[PATCH 00/12] Various fixes and x86 support

Hi,

Result of review of the base bits that were already merged, and x86 support.

• [PATCH 01/12] task_work: Fix NMI race condition
• [PATCH 02/12] unwind: Shorten lines
• [PATCH 03/12] unwind: Add required include files
• [PATCH 04/12] unwind: Simplify unwind_reset_info()
• [PATCH 05/12] unwind: Add comment to unwind_deferred_task_exit()
• [PATCH 06/12] unwind: Fix unwind_deferred_request() vs NMI
• [PATCH 07/12] unwind: Clarify calling context
• [PATCH 08/12] unwind: Simplify unwind_user_faultable()
• [PATCH 09/12] unwind: Make unwind_task_info::unwind_mask consistent
• [PATCH 10/12] unwind: Simplify unwind_user_next_fp() alignment check
• [PATCH 11/12] unwind: Implement compat fp unwind
• [PATCH 12/12] unwind_user/x86: Enable frame pointer unwinding on x86