diff options
Diffstat (limited to 'kernel/arch/x86/include/asm/mmu.h')
| -rw-r--r-- | kernel/arch/x86/include/asm/mmu.h | 34 |
1 files changed, 34 insertions, 0 deletions
diff --git a/kernel/arch/x86/include/asm/mmu.h b/kernel/arch/x86/include/asm/mmu.h new file mode 100644 index 000000000..09b9620a7 --- /dev/null +++ b/kernel/arch/x86/include/asm/mmu.h @@ -0,0 +1,34 @@ +#ifndef _ASM_X86_MMU_H +#define _ASM_X86_MMU_H + +#include <linux/spinlock.h> +#include <linux/mutex.h> + +/* + * The x86 doesn't have a mmu context, but + * we put the segment information here. + */ +typedef struct { + void *ldt; + int size; + +#ifdef CONFIG_X86_64 + /* True if mm supports a task running in 32 bit compatibility mode. */ + unsigned short ia32_compat; +#endif + + struct mutex lock; + void __user *vdso; + + atomic_t perf_rdpmc_allowed; /* nonzero if rdpmc is allowed */ +} mm_context_t; + +#ifdef CONFIG_SMP +void leave_mm(int cpu); +#else +static inline void leave_mm(int cpu) +{ +} +#endif + +#endif /* _ASM_X86_MMU_H */ |