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30c400886b
Modules are now located before kernel, KASAN area has to be extended accordingly. Fixes:80edc68e04("powerpc/32s: Define a MODULE area below kernel text all the time") Fixes:9132a2e82a("powerpc/8xx: Define a MODULE area below kernel text") Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu> Signed-off-by: Michael Ellerman <mpe@ellerman.id.au> Link: https://lore.kernel.org/r/c68163065163f303f5af1e4bbdd9f1ce69f0543e.1619260465.git.christophe.leroy@csgroup.eu
52 lines
1.4 KiB
C
52 lines
1.4 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_KASAN_H
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#define __ASM_KASAN_H
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#ifdef CONFIG_KASAN
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#define _GLOBAL_KASAN(fn) _GLOBAL(__##fn)
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#define _GLOBAL_TOC_KASAN(fn) _GLOBAL_TOC(__##fn)
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#define EXPORT_SYMBOL_KASAN(fn) EXPORT_SYMBOL(__##fn)
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#else
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#define _GLOBAL_KASAN(fn) _GLOBAL(fn)
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#define _GLOBAL_TOC_KASAN(fn) _GLOBAL_TOC(fn)
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#define EXPORT_SYMBOL_KASAN(fn)
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#endif
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#ifndef __ASSEMBLY__
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#include <asm/page.h>
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#include <linux/sizes.h>
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#define KASAN_SHADOW_SCALE_SHIFT 3
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#ifdef CONFIG_MODULES
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#define KASAN_KERN_START ALIGN_DOWN(PAGE_OFFSET - SZ_256M, SZ_256M)
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#else
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#define KASAN_KERN_START PAGE_OFFSET
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#endif
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#define KASAN_SHADOW_START (KASAN_SHADOW_OFFSET + \
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(KASAN_KERN_START >> KASAN_SHADOW_SCALE_SHIFT))
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#define KASAN_SHADOW_OFFSET ASM_CONST(CONFIG_KASAN_SHADOW_OFFSET)
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#define KASAN_SHADOW_END (-(-KASAN_SHADOW_START >> KASAN_SHADOW_SCALE_SHIFT))
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#ifdef CONFIG_KASAN
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void kasan_early_init(void);
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void kasan_mmu_init(void);
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void kasan_init(void);
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void kasan_late_init(void);
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#else
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static inline void kasan_init(void) { }
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static inline void kasan_mmu_init(void) { }
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static inline void kasan_late_init(void) { }
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#endif
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void kasan_update_early_region(unsigned long k_start, unsigned long k_end, pte_t pte);
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int kasan_init_shadow_page_tables(unsigned long k_start, unsigned long k_end);
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int kasan_init_region(void *start, size_t size);
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#endif /* __ASSEMBLY */
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#endif
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