mirror of https://gitee.com/openkylin/linux.git
49 lines
1.0 KiB
C
49 lines
1.0 KiB
C
#ifndef _ASM_X86_MMU_H
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#define _ASM_X86_MMU_H
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#include <linux/spinlock.h>
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#include <linux/mutex.h>
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/*
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* The x86 doesn't have a mmu context, but
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* we put the segment information here.
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*/
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typedef struct {
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#ifdef CONFIG_MODIFY_LDT_SYSCALL
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struct ldt_struct *ldt;
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#endif
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#ifdef CONFIG_X86_64
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/* True if mm supports a task running in 32 bit compatibility mode. */
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unsigned short ia32_compat;
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#endif
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struct mutex lock;
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void __user *vdso; /* vdso base address */
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const struct vdso_image *vdso_image; /* vdso image in use */
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atomic_t perf_rdpmc_allowed; /* nonzero if rdpmc is allowed */
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#ifdef CONFIG_X86_INTEL_MEMORY_PROTECTION_KEYS
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/*
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* One bit per protection key says whether userspace can
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* use it or not. protected by mmap_sem.
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*/
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u16 pkey_allocation_map;
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s16 execute_only_pkey;
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#endif
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#ifdef CONFIG_X86_INTEL_MPX
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/* address of the bounds directory */
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void __user *bd_addr;
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#endif
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} mm_context_t;
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#ifdef CONFIG_SMP
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void leave_mm(int cpu);
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#else
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static inline void leave_mm(int cpu)
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{
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}
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#endif
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#endif /* _ASM_X86_MMU_H */
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