[PATCH RT 2/6] Revert "x86: Disable IST stacks for debug/int 3/stack fault for PREEMPT_RT"

3.2.55-rt79-rc1 stable review patch. If anyone has any objections, please let me know. -- From: Sebastian Andrzej Siewior where do I start. Let me explain what is going on here. The code sequence | pushf | pop%edx | or $0x1,%dh | push %edx | mov$0xe0,%eax | popf |

[PATCH RT 2/6] Revert "x86: Disable IST stacks for debug/int 3/stack fault for PREEMPT_RT"

3.4.82-rt101-rc1 stable review patch. If anyone has any objections, please let me know. -- From: Sebastian Andrzej Siewior where do I start. Let me explain what is going on here. The code sequence | pushf | pop%edx | or $0x1,%dh | push %edx | mov$0xe0,%eax | popf |