diff -uNr qemu-5.1.0/accel/tcg/translate-all.c qemu-5.1.0.mod/accel/tcg/translate-all.c
--- qemu-5.1.0/accel/tcg/translate-all.c	2020-08-11 22:17:15.000000000 +0300
+++ qemu-5.1.0.mod/accel/tcg/translate-all.c	2020-09-05 17:06:07.327115262 +0300
@@ -47,6 +47,8 @@
 #include "exec/ram_addr.h"
 #endif
 
+#include <linux/mman.h>
+
 #include "exec/cputlb.h"
 #include "exec/tb-hash.h"
 #include "translate-all.h"
diff -uNr qemu-5.1.0/audio/ossaudio.c qemu-5.1.0.mod/audio/ossaudio.c
--- qemu-5.1.0/audio/ossaudio.c	2020-09-05 16:58:18.803736540 +0300
+++ qemu-5.1.0.mod/audio/ossaudio.c	2020-09-05 17:06:07.327115262 +0300
@@ -31,6 +31,8 @@
 #include "audio.h"
 #include "trace.h"
 
+#include <linux/mman.h>
+
 #define AUDIO_CAP "oss"
 #include "audio_int.h"
 
diff -uNr qemu-5.1.0/block/file-posix.c qemu-5.1.0.mod/block/file-posix.c
--- qemu-5.1.0/block/file-posix.c	2020-08-11 22:17:15.000000000 +0300
+++ qemu-5.1.0.mod/block/file-posix.c	2020-09-05 17:06:07.327115262 +0300
@@ -59,6 +59,7 @@
 #include <sys/dkio.h>
 #endif
 #ifdef __linux__
+#include <linux/mman.h>
 #include <sys/ioctl.h>
 #include <sys/param.h>
 #include <sys/syscall.h>
diff -uNr qemu-5.1.0/contrib/libvhost-user/libvhost-user.c qemu-5.1.0.mod/contrib/libvhost-user/libvhost-user.c
--- qemu-5.1.0/contrib/libvhost-user/libvhost-user.c	2020-08-11 22:17:15.000000000 +0300
+++ qemu-5.1.0.mod/contrib/libvhost-user/libvhost-user.c	2020-09-05 17:06:07.327115262 +0300
@@ -29,6 +29,7 @@
 #include "qemu/compiler.h"
 
 #if defined(__linux__)
+#include <linux/mman.h>
 #include <sys/syscall.h>
 #include <fcntl.h>
 #include <sys/ioctl.h>
diff -uNr qemu-5.1.0/hw/vfio/common.c qemu-5.1.0.mod/hw/vfio/common.c
--- qemu-5.1.0/hw/vfio/common.c	2020-08-11 22:17:15.000000000 +0300
+++ qemu-5.1.0.mod/hw/vfio/common.c	2020-09-05 17:06:07.331115270 +0300
@@ -24,6 +24,7 @@
 #include <linux/kvm.h>
 #endif
 #include <linux/vfio.h>
+#include <linux/mman.h>
 
 #include "hw/vfio/vfio-common.h"
 #include "hw/vfio/vfio.h"
diff -uNr qemu-5.1.0/hw/vfio/pci-quirks.c qemu-5.1.0.mod/hw/vfio/pci-quirks.c
--- qemu-5.1.0/hw/vfio/pci-quirks.c	2020-08-11 22:17:15.000000000 +0300
+++ qemu-5.1.0.mod/hw/vfio/pci-quirks.c	2020-09-05 17:07:16.623274533 +0300
@@ -27,6 +27,8 @@
 #include "pci.h"
 #include "trace.h"
 
+#include <linux/mman.h>
+
 /*
  * List of device ids/vendor ids for which to disable
  * option rom loading. This avoids the guest hangs during rom
diff -uNr qemu-5.1.0/hw/virtio/vhost-user.c qemu-5.1.0.mod/hw/virtio/vhost-user.c
--- qemu-5.1.0/hw/virtio/vhost-user.c	2020-08-11 22:17:15.000000000 +0300
+++ qemu-5.1.0.mod/hw/virtio/vhost-user.c	2020-09-05 17:06:07.331115270 +0300
@@ -32,6 +32,7 @@
 #include "standard-headers/linux/vhost_types.h"
 
 #ifdef CONFIG_LINUX
+#include <linux/mman.h>
 #include <linux/userfaultfd.h>
 #endif
 
diff -uNr qemu-5.1.0/linux-user/elfload.c qemu-5.1.0.mod/linux-user/elfload.c
--- qemu-5.1.0/linux-user/elfload.c	2020-09-05 17:01:16.823064611 +0300
+++ qemu-5.1.0.mod/linux-user/elfload.c	2020-09-05 17:06:07.331115270 +0300
@@ -2,6 +2,8 @@
 #include "qemu/osdep.h"
 #include <sys/param.h>
 
+#include <linux/mman.h>
+
 #include <sys/resource.h>
 #include <sys/shm.h>
 
diff -uNr qemu-5.1.0/linux-user/flatload.c qemu-5.1.0.mod/linux-user/flatload.c
--- qemu-5.1.0/linux-user/flatload.c	2020-08-11 22:17:15.000000000 +0300
+++ qemu-5.1.0.mod/linux-user/flatload.c	2020-09-05 17:06:07.331115270 +0300
@@ -35,6 +35,8 @@
 
 #include "qemu/osdep.h"
 
+#include <linux/mman.h>
+
 #include "qemu.h"
 #include "flat.h"
 #include "target_flat.h"
diff -uNr qemu-5.1.0/linux-user/i386/cpu_loop.c qemu-5.1.0.mod/linux-user/i386/cpu_loop.c
--- qemu-5.1.0/linux-user/i386/cpu_loop.c	2020-08-11 22:17:14.000000000 +0300
+++ qemu-5.1.0.mod/linux-user/i386/cpu_loop.c	2020-09-05 17:06:07.335115279 +0300
@@ -22,6 +22,8 @@
 #include "qemu.h"
 #include "cpu_loop-common.h"
 
+#include <linux/mman.h>
+
 /***********************************************************/
 /* CPUX86 core interface */
 
diff -uNr qemu-5.1.0/linux-user/mmap.c qemu-5.1.0.mod/linux-user/mmap.c
--- qemu-5.1.0/linux-user/mmap.c	2020-08-11 22:17:15.000000000 +0300
+++ qemu-5.1.0.mod/linux-user/mmap.c	2020-09-05 17:06:40.807186551 +0300
@@ -21,6 +21,8 @@
 #include "exec/log.h"
 #include "qemu.h"
 
+#include <linux/mman.h>
+
 static pthread_mutex_t mmap_mutex = PTHREAD_MUTEX_INITIALIZER;
 static __thread int mmap_lock_count;
 
diff -uNr qemu-5.1.0/linux-user/syscall.c qemu-5.1.0.mod/linux-user/syscall.c
--- qemu-5.1.0/linux-user/syscall.c	2020-09-05 17:02:57.910949156 +0300
+++ qemu-5.1.0.mod/linux-user/syscall.c	2020-09-05 17:06:07.335115279 +0300
@@ -36,6 +36,7 @@
 #include <sys/resource.h>
 #include <sys/swap.h>
 #include <linux/capability.h>
+#include <linux/mman.h>
 #include <sched.h>
 #include <sys/timex.h>
 #include <sys/socket.h>
diff -uNr qemu-5.1.0/migration/postcopy-ram.c qemu-5.1.0.mod/migration/postcopy-ram.c
--- qemu-5.1.0/migration/postcopy-ram.c	2020-08-11 22:17:15.000000000 +0300
+++ qemu-5.1.0.mod/migration/postcopy-ram.c	2020-09-05 17:06:07.335115279 +0300
@@ -31,6 +31,8 @@
 #include "trace.h"
 #include "hw/boards.h"
 
+#include <linux/mman.h>
+
 /* Arbitrary limit on size of each discard command,
  * keeps them around ~200 bytes
  */
diff -uNr qemu-5.1.0/util/memfd.c qemu-5.1.0.mod/util/memfd.c
--- qemu-5.1.0/util/memfd.c	2020-08-11 22:17:15.000000000 +0300
+++ qemu-5.1.0.mod/util/memfd.c	2020-09-05 17:06:07.335115279 +0300
@@ -32,6 +32,7 @@
 #include "qemu/host-utils.h"
 
 #if defined CONFIG_LINUX && !defined CONFIG_MEMFD
+#include <linux/mman.h>
 #include <sys/syscall.h>
 #include <asm/unistd.h>
 
diff -uNr qemu-5.1.0/util/mmap-alloc.c qemu-5.1.0.mod/util/mmap-alloc.c
--- qemu-5.1.0/util/mmap-alloc.c	2020-08-11 22:17:15.000000000 +0300
+++ qemu-5.1.0.mod/util/mmap-alloc.c	2020-09-05 17:06:07.335115279 +0300
@@ -10,7 +10,7 @@
  * later.  See the COPYING file in the top-level directory.
  */
 
-#ifdef CONFIG_LINUX
+#ifdef __linux__
 #include <linux/mman.h>
 #else  /* !CONFIG_LINUX */
 #define MAP_SYNC              0x0
diff -uNr qemu-5.1.0/util/oslib-posix.c qemu-5.1.0.mod/util/oslib-posix.c
--- qemu-5.1.0/util/oslib-posix.c	2020-08-11 22:17:15.000000000 +0300
+++ qemu-5.1.0.mod/util/oslib-posix.c	2020-09-05 17:06:07.335115279 +0300
@@ -41,6 +41,7 @@
 #include "qemu/cutils.h"
 
 #ifdef CONFIG_LINUX
+#include <linux/mman.h>
 #include <sys/syscall.h>
 #endif
 
diff -uNr qemu-5.1.0/util/vfio-helpers.c qemu-5.1.0.mod/util/vfio-helpers.c
--- qemu-5.1.0/util/vfio-helpers.c	2020-08-11 22:17:15.000000000 +0300
+++ qemu-5.1.0.mod/util/vfio-helpers.c	2020-09-05 17:06:07.335115279 +0300
@@ -13,6 +13,7 @@
 #include "qemu/osdep.h"
 #include <sys/ioctl.h>
 #include <linux/vfio.h>
+#include <linux/mman.h>
 #include "qapi/error.h"
 #include "exec/ramlist.h"
 #include "exec/cpu-common.h"
diff -uNr qemu-5.2.0/tests/vhost-user-bridge.c qemu-5.2.0.mod/tests/vhost-user-bridge.c
--- qemu-5.2.0/tests/vhost-user-bridge.c	2020-12-08 18:59:44.000000000 +0200
+++ qemu-5.2.0.mod/tests/vhost-user-bridge.c	2020-12-09 17:31:52.039910511 +0200
@@ -29,6 +29,8 @@
 
 #define _FILE_OFFSET_BITS 64
 
+#include <linux/mman.h>
+
 #include "qemu/osdep.h"
 #include "qemu/atomic.h"
 #include "qemu/ctype.h"
diff -uNr qemu-5.2.0/softmmu/physmem.c qemu-5.2.0.mod/softmmu/physmem.c
--- qemu-5.2.0/softmmu/physmem.c	2020-12-08 18:59:44.000000000 +0200
+++ qemu-5.2.0.mod/softmmu/physmem.c	2020-12-09 17:05:25.872459520 +0200
@@ -17,6 +17,8 @@
  * License along with this library; if not, see <http://www.gnu.org/licenses/>.
  */
 
+#include <linux/mman.h>
+
 #include "qemu/osdep.h"
 #include "qemu-common.h"
 #include "qapi/error.h"