From: kfraser@localhost.localdomain <kfraser@localhost.localdomain>
Date: Wed, 29 Aug 2007 14:47:55 +0000 (+0100)
Subject: ioemu: Avoid unaligned guest memory accesses on ia64.
X-Git-Tag: archive/raspbian/4.8.0-1+rpi1~1^2~14987^2~49
X-Git-Url: https://dgit.raspbian.org/%22http:/www.example.com/cgi/%22https://%22%22/%22http:/www.example.com/cgi/%22https:/%22%22?a=commitdiff_plain;h=067b09326e896d93ca4e0bd240f771a03e51999a;p=xen.git

ioemu: Avoid unaligned guest memory accesses on ia64.
Signed-off-by: Alex Williamson <alex.williamson@hp.com>
Signed-off-by: Keir Fraser <keir@xensource.com>
---

diff --git a/tools/ioemu/target-i386-dm/exec-dm.c b/tools/ioemu/target-i386-dm/exec-dm.c
index 6a5eb5eaaa..0655eaaa2f 100644
--- a/tools/ioemu/target-i386-dm/exec-dm.c
+++ b/tools/ioemu/target-i386-dm/exec-dm.c
@@ -470,6 +470,12 @@ static void memcpy_words(void *dst, void *src, size_t n)
 #else
 static void memcpy_words(void *dst, void *src, size_t n)
 {
+    /* Some architectures do not like unaligned accesses. */
+    if (((unsigned long)dst | (unsigned long)src) & 3) {
+        memcpy(dst, src, n);
+        return;
+    }
+
     while (n >= sizeof(uint32_t)) {
         *((uint32_t *)dst) = *((uint32_t *)src);
         dst = ((uint32_t *)dst) + 1;