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4c7c44837b
The first part of memory map (up to %esp fixup) simply scales existing map for 4-level paging by factor of 9 -- number of bits addressed by the additional page table level. The rest of the map is unchanged. Signed-off-by: Kirill A. Shutemov <kirill.shutemov@linux.intel.com> Cc: Andrew Morton <akpm@linux-foundation.org> Cc: Andy Lutomirski <luto@amacapital.net> Cc: Andy Lutomirski <luto@kernel.org> Cc: Borislav Petkov <bp@alien8.de> Cc: Brian Gerst <brgerst@gmail.com> Cc: Dave Hansen <dave.hansen@intel.com> Cc: Denys Vlasenko <dvlasenk@redhat.com> Cc: H. Peter Anvin <hpa@zytor.com> Cc: Josh Poimboeuf <jpoimboe@redhat.com> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: linux-arch@vger.kernel.org Cc: linux-mm@kvack.org Link: http://lkml.kernel.org/r/20170330080731.65421-4-kirill.shutemov@linux.intel.com Signed-off-by: Ingo Molnar <mingo@kernel.org>
34 lines
927 B
C
34 lines
927 B
C
#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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/*
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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) >> 3))
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/*
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* 47 bits for kernel address -> (47 - 3) bits for shadow
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* 56 bits for kernel address -> (56 - 3) bits for shadow
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*/
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#define KASAN_SHADOW_END (KASAN_SHADOW_START + (1ULL << (__VIRTUAL_MASK_SHIFT - 3)))
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#ifndef __ASSEMBLY__
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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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#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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#endif
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#endif
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#endif
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