x86: process_64.c declare __switch_to() and sys_arch_prctl before they get used
Impact: cleanup In asm/system.h moved out __switch_to from CONFIG_X86_32 as it is common for both 32 and 64 bit. In asm/pctl.h defined sys_arch_prctl Signed-off-by: Jaswinder Singh <jaswinder@infradead.org> Signed-off-by: Ingo Molnar <mingo@elte.hu>
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2 changed files with 5 additions and 2 deletions
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@ -6,5 +6,8 @@
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#define ARCH_GET_FS 0x1003
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#define ARCH_GET_FS 0x1003
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#define ARCH_GET_GS 0x1004
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#define ARCH_GET_GS 0x1004
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#ifdef CONFIG_X86_64
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extern long sys_arch_prctl(int, unsigned long);
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#endif /* CONFIG_X86_64 */
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#endif /* _ASM_X86_PRCTL_H */
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#endif /* _ASM_X86_PRCTL_H */
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@ -17,12 +17,12 @@
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# define AT_VECTOR_SIZE_ARCH 1
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# define AT_VECTOR_SIZE_ARCH 1
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#endif
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#endif
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#ifdef CONFIG_X86_32
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struct task_struct; /* one of the stranger aspects of C forward declarations */
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struct task_struct; /* one of the stranger aspects of C forward declarations */
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struct task_struct *__switch_to(struct task_struct *prev,
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struct task_struct *__switch_to(struct task_struct *prev,
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struct task_struct *next);
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struct task_struct *next);
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#ifdef CONFIG_X86_32
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/*
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/*
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* Saving eflags is important. It switches not only IOPL between tasks,
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* Saving eflags is important. It switches not only IOPL between tasks,
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* it also protects other tasks from NT leaking through sysenter etc.
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* it also protects other tasks from NT leaking through sysenter etc.
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