diff --git a/.gitlab-ci.d/check-patch.py b/.gitlab-ci.d/check-patch.py
index 5a14a25b13..0ff30ee077 100755
--- a/.gitlab-ci.d/check-patch.py
+++ b/.gitlab-ci.d/check-patch.py
@@ -33,8 +33,16 @@ ancestor = subprocess.check_output(["git", "merge-base",
 
 ancestor = ancestor.strip()
 
+log = subprocess.check_output(["git", "log", "--format=%H %s",
+                               ancestor + "..."],
+                              universal_newlines=True)
+
 subprocess.check_call(["git", "remote", "rm", "check-patch"])
 
+if log == "":
+    print("\nNo commits since %s, skipping checks\n" % ancestor)
+    sys.exit(0)
+
 errors = False
 
 print("\nChecking all commits since %s...\n" % ancestor)
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 5d6773efd2..3b15ae5c30 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -24,6 +24,7 @@ include:
   image: $CI_REGISTRY_IMAGE/qemu/$IMAGE:latest
   before_script:
     - JOBS=$(expr $(nproc) + 1)
+    - sed -i s,git.qemu.org/git,gitlab.com/qemu-project, .gitmodules
   script:
     - mkdir build
     - cd build
diff --git a/Makefile b/Makefile
index 4d1fa8bb3d..e7c1000f5c 100644
--- a/Makefile
+++ b/Makefile
@@ -146,9 +146,12 @@ endif
 # 4. Rules to bridge to other makefiles
 
 ifneq ($(NINJA),)
-NINJAFLAGS = $(if $V,-v,) \
+MAKE.n = $(findstring n,$(firstword $(MAKEFLAGS)))
+MAKE.k = $(findstring k,$(firstword $(MAKEFLAGS)))
+MAKE.q = $(findstring q,$(firstword $(MAKEFLAGS)))
+MAKE.nq = $(if $(word 2, $(MAKE.n) $(MAKE.q)),nq)
+NINJAFLAGS = $(if $V,-v) $(if $(MAKE.n), -n) $(if $(MAKE.k), -k0) \
         $(filter-out -j, $(lastword -j1 $(filter -l% -j%, $(MAKEFLAGS)))) \
-        $(subst -k, -k0, $(filter -n -k,$(MAKEFLAGS)))
 
 ninja-cmd-goals = $(or $(MAKECMDGOALS), all)
 ninja-cmd-goals += $(foreach t, $(.tests), $(.test.deps.$t))
@@ -165,7 +168,8 @@ $(ninja-targets): run-ninja
 # --output-sync line.
 run-ninja: config-host.mak
 ifneq ($(filter $(ninja-targets), $(ninja-cmd-goals)),)
-	+@$(NINJA) $(NINJAFLAGS) $(sort $(filter $(ninja-targets), $(ninja-cmd-goals))) | cat
+	+$(quiet-@)$(if $(MAKE.nq),@:, $(NINJA) \
+	   $(NINJAFLAGS) $(sort $(filter $(ninja-targets), $(ninja-cmd-goals))) | cat)
 endif
 endif
 
diff --git a/contrib/gitdm/group-map-individuals b/contrib/gitdm/group-map-individuals
index 641169fa63..36bbb77c39 100644
--- a/contrib/gitdm/group-map-individuals
+++ b/contrib/gitdm/group-map-individuals
@@ -23,3 +23,9 @@ vr_qemu@t-online.de
 nieklinnenbank@gmail.com
 devnexen@gmail.com
 pauldzim@gmail.com
+ani@anisinha.ca
+sundeep.lkml@gmail.com
+mrolnik@gmail.com
+huth@tuxfamily.org
+jhogan@kernel.org
+atar4qemu@gmail.com
diff --git a/scripts/checkpatch.pl b/scripts/checkpatch.pl
index 6ed34970f9..88c858f67c 100755
--- a/scripts/checkpatch.pl
+++ b/scripts/checkpatch.pl
@@ -392,7 +392,7 @@ if ($chk_branch) {
 
 	close $HASH;
 
-	die "$P: no revisions returned for revlist '$chk_branch'\n"
+	die "$P: no revisions returned for revlist '$ARGV[0]'\n"
 	    unless @patches;
 
 	my $i = 1;
diff --git a/tests/acceptance/reverse_debugging.py b/tests/acceptance/reverse_debugging.py
index b72fdf6cdc..be01aca217 100644
--- a/tests/acceptance/reverse_debugging.py
+++ b/tests/acceptance/reverse_debugging.py
@@ -14,6 +14,7 @@ from avocado import skipIf
 from avocado_qemu import BUILD_DIR
 from avocado.utils import gdb
 from avocado.utils import process
+from avocado.utils.network.ports import find_free_port
 from avocado.utils.path import find_command
 from boot_linux_console import LinuxKernelTest
 
@@ -33,7 +34,7 @@ class ReverseDebugging(LinuxKernelTest):
     STEPS = 10
     endian_is_le = True
 
-    def run_vm(self, record, shift, args, replay_path, image_path):
+    def run_vm(self, record, shift, args, replay_path, image_path, port):
         logger = logging.getLogger('replay')
         vm = self.get_vm()
         vm.set_console()
@@ -43,7 +44,7 @@ class ReverseDebugging(LinuxKernelTest):
         else:
             logger.info('replaying the execution...')
             mode = 'replay'
-            vm.add_args('-s', '-S')
+            vm.add_args('-gdb', 'tcp::%d' % port, '-S')
         vm.add_args('-icount', 'shift=%s,rr=%s,rrfile=%s,rrsnapshot=init' %
                     (shift, mode, replay_path),
                     '-net', 'none')
@@ -109,9 +110,10 @@ class ReverseDebugging(LinuxKernelTest):
         process.run(cmd)
 
         replay_path = os.path.join(self.workdir, 'replay.bin')
+        port = find_free_port()
 
         # record the log
-        vm = self.run_vm(True, shift, args, replay_path, image_path)
+        vm = self.run_vm(True, shift, args, replay_path, image_path, port)
         while self.vm_get_icount(vm) <= self.STEPS:
             pass
         last_icount = self.vm_get_icount(vm)
@@ -120,9 +122,9 @@ class ReverseDebugging(LinuxKernelTest):
         logger.info("recorded log with %s+ steps" % last_icount)
 
         # replay and run debug commands
-        vm = self.run_vm(False, shift, args, replay_path, image_path)
+        vm = self.run_vm(False, shift, args, replay_path, image_path, port)
         logger.info('connecting to gdbstub')
-        g = gdb.GDBRemote('127.0.0.1', 1234, False, False)
+        g = gdb.GDBRemote('127.0.0.1', port, False, False)
         g.connect()
         r = g.cmd(b'qSupported')
         if b'qXfer:features:read+' in r:
diff --git a/tests/docker/dockerfiles/centos7.docker b/tests/docker/dockerfiles/centos7.docker
index 8b273725ee..6f11af1989 100644
--- a/tests/docker/dockerfiles/centos7.docker
+++ b/tests/docker/dockerfiles/centos7.docker
@@ -31,7 +31,7 @@ ENV PACKAGES \
     perl-Test-Harness \
     pixman-devel \
     python3 \
-    SDL-devel \
+    SDL2-devel \
     spice-glib-devel \
     spice-server-devel \
     tar \
diff --git a/tests/docker/dockerfiles/centos8.docker b/tests/docker/dockerfiles/centos8.docker
index a589142114..54bc6d54cd 100644
--- a/tests/docker/dockerfiles/centos8.docker
+++ b/tests/docker/dockerfiles/centos8.docker
@@ -2,7 +2,7 @@ FROM centos:8.1.1911
 
 RUN dnf -y update
 ENV PACKAGES \
-    SDL-devel \
+    SDL2-devel \
     bzip2 \
     bzip2-devel \
     dbus-daemon \