src/hotspot/cpu/x86/vm_version_x86.cpp

@@ -607,10 +607,13 @@
   guarantee(_cpuid_info.std_cpuid1_edx.bits.clflush != 0, "clflush is not supported");
   // clflush_size is size in quadwords (8 bytes).
   guarantee(_cpuid_info.std_cpuid1_ebx.bits.clflush_size == 8, "such clflush size is not supported");
 #endif
 
+  // publish data cache line flush size to generic field
+  _data_cache_line_flush_size = _cpuid_info.std_cpuid1_ebx.bits.clflush_size * 8;
+
   // If the OS doesn't support SSE, we can't use this feature even if the HW does
   if (!os::supports_sse())
     _features &= ~(CPU_SSE|CPU_SSE2|CPU_SSE3|CPU_SSSE3|CPU_SSE4A|CPU_SSE4_1|CPU_SSE4_2);
 
   if (UseSSE < 4) {