QEMU-system ISA: rv64imafdcvh_zicbom_zicboz_zicntr_zicsr_zifencei_zihintntl_zihintpause_zihpm_zacas_zawrs_zfa_zfh_zfhmin_zca_zcd_zba_zbb_zbc_zbkb_zbs_zvbb_zve32f_zve32x_zve64d_zve64f_zve64x_zvkb_zvkned_zvknhb_zvkt_sstc

$ java -XX:+UnlockExperimentalVMOptions -XX:+PrintFlagsFinal -version | grep Zvkn
     bool UseZvkn = true {ARCH experimental} {default}
openjdk version "25-internal" 2025-09-16
OpenJDK Runtime Environment (fastdebug build 25-internal-adhoc.ubuntu.jdk)
OpenJDK 64-Bit Server VM (fastdebug build 25-internal-adhoc.ubuntu.jdk, mixed mode, sharing)

$ make test TEST="compiler/cpuflags/TestAESIntrinsicsOnUnsupportedConfig.java"

```
java.lang.AssertionError: Expected message not found: 'warning: AES instructions are not available on this CPU'.
Case testUseAES failed
        at jdk.test.lib.cli.CommandLineOptionTest.verifyOutput(CommandLineOptionTest.java:159)
        at compiler.cpuflags.TestAESIntrinsicsOnUnsupportedConfig.testUseAES(TestAESIntrinsicsOnUnsupportedConfig.java:96)
        at compiler.cpuflags.TestAESIntrinsicsOnUnsupportedConfig.runTestCases(TestAESIntrinsicsOnUnsupportedConfig.java:54)
        at compiler.cpuflags.TestAESIntrinsicsOnUnsupportedConfig.main(TestAESIntrinsicsOnUnsupportedConfig.java:106)
        at java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
        at java.base/java.lang.reflect.Method.invoke(Method.java:565)
        at com.sun.javatest.regtest.agent.MainWrapper$MainTask.run(MainWrapper.java:138)
        at java.base/java.lang.Thread.run(Thread.java:1447)
Caused by: java.lang.RuntimeException: 'warning: AES instructions are not available on this CPU' missing from stdout/stderr
        at jdk.test.lib.process.OutputAnalyzer.shouldMatch(OutputAnalyzer.java:372)
        at jdk.test.lib.cli.CommandLineOptionTest.verifyOutput(CommandLineOptionTest.java:154)
        ... 7 more

JavaTest Message: Test threw exception: java.lang.AssertionError: Expected message not found: 'warning: AES instructions are not available on this CPU'.
Case testUseAES failed
JavaTest Message: shutting down test

STATUS:Failed.`main' threw exception: java.lang.AssertionError: Expected message not found: 'warning: AES instructions are not available on this CPU'. Case testUseAES failed
```