1fe306e4a4
This reverts commit 52fb2d451e as CFI is
being removed from the tree to come back later as a "clean" set of
patches.
Bug: 145210207
Cc: Sami Tolvanen <samitolvanen@google.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@google.com>
Change-Id: I6c8f64c167fb5544063688708a633d7f4a758559
38 lines
895 B
C
38 lines
895 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_SECTIONS_H
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#define _ASM_X86_SECTIONS_H
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#define arch_is_kernel_initmem_freed arch_is_kernel_initmem_freed
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#include <asm-generic/sections.h>
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#include <asm/extable.h>
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extern char __brk_base[], __brk_limit[];
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extern char __end_rodata_aligned[];
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#if defined(CONFIG_X86_64)
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extern char __end_rodata_hpage_align[];
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#endif
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extern char __end_of_kernel_reserve[];
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extern unsigned long _brk_start, _brk_end;
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static inline bool arch_is_kernel_initmem_freed(unsigned long addr)
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{
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/*
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* If _brk_start has not been cleared, brk allocation is incomplete,
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* and we can not make assumptions about its use.
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*/
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if (_brk_start)
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return 0;
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/*
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* After brk allocation is complete, space between _brk_end and _end
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* is available for allocation.
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*/
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return addr >= _brk_end && addr < (unsigned long)&_end;
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}
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#endif /* _ASM_X86_SECTIONS_H */
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