entry: Add exit_to_user_mode() wrapper

}

#endif

/**

 * exit_to_user_mode - Fixup state when exiting to user mode

 *

 * Syscall/interrupt exit enables interrupts, but the kernel state is

 * interrupts disabled when this is invoked. Also tell RCU about it.

 *

 * 1) Trace interrupts on state

 * 2) Invoke context tracking if enabled to adjust RCU state

 * 3) Invoke architecture specific last minute exit code, e.g. speculation

 *    mitigations, etc.: arch_exit_to_user_mode()

 * 4) Tell lockdep that interrupts are enabled

 *

 * Invoked from architecture specific code when syscall_exit_to_user_mode()

 * is not suitable as the last step before returning to userspace. Must be

 * invoked with interrupts disabled and the caller must be

 * non-instrumentable.

 */

void exit_to_user_mode(void);

/**

 * syscall_exit_to_user_mode - Handle work before returning to user mode

 * @regs:	Pointer to currents pt_regs

 *	- Architecture specific one time work arch_exit_to_user_mode_prepare()

 *	- Address limit and lockdep checks

 *

 *  3) Final transition (lockdep, tracing, context tracking, RCU). Invokes

 *     arch_exit_to_user_mode() to handle e.g. speculation mitigations

 *  3) Final transition (lockdep, tracing, context tracking, RCU), i.e. the

 *     functionality in exit_to_user_mode().

 */

void syscall_exit_to_user_mode(struct pt_regs *regs);

	instrumentation_end();

}

/**

 * __exit_to_user_mode - Fixup state when exiting to user mode

 *

 * Syscall/interupt exit enables interrupts, but the kernel state is

 * interrupts disabled when this is invoked. Also tell RCU about it.

 *

 * 1) Trace interrupts on state

 * 2) Invoke context tracking if enabled to adjust RCU state

 * 3) Invoke architecture specific last minute exit code, e.g. speculation

 *    mitigations, etc.

 * 4) Tell lockdep that interrupts are enabled

 */

/* See comment for exit_to_user_mode() in entry-common.h */

static __always_inline void __exit_to_user_mode(void)

{

	instrumentation_begin();

	lockdep_hardirqs_on(CALLER_ADDR0);

}

void noinstr exit_to_user_mode(void)

{

	__exit_to_user_mode();

}

/* Workaround to allow gradual conversion of architecture code */

void __weak arch_do_signal_or_restart(struct pt_regs *regs, bool has_signal) { }