x86: remove set_kernel_exec()
The SMP trampoline always runs in real mode, so making it executable in the page tables doesn't make much sense because it executes before page tables are set up. That was the only user of set_kernel_exec(). Remove set_kernel_exec(). Signed-off-by: NAndi Kleen <ak@suse.de> Acked-by: NJan Beulich <jbeulich@novell.com> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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