xen/xenpaging.blacklist.patch

Subject: xenpaging: prevent page-out of first 16MB

This is more a workaround than a bugfix:
Don't page out first 16MB of memory.
When the BIOS does its initialization process and xenpaging removes pages,
crashes will occour due to lack of support of xenpaging.

Signed-off-by: Olaf Hering <olaf@aepfle.de>

---
 tools/xenpaging/policy_default.c |    5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

Index: xen-4.0.2-testing/tools/xenpaging/policy_default.c
===================================================================
--- xen-4.0.2-testing.orig/tools/xenpaging/policy_default.c
+++ xen-4.0.2-testing/tools/xenpaging/policy_default.c
@@ -60,8 +60,9 @@ int policy_init(xenpaging_t *paging)
     for ( i = 0; i < MRU_SIZE; i++ )
         mru[i] = INVALID_MFN;
 
-    /* Don't page out page 0 */
-    set_bit(0, bitmap);
+    /* Don't page out first 16MB */
+    for ( i = 0; i < ((16*1024*1024)/4096); i++ )
+        set_bit(i, bitmap);
 
  out:
     return rc;