[Xen-changelog] [IA64] dummy IO memmap entry

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

# HG changeset patch
# User awilliam@xxxxxxxxxxx
# Node ID dc99944b9bd0bd1984d869bdd8db3fde808ce5f8
# Parent  2f4911432398044adbaeee02dbd9a7f8a6300b4d
[IA64] dummy IO memmap entry

Create a dummy IO ports memmap entry for domU, so that
IO accesses are trapped by Xen.  Otherwise, they could
pollute memory.

Signed-off-by: Tristan Gingold <tristan.gingold@xxxxxxxx>

diff -r 2f4911432398 -r dc99944b9bd0 xen/arch/ia64/xen/dom_fw.c
--- a/xen/arch/ia64/xen/dom_fw.c        Wed Mar 15 15:20:28 2006
+++ b/xen/arch/ia64/xen/dom_fw.c        Wed Mar 15 15:22:03 2006
@@ -860,7 +860,10 @@
                /* hypercall patches live here, masquerade as reserved PAL 
memory */
                
MAKE_MD(EFI_PAL_CODE,EFI_MEMORY_WB,HYPERCALL_START,HYPERCALL_END, 1);
                
MAKE_MD(EFI_CONVENTIONAL_MEMORY,EFI_MEMORY_WB,HYPERCALL_END,maxmem, 1);
-               MAKE_MD(EFI_RESERVED_TYPE,0,0,0,0);
+               /* Create a dummy entry for IO ports, so that IO accesses are
+                  trapped by Xen.  */
+               MAKE_MD(EFI_MEMORY_MAPPED_IO_PORT_SPACE,EFI_MEMORY_UC,
+                       0x00000ffffc000000, 0x00000fffffffffff, 1);
                MAKE_MD(EFI_RESERVED_TYPE,0,0,0,0);
        }
 

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