diff options
Diffstat (limited to 'arch/x86/include/asm/mmu_context_32.h')
-rw-r--r-- | arch/x86/include/asm/mmu_context_32.h | 55 |
1 files changed, 0 insertions, 55 deletions
diff --git a/arch/x86/include/asm/mmu_context_32.h b/arch/x86/include/asm/mmu_context_32.h deleted file mode 100644 index 7e98ce1d2c0..00000000000 --- a/arch/x86/include/asm/mmu_context_32.h +++ /dev/null | |||
@@ -1,55 +0,0 @@ | |||
1 | #ifndef _ASM_X86_MMU_CONTEXT_32_H | ||
2 | #define _ASM_X86_MMU_CONTEXT_32_H | ||
3 | |||
4 | static inline void enter_lazy_tlb(struct mm_struct *mm, struct task_struct *tsk) | ||
5 | { | ||
6 | #ifdef CONFIG_SMP | ||
7 | if (x86_read_percpu(cpu_tlbstate.state) == TLBSTATE_OK) | ||
8 | x86_write_percpu(cpu_tlbstate.state, TLBSTATE_LAZY); | ||
9 | #endif | ||
10 | } | ||
11 | |||
12 | static inline void switch_mm(struct mm_struct *prev, | ||
13 | struct mm_struct *next, | ||
14 | struct task_struct *tsk) | ||
15 | { | ||
16 | int cpu = smp_processor_id(); | ||
17 | |||
18 | if (likely(prev != next)) { | ||
19 | /* stop flush ipis for the previous mm */ | ||
20 | cpu_clear(cpu, prev->cpu_vm_mask); | ||
21 | #ifdef CONFIG_SMP | ||
22 | x86_write_percpu(cpu_tlbstate.state, TLBSTATE_OK); | ||
23 | x86_write_percpu(cpu_tlbstate.active_mm, next); | ||
24 | #endif | ||
25 | cpu_set(cpu, next->cpu_vm_mask); | ||
26 | |||
27 | /* Re-load page tables */ | ||
28 | load_cr3(next->pgd); | ||
29 | |||
30 | /* | ||
31 | * load the LDT, if the LDT is different: | ||
32 | */ | ||
33 | if (unlikely(prev->context.ldt != next->context.ldt)) | ||
34 | load_LDT_nolock(&next->context); | ||
35 | } | ||
36 | #ifdef CONFIG_SMP | ||
37 | else { | ||
38 | x86_write_percpu(cpu_tlbstate.state, TLBSTATE_OK); | ||
39 | BUG_ON(x86_read_percpu(cpu_tlbstate.active_mm) != next); | ||
40 | |||
41 | if (!cpu_test_and_set(cpu, next->cpu_vm_mask)) { | ||
42 | /* We were in lazy tlb mode and leave_mm disabled | ||
43 | * tlb flush IPI delivery. We must reload %cr3. | ||
44 | */ | ||
45 | load_cr3(next->pgd); | ||
46 | load_LDT_nolock(&next->context); | ||
47 | } | ||
48 | } | ||
49 | #endif | ||
50 | } | ||
51 | |||
52 | #define deactivate_mm(tsk, mm) \ | ||
53 | asm("movl %0,%%gs": :"r" (0)); | ||
54 | |||
55 | #endif /* _ASM_X86_MMU_CONTEXT_32_H */ | ||