[Xen-changelog] [xen-unstable] x86: Fix mfn_to_virt() to cast MFN to address size.

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

# HG changeset patch
# User Keir Fraser <keir.fraser@xxxxxxxxxx>
# Date 1228304316 0
# Node ID 9a6153a89d6642555c9ed4dc386d243c3df23eab
# Parent  28d485613eb3666b7e060c10eee9777a93b9eded
x86: Fix mfn_to_virt() to cast MFN to address size.
Signed-off-by: Keir Fraser <keir.fraser@xxxxxxxxxx>
---
 xen/include/asm-x86/page.h |    2 +-
 1 files changed, 1 insertion(+), 1 deletion(-)

diff -r 28d485613eb3 -r 9a6153a89d66 xen/include/asm-x86/page.h
--- a/xen/include/asm-x86/page.h        Wed Dec 03 11:21:34 2008 +0000
+++ b/xen/include/asm-x86/page.h        Wed Dec 03 11:38:36 2008 +0000
@@ -228,7 +228,7 @@ void copy_page_sse2(void *, const void *
 
 /* Convert between Xen-heap virtual addresses and machine frame numbers. */
 #define virt_to_mfn(va)     (virt_to_maddr(va) >> PAGE_SHIFT)
-#define mfn_to_virt(mfn)    (maddr_to_virt(mfn << PAGE_SHIFT))
+#define mfn_to_virt(mfn)    (maddr_to_virt((paddr_t)(mfn) << PAGE_SHIFT))
 
 /* Convert between machine frame numbers and page-info structures. */
 #define mfn_to_page(mfn)    (frame_table + (mfn))

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