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--- a/src/hotspot/os/linux/os_linux.cpp
+++ b/src/hotspot/os/linux/os_linux.cpp
@@ -2878,6 +2878,10 @@ void os::pd_commit_memory_or_exit(char*
// Note that the value for MAP_FIXED_NOREPLACE differs between architectures, but all architectures
// supported by OpenJDK share the same flag value.
#define MAP_FIXED_NOREPLACE_value 0x100000
+// on ALPHA, that triggers with 0x1000000 == 0x100000. why?
+#if defined(ALPHA) && defined(MAP_FIXED_NOREPLACE)
+#undef MAP_FIXED_NOREPLACE
+#endif
#ifndef MAP_FIXED_NOREPLACE
#define MAP_FIXED_NOREPLACE MAP_FIXED_NOREPLACE_value
#else
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