--- old/src/hotspot/.mx.jvmci/mx_jvmci.py	2017-10-27 22:55:38.000000000 +0200
+++ new/src/hotspot/.mx.jvmci/mx_jvmci.py	2017-10-27 22:55:38.000000000 +0200
@@ -45,7 +45,7 @@
 """
 Top level directory of the JDK source workspace.
 """
-_jdkSourceRoot = dirname(_suite.dir)
+_jdkSourceRoot = dirname(dirname(_suite.dir))
 
 _JVMCI_JDK_TAG = 'jvmci'
 
@@ -155,11 +155,11 @@
 
     jdkBuildDir = _get_jdk_build_dir()
     if not exists(jdkBuildDir):
-        # JDK9 must be bootstrapped with a JDK8
-        compliance = mx.JavaCompliance('8')
-        jdk8 = mx.get_jdk(compliance.exactMatch, versionDescription=compliance.value)
+        # JDK10 must be bootstrapped with a JDK9
+        compliance = mx.JavaCompliance('9')
+        jdk9 = mx.get_jdk(compliance.exactMatch, versionDescription=compliance.value)
         cmd = ['sh', 'configure', '--with-debug-level=' + _vm.debugLevel, '--with-native-debug-symbols=external', '--disable-precompiled-headers', '--with-jvm-features=graal',
-               '--with-jvm-variants=' + _vm.jvmVariant, '--disable-warnings-as-errors', '--with-boot-jdk=' + jdk8.home, '--with-jvm-features=graal']
+               '--with-jvm-variants=' + _vm.jvmVariant, '--disable-warnings-as-errors', '--with-boot-jdk=' + jdk9.home, '--with-jvm-features=graal']
         mx.run(cmd, cwd=_jdkSourceRoot)
     cmd = [mx.gmake_cmd(), 'CONF=' + _vm.debugLevel]
     if mx.get_opts().verbose: