18c2ecf20Sopenharmony_ci/* SPDX-License-Identifier: GPL-2.0 */ 28c2ecf20Sopenharmony_ci#ifndef _ASM_X86_PAGE_64_H 38c2ecf20Sopenharmony_ci#define _ASM_X86_PAGE_64_H 48c2ecf20Sopenharmony_ci 58c2ecf20Sopenharmony_ci#include <asm/page_64_types.h> 68c2ecf20Sopenharmony_ci 78c2ecf20Sopenharmony_ci#ifndef __ASSEMBLY__ 88c2ecf20Sopenharmony_ci#include <asm/alternative.h> 98c2ecf20Sopenharmony_ci 108c2ecf20Sopenharmony_ci/* duplicated to the one in bootmem.h */ 118c2ecf20Sopenharmony_ciextern unsigned long max_pfn; 128c2ecf20Sopenharmony_ciextern unsigned long phys_base; 138c2ecf20Sopenharmony_ci 148c2ecf20Sopenharmony_ciextern unsigned long page_offset_base; 158c2ecf20Sopenharmony_ciextern unsigned long vmalloc_base; 168c2ecf20Sopenharmony_ciextern unsigned long vmemmap_base; 178c2ecf20Sopenharmony_ci 188c2ecf20Sopenharmony_cistatic inline unsigned long __phys_addr_nodebug(unsigned long x) 198c2ecf20Sopenharmony_ci{ 208c2ecf20Sopenharmony_ci unsigned long y = x - __START_KERNEL_map; 218c2ecf20Sopenharmony_ci 228c2ecf20Sopenharmony_ci /* use the carry flag to determine if x was < __START_KERNEL_map */ 238c2ecf20Sopenharmony_ci x = y + ((x > y) ? phys_base : (__START_KERNEL_map - PAGE_OFFSET)); 248c2ecf20Sopenharmony_ci 258c2ecf20Sopenharmony_ci return x; 268c2ecf20Sopenharmony_ci} 278c2ecf20Sopenharmony_ci 288c2ecf20Sopenharmony_ci#ifdef CONFIG_DEBUG_VIRTUAL 298c2ecf20Sopenharmony_ciextern unsigned long __phys_addr(unsigned long); 308c2ecf20Sopenharmony_ciextern unsigned long __phys_addr_symbol(unsigned long); 318c2ecf20Sopenharmony_ci#else 328c2ecf20Sopenharmony_ci#define __phys_addr(x) __phys_addr_nodebug(x) 338c2ecf20Sopenharmony_ci#define __phys_addr_symbol(x) \ 348c2ecf20Sopenharmony_ci ((unsigned long)(x) - __START_KERNEL_map + phys_base) 358c2ecf20Sopenharmony_ci#endif 368c2ecf20Sopenharmony_ci 378c2ecf20Sopenharmony_ci#define __phys_reloc_hide(x) (x) 388c2ecf20Sopenharmony_ci 398c2ecf20Sopenharmony_ci#ifdef CONFIG_FLATMEM 408c2ecf20Sopenharmony_ci#define pfn_valid(pfn) ((pfn) < max_pfn) 418c2ecf20Sopenharmony_ci#endif 428c2ecf20Sopenharmony_ci 438c2ecf20Sopenharmony_civoid clear_page_orig(void *page); 448c2ecf20Sopenharmony_civoid clear_page_rep(void *page); 458c2ecf20Sopenharmony_civoid clear_page_erms(void *page); 468c2ecf20Sopenharmony_ci 478c2ecf20Sopenharmony_cistatic inline void clear_page(void *page) 488c2ecf20Sopenharmony_ci{ 498c2ecf20Sopenharmony_ci alternative_call_2(clear_page_orig, 508c2ecf20Sopenharmony_ci clear_page_rep, X86_FEATURE_REP_GOOD, 518c2ecf20Sopenharmony_ci clear_page_erms, X86_FEATURE_ERMS, 528c2ecf20Sopenharmony_ci "=D" (page), 538c2ecf20Sopenharmony_ci "0" (page) 548c2ecf20Sopenharmony_ci : "cc", "memory", "rax", "rcx"); 558c2ecf20Sopenharmony_ci} 568c2ecf20Sopenharmony_ci 578c2ecf20Sopenharmony_civoid copy_page(void *to, void *from); 588c2ecf20Sopenharmony_ci 598c2ecf20Sopenharmony_ci#endif /* !__ASSEMBLY__ */ 608c2ecf20Sopenharmony_ci 618c2ecf20Sopenharmony_ci#ifdef CONFIG_X86_VSYSCALL_EMULATION 628c2ecf20Sopenharmony_ci# define __HAVE_ARCH_GATE_AREA 1 638c2ecf20Sopenharmony_ci#endif 648c2ecf20Sopenharmony_ci 658c2ecf20Sopenharmony_ci#endif /* _ASM_X86_PAGE_64_H */ 66