# HG changeset patch
# User yamahata@xxxxxxxxxxxxx
# Node ID 7711b51e2cea8a3804411ee8b3405757b6a8f212
# Parent  bc58172dd6da15b96709ffbb63592b3d7b1d331e
temporal work around to boot domU.
legacy device driver (e.g. i8042 keyboard) accesses to predefined region
to check its existance.
PATCHNAME: work_around_for_access_invalid_region

Signed-off-by: Isaku Yamahata <yamahata@xxxxxxxxxxxxx>

diff -r bc58172dd6da -r 7711b51e2cea xen/arch/ia64/xen/domain.c
--- a/xen/arch/ia64/xen/domain.c	Thu May 18 12:52:21 2006 +0900
+++ b/xen/arch/ia64/xen/domain.c	Thu May 18 13:52:56 2006 +0900
@@ -1158,7 +1158,10 @@ unsigned long lookup_domain_mpa(struct d
     tr_entry_print_all(&current->arch.dtlb, 1);
 #endif
 	mpafoo(mpaddr);
-	return 0;
+
+    //XXX This is a work around until the emulation memory access to a region
+    //    where memory or device are attached is implemented.
+    return pte_val(pfn_pte(0, __pgprot(__DIRTY_BITS | _PAGE_PL_2 | _PAGE_AR_RWX)));
 }
 
 #ifdef CONFIG_XEN_IA64_DOM0_VP