diff --git a/dexpreopt/config.go b/dexpreopt/config.go
index 63d55df..2a929c5 100644
--- a/dexpreopt/config.go
+++ b/dexpreopt/config.go
@@ -22,7 +22,8 @@
 )
 
 // GlobalConfig stores the configuration for dex preopting. The fields are set
-// from product variables via dex_preopt_config.mk.
+// from product variables via dex_preopt_config.mk, except for SoongConfig
+// which come from CreateGlobalSoongConfig.
 type GlobalConfig struct {
 	DisablePreopt        bool     // disable preopt for all modules
 	DisablePreoptModules []string // modules with preopt disabled by product-specific config
@@ -81,6 +82,8 @@
 	BootFlags         string               // extra flags to pass to dex2oat for the boot image
 	Dex2oatImageXmx   string               // max heap size for dex2oat for the boot image
 	Dex2oatImageXms   string               // initial heap size for dex2oat for the boot image
+
+	SoongConfig GlobalSoongConfig // settings read from dexpreopt_soong.config
 }
 
 // GlobalSoongConfig contains the global config that is generated from Soong,
@@ -177,9 +180,11 @@
 }
 
 // LoadGlobalConfig reads the global dexpreopt.config file into a GlobalConfig
-// struct. LoadGlobalConfig is used directly in Soong and in dexpreopt_gen
-// called from Make to read the $OUT/dexpreopt.config written by Make.
-func LoadGlobalConfig(ctx android.PathContext, data []byte) (GlobalConfig, error) {
+// struct, except the SoongConfig field which is set from the provided
+// soongConfig argument. LoadGlobalConfig is used directly in Soong and in
+// dexpreopt_gen called from Make to read the $OUT/dexpreopt.config written by
+// Make.
+func LoadGlobalConfig(ctx android.PathContext, data []byte, soongConfig GlobalSoongConfig) (GlobalConfig, error) {
 	type GlobalJSONConfig struct {
 		GlobalConfig
 
@@ -199,6 +204,10 @@
 	config.GlobalConfig.DirtyImageObjects = android.OptionalPathForPath(constructPath(ctx, config.DirtyImageObjects))
 	config.GlobalConfig.BootImageProfiles = constructPaths(ctx, config.BootImageProfiles)
 
+	// Set this here to force the caller to provide a value for this struct (from
+	// either CreateGlobalSoongConfig or LoadGlobalSoongConfig).
+	config.GlobalConfig.SoongConfig = soongConfig
+
 	return config.GlobalConfig, nil
 }
 
@@ -244,16 +253,9 @@
 	return config.ModuleConfig, nil
 }
 
-// createGlobalSoongConfig creates a GlobalSoongConfig from the current context.
+// CreateGlobalSoongConfig creates a GlobalSoongConfig from the current context.
 // Should not be used in dexpreopt_gen.
-func createGlobalSoongConfig(ctx android.ModuleContext) GlobalSoongConfig {
-	if ctx.Config().TestProductVariables != nil {
-		// If we're called in a test there'll be a confusing error from the path
-		// functions below that gets reported without a stack trace, so let's panic
-		// properly with a more helpful message.
-		panic("This should not be called from tests. Please call GlobalSoongConfigForTests somewhere in the test setup.")
-	}
-
+func CreateGlobalSoongConfig(ctx android.PathContext) GlobalSoongConfig {
 	// Default to debug version to help find bugs.
 	// Set USE_DEX2OAT_DEBUG to false for only building non-debug versions.
 	var dex2oatBinary string
@@ -274,26 +276,6 @@
 	}
 }
 
-var globalSoongConfigOnceKey = android.NewOnceKey("DexpreoptGlobalSoongConfig")
-
-// GetGlobalSoongConfig creates a GlobalSoongConfig the first time it's called,
-// and later returns the same cached instance.
-func GetGlobalSoongConfig(ctx android.ModuleContext) GlobalSoongConfig {
-	globalSoong := ctx.Config().Once(globalSoongConfigOnceKey, func() interface{} {
-		return createGlobalSoongConfig(ctx)
-	}).(GlobalSoongConfig)
-	return globalSoong
-}
-
-// GetCachedGlobalSoongConfig returns a cached GlobalSoongConfig created by an
-// earlier GetGlobalSoongConfig call. This function works with any context
-// compatible with a basic PathContext, since it doesn't try to create a
-// GlobalSoongConfig (which requires a full ModuleContext). It will panic if
-// called before the first GetGlobalSoongConfig call.
-func GetCachedGlobalSoongConfig(ctx android.PathContext) GlobalSoongConfig {
-	return ctx.Config().Get(globalSoongConfigOnceKey).(GlobalSoongConfig)
-}
-
 type globalJsonSoongConfig struct {
 	Profman          string
 	Dex2oat          string
@@ -328,7 +310,7 @@
 }
 
 func (s *globalSoongConfigSingleton) GenerateBuildActions(ctx android.SingletonContext) {
-	config := GetCachedGlobalSoongConfig(ctx)
+	config := CreateGlobalSoongConfig(ctx)
 	jc := globalJsonSoongConfig{
 		Profman:          config.Profman.String(),
 		Dex2oat:          config.Dex2oat.String(),
@@ -355,7 +337,7 @@
 }
 
 func (s *globalSoongConfigSingleton) MakeVars(ctx android.MakeVarsContext) {
-	config := GetCachedGlobalSoongConfig(ctx)
+	config := CreateGlobalSoongConfig(ctx)
 
 	ctx.Strict("DEX2OAT", config.Dex2oat.String())
 	ctx.Strict("DEXPREOPT_GEN_DEPS", strings.Join([]string{
@@ -408,14 +390,7 @@
 		BootFlags:                          "",
 		Dex2oatImageXmx:                    "",
 		Dex2oatImageXms:                    "",
-	}
-}
-
-func GlobalSoongConfigForTests(config android.Config) GlobalSoongConfig {
-	// Install the test GlobalSoongConfig in the Once cache so that later calls to
-	// Get(Cached)GlobalSoongConfig returns it without trying to create a real one.
-	return config.Once(globalSoongConfigOnceKey, func() interface{} {
-		return GlobalSoongConfig{
+		SoongConfig: GlobalSoongConfig{
 			Profman:          android.PathForTesting("profman"),
 			Dex2oat:          android.PathForTesting("dex2oat"),
 			Aapt:             android.PathForTesting("aapt"),
@@ -423,6 +398,6 @@
 			Zip2zip:          android.PathForTesting("zip2zip"),
 			ManifestCheck:    android.PathForTesting("manifest_check"),
 			ConstructContext: android.PathForTesting("construct_context.sh"),
-		}
-	}).(GlobalSoongConfig)
+		},
+	}
 }