21 lines
712 B
C
21 lines
712 B
C
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// SPDX-License-Identifier: GPL-2.0
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/*
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* x86-specific bits of KMSAN shadow implementation.
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*
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* Copyright (C) 2022 Google LLC
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* Author: Alexander Potapenko <glider@google.com>
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*/
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#include <asm/cpu_entry_area.h>
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#include <linux/percpu-defs.h>
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/*
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* Addresses within the CPU entry area (including e.g. exception stacks) do not
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* have struct page entries corresponding to them, so they need separate
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* handling.
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* arch_kmsan_get_meta_or_null() (declared in the header) maps the addresses in
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* CPU entry area to addresses in cpu_entry_area_shadow/cpu_entry_area_origin.
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*/
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DEFINE_PER_CPU(char[CPU_ENTRY_AREA_SIZE], cpu_entry_area_shadow);
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DEFINE_PER_CPU(char[CPU_ENTRY_AREA_SIZE], cpu_entry_area_origin);
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