From: Andrew Cooper <andrew.cooper3@citrix.com>
Date: Thu, 1 Jun 2017 11:15:22 +0000 (+0100)
Subject: hvm32: Fill in tss.cr3 for the default task
X-Git-Url: http://xenbits.xensource.com/gitweb?a=commitdiff_plain;h=424a269d48386f53c81600620ef3ea1c3b78dbce;p=people%2Fandrewcoop%2Fxen-test-framework.git

hvm32: Fill in tss.cr3 for the default task

This is necessary for 32bit tests in, which end up task switching back to the
default task.  %cr3 gets reloaded as part of a task switch, which causes a
triple fault for 32bit paged environments.

Signed-off-by: Andrew Cooper <andrew.cooper3@citrix.com>
---

diff --git a/arch/x86/hvm/traps.c b/arch/x86/hvm/traps.c
index 899b686..042afe0 100644
--- a/arch/x86/hvm/traps.c
+++ b/arch/x86/hvm/traps.c
@@ -36,6 +36,8 @@ env_tss tss __aligned(16) =
     .esp0 = _u(&boot_stack[2 * PAGE_SIZE]),
     .ss0  = __KERN_DS,
 
+    .cr3  = _u(cr3_target),
+
 #elif defined(__x86_64__)
 
     .rsp0 =   _u(&boot_stack[2 * PAGE_SIZE]),