| /* SPDX-License-Identifier: GPL-2.0 */ |
| #ifndef _ASM_X86_SECTIONS_H |
| #define _ASM_X86_SECTIONS_H |
| |
| #define arch_is_kernel_initmem_freed arch_is_kernel_initmem_freed |
| |
| #include <asm-generic/sections.h> |
| #include <asm/extable.h> |
| |
| extern char __brk_base[], __brk_limit[]; |
| extern char __cfi_jt_start[], __cfi_jt_end[]; |
| extern char __end_rodata_aligned[]; |
| |
| #if defined(CONFIG_X86_64) |
| extern char __end_rodata_hpage_align[]; |
| #endif |
| |
| extern char __end_of_kernel_reserve[]; |
| |
| extern unsigned long _brk_start, _brk_end; |
| |
| static inline bool arch_is_kernel_initmem_freed(unsigned long addr) |
| { |
| /* |
| * If _brk_start has not been cleared, brk allocation is incomplete, |
| * and we can not make assumptions about its use. |
| */ |
| if (_brk_start) |
| return 0; |
| |
| /* |
| * After brk allocation is complete, space between _brk_end and _end |
| * is available for allocation. |
| */ |
| return addr >= _brk_end && addr < (unsigned long)&_end; |
| } |
| |
| #endif /* _ASM_X86_SECTIONS_H */ |
