mirror of
https://git.kernel.org/pub/scm/linux/kernel/git/chenhuacai/linux-loongson
synced 2025-10-27 17:58:22 +00:00
b40827fa72
This patch adds an initial page table with low mappings used exclusively for booting APs/resuming after ACPI suspend/machine restart. After this, there's no need to add low mappings to swapper_pg_dir and zap them later or create own swsusp PGD page solely for ACPI sleep needs - we have initial_page_table for that. Signed-off-by: Borislav Petkov <bp@alien8.de> LKML-Reference: <20101020070526.GA9588@liondog.tnic> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
29 lines
727 B
C
29 lines
727 B
C
#ifndef _ASM_X86_TRAMPOLINE_H
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#define _ASM_X86_TRAMPOLINE_H
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#ifndef __ASSEMBLY__
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#ifdef CONFIG_X86_TRAMPOLINE
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/*
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* Trampoline 80x86 program as an array.
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*/
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extern const unsigned char trampoline_data [];
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extern const unsigned char trampoline_end [];
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extern unsigned char *trampoline_base;
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extern unsigned long init_rsp;
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extern unsigned long initial_code;
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extern unsigned long initial_gs;
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#define TRAMPOLINE_SIZE roundup(trampoline_end - trampoline_data, PAGE_SIZE)
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extern unsigned long setup_trampoline(void);
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extern void __init reserve_trampoline_memory(void);
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#else
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static inline void reserve_trampoline_memory(void) {}
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#endif /* CONFIG_X86_TRAMPOLINE */
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#endif /* __ASSEMBLY__ */
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#endif /* _ASM_X86_TRAMPOLINE_H */
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