6a85e34c4d
Make it match its definition (size_t vs unsigned long). And declare
it in a shared header to fix the -Wmissing-prototypes warning, as it
is defined in the user code and called in the kernel code.
Fixes: 5b301409e8 ("UML: add support for KASAN under x86_64")
Signed-off-by: Tiwei Bie <tiwei.btw@antgroup.com>
Signed-off-by: Richard Weinberger <richard@nod.at>
36 lines
1,019 B
C
36 lines
1,019 B
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef __ASM_UM_KASAN_H
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#define __ASM_UM_KASAN_H
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#include <linux/init.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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/* used in kasan_mem_to_shadow to divide by 8 */
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#define KASAN_SHADOW_SCALE_SHIFT 3
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#ifdef CONFIG_X86_64
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#define KASAN_HOST_USER_SPACE_END_ADDR 0x00007fffffffffffUL
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/* KASAN_SHADOW_SIZE is the size of total address space divided by 8 */
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#define KASAN_SHADOW_SIZE ((KASAN_HOST_USER_SPACE_END_ADDR + 1) >> \
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KASAN_SHADOW_SCALE_SHIFT)
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#else
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#error "KASAN_SHADOW_SIZE is not defined for this sub-architecture"
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#endif /* CONFIG_X86_64 */
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#define KASAN_SHADOW_START (KASAN_SHADOW_OFFSET)
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#define KASAN_SHADOW_END (KASAN_SHADOW_START + KASAN_SHADOW_SIZE)
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#ifdef CONFIG_KASAN
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void kasan_init(void);
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extern int kasan_um_is_ready;
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#ifdef CONFIG_STATIC_LINK
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#define kasan_arch_is_ready() (kasan_um_is_ready)
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#endif
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#else
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static inline void kasan_init(void) { }
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#endif /* CONFIG_KASAN */
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#endif /* __ASM_UM_KASAN_H */
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