x86: do_page_fault small unification
Copy the prefetch of map_sem from X86_64 and move the check notify_page_fault (soon to be kprobe_handle_fault) out of the unlikely if() statement. This makes the X86_32|64 pagefault handlers closer to each other. Signed-off-by: NHarvey Harrison <harvey.harrison@gmail.com> Signed-off-by: NIngo Molnar <mingo@elte.hu> Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
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