDT in bytes */
-static gdt_bitmap_t gdt_bitmap;                /* bitmap of busy slots */
+/* size of GDT in bytes */
+#ifdef XEN
+const size_t gdt_size = FIRST_RESERVED_GDT_BYTE;
+#else
+const size_t gdt_size = MAXGDTSIZ;
+#endif
+
+/* bitmap of busy slots */
+static gdt_bitmap_t gdt_bitmap;
 
 #if defined(USER_LDT) || !defined(XEN)
 static void set_sys_gdt(int, void *, size_t, int, int, int);
@@ -130,11 +137,6 @@
        struct cpu_info *ci = &cpu_info_primary;
 
        /* Initialize the global values */
-#ifdef XEN
-       gdt_size = FIRST_RESERVED_GDT_BYTE;
-#else
-       gdt_size = MAXGDTSIZ;
-#endif
        memset(&gdt_bitmap.busy, 0, sizeof(gdt_bitmap.busy));
        gdt_bitmap.nslots = NSLOTS(gdt_size);
 
diff -r 6087516c2ebc -r f11d17f32bcd sys/arch/i386/i386/gdt.c
--- a/sys/arch/i386/i386/gdt.c  Thu Jan 04 14:02:23 2018 +0000
+++ b/sys/arch/i386/i386/gdt.c  Thu Jan 04 20:38:30 2018 +0000
@@ -1,4 +1,4 @@
-/*     $NetBSD: gdt.c,v 1.67 2017/09/06 12:39:18 bouyer Exp $  */
+/*     $NetBSD: gdt.c,v 1.68 2018/01/04 20:38:31 maxv Exp $    */
 
 /*
  * Copyright (c) 1996, 1997, 2009 The NetBSD Foundation, Inc.
@@ -30,7 +30,7 @@
  */
 
 #include <sys/cdefs.h>
-__KERNEL_RCSID(0, "$NetBSD: gdt.c,v 1.67 2017/09/06 12:39:18 bouyer Exp $");
+__KERNEL_RCSID(0, "$NetBSD: gdt.c,v 1.68 2018/01/04 20:38:31 maxv Exp $");
 
 #include "opt_multiprocessor.h"
 #include "opt_xen.h"
@@ -54,8 +54,15 @@
        size_t nslots;
 } gdt_bitmap_t;
 
-size_t gdt_size;                       /* size of GDT in bytes */
-static gdt_bitmap_t gdt_bitmap;                /* bitmap of busy slots */
+/* size of GDT in bytes */
+#ifdef XEN
+const size_t gdt_size = FIRST_RESERVED_GDT_BYTE;
+#else
+const size_t gdt_size = MAXGDTSIZ;
+#endif
+
+/* bitmap of busy slots */
+static gdt_bitmap_t gdt_bitmap;
 
 #ifndef XEN
 static int ldt_count;  /* number of LDTs */
@@ -119,11 +126,6 @@
        struct cpu_info *ci = &cpu_info_primary;
 
        /* Initialize the global values */
-#ifdef XEN
-       gdt_size = FIRST_RESERVED_GDT_BYTE;
-#else
-       gdt_size = MAXGDTSIZ;
-#endif
        memset(&gdt_bitmap.busy, 0, sizeof(gdt_bitmap.busy));
        gdt_bitmap.nslots = NSLOTS(gdt_size);