Free TSS on the stack of the dead process.

In order to do that we have to remove all sleeping parts: sleeping
memory allocation and a sleeping lock.  Thus we're moving this code
to the spinning lock (mutex) and getting rid of the GDT grow code.
Downside is that now we're pre-allocating 64kb of memory per CPU
from the start, but this might be optimized in future.

This also unifies GDT code and MAXGDTSIZ define across i386 and amd64.

With help from mickey.

ok toby, art

1 files changed, 4 insertions, 11 deletions

diff --git a/sys/arch/i386/include/gdt.h b/sys/arch/i386/include/gdt.h
index 1b1ac72c88c..b34872d6ff3 100644
--- a/sys/arch/i386/include/gdt.h
+++ b/sys/arch/i386/include/gdt.h
@@ -1,4 +1,4 @@
-/*	$OpenBSD: gdt.h,v 1.11 2008/06/26 05:42:10 ray Exp $	*/
+/*	$OpenBSD: gdt.h,v 1.12 2009/02/03 11:24:19 mikeb Exp $	*/
 /*	$NetBSD: gdt.h,v 1.7.10.6 2002/08/19 01:22:36 sommerfeld Exp $	*/
 
 /*-
@@ -50,15 +50,8 @@ void setgdt(int, void *, size_t, int, int, int, int);
 #endif
 
 /*
- * The initial GDT size (as a descriptor count), and the maximum
- * GDT size possible.
- *
- * These are actually not arbitrary.  To start with, they have to be
- * multiples of 512 and at least 512, in order to work with the
- * allocation strategy set forth by gdt_init and gdt_grow.  Then, the
- * max cannot exceed 65536 since the selector field of a descriptor is
- * just 16 bits, and used as free list link.
+ * Maximum GDT size.  It cannot exceed 65536 since the selector field of
+ * a descriptor is just 16 bits, and used as free list link.
  */
 
-#define MINGDTSIZ 512
-#define MAXGDTSIZ 8192
+#define MAXGDTSIZ 65536