From e4b0743cf29ff7e2971b925bdd9f4b2c66aa252e Mon Sep 17 00:00:00 2001
From: Steffen Vogel <stvogel@eonerc.rwth-aachen.de>
Date: Sat, 9 Feb 2019 20:10:05 +0000
Subject: [PATCH] added compatability for 32bit ARM platforms

---
 common/lib/kernel/vfio.cpp | 14 ++++++++++++--
 common/lib/memory.cpp      |  2 +-
 2 files changed, 13 insertions(+), 3 deletions(-)

diff --git a/common/lib/kernel/vfio.cpp b/common/lib/kernel/vfio.cpp
index c97a845ae..6b12bb2f0 100644
--- a/common/lib/kernel/vfio.cpp
+++ b/common/lib/kernel/vfio.cpp
@@ -24,6 +24,11 @@
 
 #define _DEFAULT_SOURCE
 
+#ifdef __arm__
+  #define _LARGEFILE64_SOURCE 1
+  #define _FILE_OFFSET_BITS 64
+#endif
+
 #include <algorithm>
 #include <string>
 #include <sstream>
@@ -476,10 +481,15 @@ VfioDevice::regionMap(size_t index)
 	if (!(r->flags & VFIO_REGION_INFO_FLAG_MMAP))
 		return MAP_FAILED;
 
+	int flags = MAP_SHARED;
+
+#ifndef __arm__
+	flags |= MAP_SHARED;
+#endif
+
 	mappings[index] = mmap(nullptr, r->size,
 	                       PROT_READ | PROT_WRITE,
-	                       MAP_SHARED | MAP_32BIT,
-	                       fd, r->offset);
+	                       flags, fd, r->offset);
 
 	return mappings[index];
 }
diff --git a/common/lib/memory.cpp b/common/lib/memory.cpp
index bd1af926a..d2b6fb1d0 100644
--- a/common/lib/memory.cpp
+++ b/common/lib/memory.cpp
@@ -39,7 +39,7 @@ HostRam::HostRamAllocator::allocateBlock(size_t size)
 		size &= size_t(~0xFFF);
 	}
 
-#ifdef __linux__
+#if defined(__linux__) && !defined(__arm__)
 	const int mmap_flags = MAP_PRIVATE | MAP_ANONYMOUS | MAP_32BIT;
 #else
 	const int mmap_flags = MAP_PRIVATE | MAP_ANONYMOUS;