Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
42 lines
1.3 KiB
C
42 lines
1.3 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_KASAN_H
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#define _ASM_X86_KASAN_H
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#include <linux/const.h>
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#define KASAN_SHADOW_OFFSET _AC(CONFIG_KASAN_SHADOW_OFFSET, UL)
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#define KASAN_SHADOW_SCALE_SHIFT 3
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/*
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* Compiler uses shadow offset assuming that addresses start
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* from 0. Kernel addresses don't start from 0, so shadow
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* for kernel really starts from compiler's shadow offset +
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* 'kernel address space start' >> KASAN_SHADOW_SCALE_SHIFT
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*/
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#define KASAN_SHADOW_START (KASAN_SHADOW_OFFSET + \
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((-1UL << __VIRTUAL_MASK_SHIFT) >> \
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KASAN_SHADOW_SCALE_SHIFT))
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/*
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* 47 bits for kernel address -> (47 - KASAN_SHADOW_SCALE_SHIFT) bits for shadow
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* 56 bits for kernel address -> (56 - KASAN_SHADOW_SCALE_SHIFT) bits for shadow
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*/
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#define KASAN_SHADOW_END (KASAN_SHADOW_START + \
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(1ULL << (__VIRTUAL_MASK_SHIFT - \
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KASAN_SHADOW_SCALE_SHIFT)))
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#ifndef __ASSEMBLER__
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#ifdef CONFIG_KASAN
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void __init kasan_early_init(void);
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void __init kasan_init(void);
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void __init kasan_populate_shadow_for_vaddr(void *va, size_t size, int nid);
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#else
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static inline void kasan_early_init(void) { }
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static inline void kasan_init(void) { }
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static inline void kasan_populate_shadow_for_vaddr(void *va, size_t size,
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int nid) { }
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#endif
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#endif
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#endif
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