8245215: Obsolete InitialBootClassLoaderMetaspaceSize and UseLargePagesInMetaspace

Reviewed-by: lfoltan, ccheung, stuefe, coleenp

Author: Harold Seigel

src/hotspot/share/runtime/arguments.cpp

@@ -529,8 +529,6 @@ static SpecialFlag const special_jvm_flags[] = {
   { "BiasedLockingDecayTime",              JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
   { "UseOptoBiasInlining",                 JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
   { "PrintPreciseBiasedLockingStatistics", JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
-  { "InitialBootClassLoaderMetaspaceSize", JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
-  { "UseLargePagesInMetaspace",            JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
   { "CriticalJNINatives",                  JDK_Version::jdk(16), JDK_Version::jdk(17), JDK_Version::jdk(18) },
 
   // --- Deprecated alias flags (see also aliased_jvm_flags) - sorted by obsolete_in then expired_in:
@@ -553,6 +551,8 @@ static SpecialFlag const special_jvm_flags[] = {
   { "UseNewFieldLayout",             JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
   { "UseSemaphoreGCThreadsSynchronization", JDK_Version::undefined(), JDK_Version::jdk(16), JDK_Version::jdk(17) },
   { "ForceNUMA",                     JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
+  { "InitialBootClassLoaderMetaspaceSize", JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
+  { "UseLargePagesInMetaspace",            JDK_Version::jdk(15), JDK_Version::jdk(16), JDK_Version::jdk(17) },
   { "InsertMemBarAfterArraycopy",    JDK_Version::undefined(), JDK_Version::jdk(16), JDK_Version::jdk(17) },
   { "Debugging",                     JDK_Version::undefined(), JDK_Version::jdk(16), JDK_Version::jdk(17) },
   { "UseRDPCForConstantTableBase",   JDK_Version::undefined(), JDK_Version::jdk(16), JDK_Version::jdk(17) },

src/hotspot/share/runtime/globals.hpp

@@ -197,10 +197,6 @@ const intx ObjectAlignmentInBytes = 8;
   develop(bool, LargePagesIndividualAllocationInjectError, false,           \
           "Fail large pages individual allocation")                         \
                                                                             \
-  product(bool, UseLargePagesInMetaspace, false,                            \
-          "(Deprecated) Use large page memory in metaspace. "               \
-          "Only used if UseLargePages is enabled.")                         \
-                                                                            \
   product(bool, UseNUMA, false,                                             \
           "Use NUMA if available")                                          \
                                                                             \
@@ -946,11 +942,6 @@ const intx ObjectAlignmentInBytes = 8;
   product(bool, IgnoreEmptyClassPaths, false,                               \
           "Ignore empty path elements in -classpath")                       \
                                                                             \
-  product(size_t, InitialBootClassLoaderMetaspaceSize,                      \
-          NOT_LP64(2200*K) LP64_ONLY(4*M),                                  \
-          "(Deprecated) Initial size of the boot class loader data metaspace") \
-          range(30*K, max_uintx/BytesPerWord)                               \
-                                                                            \
   product(bool, PrintHeapAtSIGBREAK, true,                                  \
           "Print heap layout in response to SIGBREAK")                      \
                                                                             \

test/hotspot/jtreg/runtime/CompressedOops/CompressedClassPointers.java

@@ -120,23 +120,6 @@ public static void largePagesForHeapTest() throws Exception {
         output.shouldHaveExitValue(0);
     }
 
-    // Using large pages for heap and metaspace.
-    // Note that this is still unexciting since the compressed class space always uses small pages;
-    // UseLargePagesInMetaspace only affects non-class metaspace.
-    public static void largePagesForHeapAndMetaspaceTest() throws Exception {
-        ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
-            "-XX:+UnlockDiagnosticVMOptions",
-            "-Xmx128m",
-            "-XX:+UseLargePages", "-XX:+UseLargePagesInMetaspace",
-            logging_option,
-            "-XX:+VerifyBeforeGC", "-version");
-        OutputAnalyzer output = new OutputAnalyzer(pb.start());
-        if (testNarrowKlassBase()) {
-            output.shouldContain("Narrow klass base:");
-        }
-        output.shouldHaveExitValue(0);
-    }
-
     public static void heapBaseMinAddressTest() throws Exception {
         ProcessBuilder pb = ProcessTools.createJavaProcessBuilder(
             "-XX:HeapBaseMinAddress=1m",
@@ -311,7 +294,6 @@ public static void main(String[] args) throws Exception {
         smallHeapTestWith1G();
         largeHeapTest();
         largePagesForHeapTest();
-        largePagesForHeapAndMetaspaceTest();
         heapBaseMinAddressTest();
         sharingTest();