[Xen-changelog] SVM patch to add BP exception intercept support.

[Xen patchbot -unstable <patchbot-unstable@xxxxxxxxxxxxxxxxxxx>]

# HG changeset patch
# User kaf24@xxxxxxxxxxxxxxxxxxxx
# Node ID b77ebfaa72b200af0cdfc38dd8f7dbe274e5e386
# Parent  137b60a47d139dfaa7d202edb612bcaa1c595801
SVM patch to add BP exception intercept support.

Signed-off-by: Tom Woller <thomas.woller@xxxxxxx>

diff -r 137b60a47d13 -r b77ebfaa72b2 xen/arch/x86/hvm/svm/svm.c
--- a/xen/arch/x86/hvm/svm/svm.c        Thu Apr 13 10:07:28 2006
+++ b/xen/arch/x86/hvm/svm/svm.c        Thu Apr 13 10:08:20 2006
@@ -2588,13 +2588,18 @@
          */
         break;
 
+    case VMEXIT_EXCEPTION_BP:
 #ifdef XEN_DEBUGGER
-    case VMEXIT_EXCEPTION_BP:
         svm_debug_save_cpu_user_regs(&regs);
         pdb_handle_exception(3, &regs, 1);
         svm_debug_restore_cpu_user_regs(&regs);
-        break;
+#else
+        if ( test_bit(_DOMF_debugging, &v->domain->domain_flags) )
+            domain_pause_for_debugger();
+        else 
+            svm_inject_exception(vmcb, TRAP_int3, 0, 0);
 #endif
+        break;
 
     case VMEXIT_EXCEPTION_NM:
         svm_do_no_device_fault(vmcb);

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