8277854: The upper bound of GCCardSizeInBytes should be limited to 512 for 32-bit platforms

DamonFool · DamonFool · commit 3a4a94e5a830 · 2021-11-29T23:17:39.000Z
Reviewed-by: tschatzl, mli
diff --git a/src/hotspot/share/gc/shared/gc_globals.hpp b/src/hotspot/share/gc/shared/gc_globals.hpp
@@ -696,7 +696,7 @@
                                                                             \
   product(uint, GCCardSizeInBytes, 512,                                     \
           "Card table entry size (in bytes) for card based collectors")     \
-          range(128, 1024)                                                  \
+          range(128, NOT_LP64(512) LP64_ONLY(1024))                         \
           constraint(GCCardSizeInBytesConstraintFunc,AtParse)
   // end of GC_FLAGS
 

Original file line number	Diff line number	Diff line change
`@@ -696,7 +696,7 @@`
`696`	`696`	`\`
`697`	`697`	`product(uint, GCCardSizeInBytes, 512, \`
`698`	`698`	`"Card table entry size (in bytes) for card based collectors") \`
`699`		`- range(128, 1024) \`
	`699`	`+ range(128, NOT_LP64(512) LP64_ONLY(1024)) \`
`700`	`700`	`constraint(GCCardSizeInBytesConstraintFunc,AtParse)`
`701`	`701`	`// end of GC_FLAGS`
`702`	`702`