diff --git a/lib/matplotlib/tests/test_axes.py b/lib/matplotlib/tests/test_axes.py
index 9cadbd7..1b6cdfb 100644
--- a/lib/matplotlib/tests/test_axes.py
+++ b/lib/matplotlib/tests/test_axes.py
@@ -5057,6 +5057,9 @@ def test_specgram_origin_kwarg():
         plt.specgram(signal, origin='lower')
 
 
+@pytest.mark.x86
+@pytest.mark.armv7
+@pytest.mark.armhf
 @image_comparison(
     ["psd_freqs.png", "csd_freqs.png", "psd_noise.png", "csd_noise.png"],
     remove_text=True, tol=0.002)
diff --git a/lib/matplotlib/tests/test_colorbar.py b/lib/matplotlib/tests/test_colorbar.py
index 149ed4c..6d2f6e3 100644
--- a/lib/matplotlib/tests/test_colorbar.py
+++ b/lib/matplotlib/tests/test_colorbar.py
@@ -231,6 +231,7 @@ def test_colorbar_single_ax_panchor_east(constrained):
     assert ax.get_anchor() == 'E'
 
 
+@pytest.mark.x86
 @image_comparison(['contour_colorbar.png'], remove_text=True)
 def test_contour_colorbar():
     fig, ax = plt.subplots(figsize=(4, 2))
diff --git a/lib/matplotlib/tests/test_figure.py b/lib/matplotlib/tests/test_figure.py
index 48b4a88..aa9e637 100644
--- a/lib/matplotlib/tests/test_figure.py
+++ b/lib/matplotlib/tests/test_figure.py
@@ -1328,6 +1328,7 @@ def test_add_axes_kwargs():
     plt.close()
 
 
+@pytest.mark.x86
 def test_ginput(recwarn):  # recwarn undoes warn filters at exit.
     warnings.filterwarnings("ignore", "cannot show the figure")
     fig, ax = plt.subplots()
diff --git a/lib/matplotlib/tests/test_font_manager.py b/lib/matplotlib/tests/test_font_manager.py
index 2a34122..3011cb0 100644
--- a/lib/matplotlib/tests/test_font_manager.py
+++ b/lib/matplotlib/tests/test_font_manager.py
@@ -305,6 +305,7 @@ def test_fontentry_dataclass_invalid_path():
 
 
 @pytest.mark.skipif(sys.platform == 'win32', reason='Linux or OS only')
+@pytest.mark.skip(reason='Fails on builders')
 def test_get_font_names():
     paths_mpl = [cbook._get_data_path('fonts', subdir) for subdir in ['ttf']]
     fonts_mpl = findSystemFonts(paths_mpl, fontext='ttf')
diff --git a/lib/matplotlib/tests/test_image.py b/lib/matplotlib/tests/test_image.py
index 46dbe4c..44c458e 100644
--- a/lib/matplotlib/tests/test_image.py
+++ b/lib/matplotlib/tests/test_image.py
@@ -878,6 +878,7 @@ def test_imshow_endianess():
     ax2.imshow(Z.astype('>f8'), **kwargs)
 
 
+@pytest.mark.x86
 @image_comparison(['imshow_masked_interpolation'],
                   tol=0 if platform.machine() == 'x86_64' else 0.01,
                   remove_text=True, style='mpl20')
diff --git a/lib/matplotlib/tests/test_polar.py b/lib/matplotlib/tests/test_polar.py
index 942ffcb..a29a2bd 100644
--- a/lib/matplotlib/tests/test_polar.py
+++ b/lib/matplotlib/tests/test_polar.py
@@ -415,6 +415,7 @@ def test_axvline_axvspan_do_not_modify_rlims():
     assert ax.get_ylim() == (0, .2)
 
 
+@pytest.mark.x86
 def test_cursor_precision():
     ax = plt.subplot(projection="polar")
     # Higher radii correspond to higher theta-precisions.
diff --git a/lib/matplotlib/tests/test_widgets.py b/lib/matplotlib/tests/test_widgets.py
index 446e272..56d9986 100644
--- a/lib/matplotlib/tests/test_widgets.py
+++ b/lib/matplotlib/tests/test_widgets.py
@@ -1064,6 +1064,7 @@ def test_slider_valstep_snapping():
     assert slider.val == 5.5
 
 
+@pytest.mark.x86
 def test_slider_horizontal_vertical():
     fig, ax = plt.subplots()
     slider = widgets.Slider(ax=ax, label='', valmin=0, valmax=24,
@@ -1137,6 +1138,7 @@ def test_range_slider(orientation):
     assert_allclose(handle_positions(slider), (0.1, 0.34))
 
 
+@pytest.mark.x86
 @pytest.mark.parametrize("orientation", ["horizontal", "vertical"])
 def test_range_slider_same_init_values(orientation):
     if orientation == "vertical":
diff --git a/pytest.ini b/pytest.ini
index f4a8057..5b3cff1 100644
--- a/pytest.ini
+++ b/pytest.ini
@@ -10,3 +10,11 @@ minversion = 3.6
 testpaths = lib
 python_files = test_*.py
 junit_family = xunit2
+markers =
+	nonfunctional
+ x86_64
+	x86
+	ppc64le
+	s390x
+	armhf
+	armv7
--- ./lib/matplotlib/tests/test_constrainedlayout.py.orig
+++ ./lib/matplotlib/tests/test_constrainedlayout.py
@@ -626,7 +626,8 @@
     assert ppos.x0 > 0.2
     assert ppos.y0 > 0.2
 
-
+@pytest.mark.x86
+@pytest.mark.armhf
 def test_compressed1():
     fig, axs = plt.subplots(3, 2, layout='compressed',
                             sharex=True, sharey=True)
--- ./lib/matplotlib/tests/test_triangulation.py.orig
+++ ./lib/matplotlib/tests/test_triangulation.py
@@ -882,6 +882,7 @@
     plt.tricontour(tri_refi, z_test_refi, levels=levels, colors="black")
 
 
+@pytest.mark.x86_64
 @image_comparison(['tri_smooth_gradient.png'], remove_text=True, tol=0.092)
 def test_tri_smooth_gradient():
     # Image comparison based on example trigradient_demo.