JDK-6541756 : Reduce executable C-heap
  • Type: Enhancement
  • Component: hotspot
  • Sub-Component: runtime
  • Affected Version: 6
  • Priority: P3
  • Status: Closed
  • Resolution: Fixed
  • OS: generic
  • CPU: generic
  • Submitted: 2007-04-02
  • Updated: 2013-05-28
  • Resolved: 2009-04-02
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JDK 6 JDK 7 Other
6u18Fixed 7Fixed hs15Fixed
Related Reports
Relates :  
JDK-6843484 - os::commit_memory() failures are not handled properly on linux
Description
A customer pointed out a concern that our VM was mapping our C-heap allocation
as all read-write-execute. We do require "executable" access for our
CodeCache, but should not require it for the rest of the C-heap.
Comments
EVALUATION http://hg.openjdk.java.net/jdk7/hotspot-rt/hotspot/rev/6bdd6923ba16
26-03-2009
EVALUATION Fix in progress. Set execute bit on only the code cache.
23-03-2009