diff --git a/repos/gems/run/decorator.run b/repos/gems/run/decorator.run
index fd372ee33..936f0e594 100644
--- a/repos/gems/run/decorator.run
+++ b/repos/gems/run/decorator.run
@@ -33,7 +33,7 @@ install_config {
 	</start>
 
 	<start name="drivers">
-		<resource name="RAM" quantum="32M"/>
+		<resource name="RAM" quantum="32M" constrain_phys="yes"/>
 		<binary name="init"/>
 		<route>
 			<service name="ROM" label="config"> <parent label="drivers.config"/> </service>
diff --git a/repos/gems/run/decorator_stress.run b/repos/gems/run/decorator_stress.run
index d4e448cdc..e91ceafe4 100644
--- a/repos/gems/run/decorator_stress.run
+++ b/repos/gems/run/decorator_stress.run
@@ -34,7 +34,7 @@ install_config {
 	</start>
 
 	<start name="drivers">
-		<resource name="RAM" quantum="32M"/>
+		<resource name="RAM" quantum="32M" constrain_phys="yes"/>
 		<binary name="init"/>
 		<route>
 			<service name="ROM" label="config"> <parent label="drivers.config"/> </service>
diff --git a/repos/gems/run/driver_manager.run b/repos/gems/run/driver_manager.run
index 47a76c279..52392f5d2 100644
--- a/repos/gems/run/driver_manager.run
+++ b/repos/gems/run/driver_manager.run
@@ -44,7 +44,7 @@ install_config {
 	</start>
 
 	<start name="drivers" caps="2500">
-		<resource name="RAM" quantum="64M"/>
+		<resource name="RAM" quantum="64M" constrain_phys="yes"/>
 		<binary name="init"/>
 		<route>
 			<service name="ROM" label="config"> <parent label="drivers.config"/> </service>
diff --git a/repos/gems/run/launcher.run b/repos/gems/run/launcher.run
index b80a6cf71..0eee52193 100644
--- a/repos/gems/run/launcher.run
+++ b/repos/gems/run/launcher.run
@@ -38,7 +38,7 @@ install_config {
 	</start>
 
 	<start name="drivers" caps="1000">
-		<resource name="RAM" quantum="32M"/>
+		<resource name="RAM" quantum="32M" constrain_phys="yes"/>
 		<binary name="init"/>
 		<route>
 			<service name="ROM" label="config"> <parent label="drivers.config"/> </service>
diff --git a/repos/gems/run/menu_view.run b/repos/gems/run/menu_view.run
index 683c000a7..996d1341d 100644
--- a/repos/gems/run/menu_view.run
+++ b/repos/gems/run/menu_view.run
@@ -35,7 +35,7 @@ install_config {
 	</start>
 
 	<start name="drivers" caps="1000">
-		<resource name="RAM" quantum="32M"/>
+		<resource name="RAM" quantum="32M" constrain_phys="yes"/>
 		<binary name="init"/>
 		<route>
 			<service name="ROM" label="config"> <parent label="drivers.config"/> </service>
diff --git a/repos/gems/run/nano3d.run b/repos/gems/run/nano3d.run
index 4c8b7e915..893a1dde6 100644
--- a/repos/gems/run/nano3d.run
+++ b/repos/gems/run/nano3d.run
@@ -27,7 +27,7 @@ append config {
 	<default caps="100"/>
 
 	<start name="drivers" caps="1000">
-		<resource name="RAM" quantum="32M"/>
+		<resource name="RAM" quantum="32M" constrain_phys="yes"/>
 		<binary name="init"/>
 		<route>
 			<service name="ROM" label="config"> <parent label="drivers.config"/> </service>
diff --git a/repos/gems/run/nit_fader.run b/repos/gems/run/nit_fader.run
index c9b15f20d..cb6d9d72f 100644
--- a/repos/gems/run/nit_fader.run
+++ b/repos/gems/run/nit_fader.run
@@ -30,7 +30,7 @@ install_config {
 	</start>
 
 	<start name="drivers">
-		<resource name="RAM" quantum="32M"/>
+		<resource name="RAM" quantum="32M" constrain_phys="yes"/>
 		<binary name="init"/>
 		<route>
 			<service name="ROM" label="config"> <parent label="drivers.config"/> </service>
diff --git a/repos/gems/run/wm.run b/repos/gems/run/wm.run
index 96718f6a8..406de95a3 100644
--- a/repos/gems/run/wm.run
+++ b/repos/gems/run/wm.run
@@ -38,7 +38,7 @@ install_config {
 	</start>
 
 	<start name="drivers" caps="1000">
-		<resource name="RAM" quantum="32M"/>
+		<resource name="RAM" quantum="32M" constrain_phys="yes"/>
 		<binary name="init"/>
 		<route>
 			<service name="ROM" label="config"> <parent label="drivers.config"/> </service>
diff --git a/repos/os/recipes/raw/drivers_interactive-pc/drivers.config b/repos/os/recipes/raw/drivers_interactive-pc/drivers.config
index 6bdf79ae7..2e4ed2457 100644
--- a/repos/os/recipes/raw/drivers_interactive-pc/drivers.config
+++ b/repos/os/recipes/raw/drivers_interactive-pc/drivers.config
@@ -20,7 +20,7 @@
 	<service name="Input">
 		<default-policy> <child name="input_filter"/> </default-policy> </service>
 
-	<start name="acpi_drv">
+	<start name="acpi_drv" caps="110">
 		<resource name="RAM" quantum="2M"/>
 		<route>
 			<service name="IO_MEM"> <parent/> </service>
@@ -75,7 +75,7 @@
 		</config>
 	</start>
 
-	<start name="fb_drv" caps="100">
+	<start name="fb_drv" caps="120">
 		<resource name="RAM" quantum="4M"/>
 		<provides><service name="Framebuffer"/></provides>
 		<route>
diff --git a/repos/ports/run/noux_bash.run b/repos/ports/run/noux_bash.run
index eedc88723..e9be3d02d 100644
--- a/repos/ports/run/noux_bash.run
+++ b/repos/ports/run/noux_bash.run
@@ -49,7 +49,7 @@ install_config {
 	</start>
 
 	<start name="drivers" caps="1000">
-		<resource name="RAM" quantum="32M"/>
+		<resource name="RAM" quantum="32M" constrain_phys="yes"/>
 		<binary name="init"/>
 		<route>
 			<service name="ROM" label="config"> <parent label="drivers.config"/> </service>
diff --git a/repos/ports/run/noux_vim.run b/repos/ports/run/noux_vim.run
index ab6658f78..d86788fa5 100644
--- a/repos/ports/run/noux_vim.run
+++ b/repos/ports/run/noux_vim.run
@@ -35,7 +35,7 @@ install_config {
 	</start>
 
 	<start name="drivers" caps="1000">
-		<resource name="RAM" quantum="32M"/>
+		<resource name="RAM" quantum="32M" constrain_phys="yes"/>
 		<binary name="init"/>
 		<route>
 			<service name="ROM" label="config"> <parent label="drivers.config"/> </service>