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This patch restricts 'Region_map::attach_executable' to create read-only mappings, while offering the option to map the full rights using a new 'attach_rwx' method. The 'attach_rwx' method is now used by the dynamic linker to explicitly attach the linker area with full rwx rights. With the old page-fault handling code, the execute flag was evaluated only for leaf dataspaces, not for managed dataspaces while traversing region-map hierarchies. With the new page-fault handling code, the execute bit is downgraded to no-execute when passing a managed dataspace that is not attached as executable. Issue #4920 |
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timer |