From 1786f200587384d595851972b2f4b9bdd70175ac Mon Sep 17 00:00:00 2001
From: Gabe Black <gblack@eecs.umich.edu>
Date: Fri, 27 Feb 2009 09:23:27 -0800
Subject: [PATCH] X86: Set an initial value for the LDT selector.

---
 src/arch/x86/process.cc | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/arch/x86/process.cc b/src/arch/x86/process.cc
index 22030cbfa..54d5d07ab 100644
--- a/src/arch/x86/process.cc
+++ b/src/arch/x86/process.cc
@@ -299,6 +299,9 @@ I386LiveProcess::startup()
         tc->setMiscRegNoEffect(MISCREG_TSG_EFF_BASE, _gdtStart);
         tc->setMiscRegNoEffect(MISCREG_TSG_LIMIT, _gdtStart + _gdtSize - 1);
 
+        // Set the LDT selector to 0 to deactivate it.
+        tc->setMiscRegNoEffect(MISCREG_TSL, 0);
+
         //Set up the registers that describe the operating mode.
         CR0 cr0 = 0;
         cr0.pg = 1; // Turn on paging.