LXR linux/arch/powerpc/kernel/swsusp.c

   1// SPDX-License-Identifier: GPL-2.0-or-later
   2/*
   3 * Common powerpc suspend code for 32 and 64 bits
   4 *
   5 * Copyright 2007       Johannes Berg <johannes@sipsolutions.net>
   6 */
   7
   8#include <linux/sched.h>
   9#include <linux/suspend.h>
  10#include <asm/current.h>
  11#include <asm/mmu_context.h>
  12#include <asm/switch_to.h>
  13
  14void save_processor_state(void)
  15{
  16        /*
  17         * flush out all the special registers so we don't need
  18         * to save them in the snapshot
  19         */
  20        flush_all_to_thread(current);
  21
  22#ifdef CONFIG_PPC64
  23        hard_irq_disable();
  24#endif
  25
  26}
  27
  28void restore_processor_state(void)
  29{
  30#ifdef CONFIG_PPC32
  31        switch_mmu_context(current->active_mm, current->active_mm, NULL);
  32#endif
  33}
  34