1 // SPDX-License-Identifier: GPL-2.0-only 2 3 #include <linux/mm.h> 4 #include <linux/suspend.h> 5 #include <asm/coprocessor.h> 6 7 int pfn_is_nosave(unsigned long pfn) 8 { 9 unsigned long nosave_begin_pfn = PFN_DOWN(__pa(&__nosave_begin)); 10 unsigned long nosave_end_pfn = PFN_UP(__pa(&__nosave_end)); 11 12 return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn); 13 } 14 15 void notrace save_processor_state(void) 16 { 17 WARN_ON(num_online_cpus() != 1); 18 #if XTENSA_HAVE_COPROCESSORS 19 local_coprocessors_flush_release_all(); 20 #endif 21 } 22 23 void notrace restore_processor_state(void) 24 { 25 } 26