cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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swsusp.c (650B)

      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}