hg: hsx/hotspot-rt/hotspot: 8023956: Provide a work-around to broken Linux 32 bit "Exec Shield" using CS for NX emulation (crashing with SI_KERNEL)

[mikael.gerdin at oracle.com]

Changeset: 899ecf76b570
Author:    dsimms
Date:      2013-09-25 13:58 +0200
URL:       http://hg.openjdk.java.net/hsx/hotspot-rt/hotspot/rev/899ecf76b570

8023956: Provide a work-around to broken Linux 32 bit "Exec Shield" using CS for NX emulation (crashing with SI_KERNEL)
Summary: Execute some code at a high virtual address value, and keep mapped
Reviewed-by: coleenp, zgu

! src/os/linux/vm/os_linux.cpp
! src/os_cpu/linux_x86/vm/os_linux_x86.cpp
! src/os_cpu/linux_x86/vm/os_linux_x86.hpp