mem_access: mem event additions for access

* Adds an ACCESS memory event type, with RESUME as the action.

* Refactors the bits in the memory event to store whether the memory event
  was a read, write, or execute (for access memory events only).  I used
  bits sparingly to keep the structure somewhat the same size.

* Modified VMX to report the needed information in its nested page fault.
  SVM is not implemented in this patch series.

Signed-off-by: Joe Epstein <jepstein98@gmail.com>
Acked-by: Keir Fraser <keir@xen.org>
Acked-by: Tim Deegan <Tim.Deegan@citrix.com>

1 files changed, 35 insertions, 0 deletions

diff --git a/xen/include/asm-x86/mem_access.h b/xen/include/asm-x86/mem_access.h
new file mode 100644
index 0000000000..4f038f97b0
--- /dev/null
+++ b/xen/include/asm-x86/mem_access.h
@@ -0,0 +1,35 @@
+/******************************************************************************
+ * include/asm-x86/mem_paging.h
+ *
+ * Memory access support.
+ *
+ * Copyright (c) 2011 Virtuata, Inc.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+
+int mem_access_domctl(struct domain *d, xen_domctl_mem_event_op_t *mec,
+                      XEN_GUEST_HANDLE(void) u_domctl);
+
+
+/*
+ * Local variables:
+ * mode: C
+ * c-set-style: "BSD"
+ * c-basic-offset: 4
+ * indent-tabs-mode: nil
+ * End:
+ */