1*767a67b0SThomas Gleixner // SPDX-License-Identifier: GPL-2.0-only 249c3df6aSVivek Goyal /* 349c3df6aSVivek Goyal * Suspend support specific for power. 449c3df6aSVivek Goyal * 5a2531293SPavel Machek * Copyright (c) 2002 Pavel Machek <pavel@ucw.cz> 649c3df6aSVivek Goyal * Copyright (c) 2001 Patrick Mochel <mochel@osdl.org> 749c3df6aSVivek Goyal */ 849c3df6aSVivek Goyal 927ac792cSAndrea Righi #include <linux/mm.h> 1049c3df6aSVivek Goyal #include <asm/page.h> 117f8998c7SGeert Uytterhoeven #include <asm/sections.h> 1249c3df6aSVivek Goyal 1349c3df6aSVivek Goyal /* 1449c3df6aSVivek Goyal * pfn_is_nosave - check if given pfn is in the 'nosave' section 1549c3df6aSVivek Goyal */ 1649c3df6aSVivek Goyal 1749c3df6aSVivek Goyal int pfn_is_nosave(unsigned long pfn) 1849c3df6aSVivek Goyal { 1949c3df6aSVivek Goyal unsigned long nosave_begin_pfn = __pa(&__nosave_begin) >> PAGE_SHIFT; 2049c3df6aSVivek Goyal unsigned long nosave_end_pfn = PAGE_ALIGN(__pa(&__nosave_end)) >> PAGE_SHIFT; 2149c3df6aSVivek Goyal return (pfn >= nosave_begin_pfn) && (pfn < nosave_end_pfn); 2249c3df6aSVivek Goyal } 23