aboutsummaryrefslogtreecommitdiff
path: root/include/asm-x86/tlbflush.h
diff options
context:
space:
mode:
Diffstat (limited to 'include/asm-x86/tlbflush.h')
-rw-r--r--include/asm-x86/tlbflush.h178
1 files changed, 0 insertions, 178 deletions
diff --git a/include/asm-x86/tlbflush.h b/include/asm-x86/tlbflush.h
deleted file mode 100644
index 3cdd08b5bdb..00000000000
--- a/include/asm-x86/tlbflush.h
+++ /dev/null
@@ -1,178 +0,0 @@
-#ifndef ASM_X86__TLBFLUSH_H
-#define ASM_X86__TLBFLUSH_H
-
-#include <linux/mm.h>
-#include <linux/sched.h>
-
-#include <asm/processor.h>
-#include <asm/system.h>
-
-#ifdef CONFIG_PARAVIRT
-#include <asm/paravirt.h>
-#else
-#define __flush_tlb() __native_flush_tlb()
-#define __flush_tlb_global() __native_flush_tlb_global()
-#define __flush_tlb_single(addr) __native_flush_tlb_single(addr)
-#endif
-
-static inline void __native_flush_tlb(void)
-{
- write_cr3(read_cr3());
-}
-
-static inline void __native_flush_tlb_global(void)
-{
- unsigned long flags;
- unsigned long cr4;
-
- /*
- * Read-modify-write to CR4 - protect it from preemption and
- * from interrupts. (Use the raw variant because this code can
- * be called from deep inside debugging code.)
- */
- raw_local_irq_save(flags);
-
- cr4 = read_cr4();
- /* clear PGE */
- write_cr4(cr4 & ~X86_CR4_PGE);
- /* write old PGE again and flush TLBs */
- write_cr4(cr4);
-
- raw_local_irq_restore(flags);
-}
-
-static inline void __native_flush_tlb_single(unsigned long addr)
-{
- asm volatile("invlpg (%0)" ::"r" (addr) : "memory");
-}
-
-static inline void __flush_tlb_all(void)
-{
- if (cpu_has_pge)
- __flush_tlb_global();
- else
- __flush_tlb();
-}
-
-static inline void __flush_tlb_one(unsigned long addr)
-{
- if (cpu_has_invlpg)
- __flush_tlb_single(addr);
- else
- __flush_tlb();
-}
-
-#ifdef CONFIG_X86_32
-# define TLB_FLUSH_ALL 0xffffffff
-#else
-# define TLB_FLUSH_ALL -1ULL
-#endif
-
-/*
- * TLB flushing:
- *
- * - flush_tlb() flushes the current mm struct TLBs
- * - flush_tlb_all() flushes all processes TLBs
- * - flush_tlb_mm(mm) flushes the specified mm context TLB's
- * - flush_tlb_page(vma, vmaddr) flushes one page
- * - flush_tlb_range(vma, start, end) flushes a range of pages
- * - flush_tlb_kernel_range(start, end) flushes a range of kernel pages
- * - flush_tlb_others(cpumask, mm, va) flushes TLBs on other cpus
- *
- * ..but the i386 has somewhat limited tlb flushing capabilities,
- * and page-granular flushes are available only on i486 and up.
- *
- * x86-64 can only flush individual pages or full VMs. For a range flush
- * we always do the full VM. Might be worth trying if for a small
- * range a few INVLPGs in a row are a win.
- */
-
-#ifndef CONFIG_SMP
-
-#define flush_tlb() __flush_tlb()
-#define flush_tlb_all() __flush_tlb_all()
-#define local_flush_tlb() __flush_tlb()
-
-static inline void flush_tlb_mm(struct mm_struct *mm)
-{
- if (mm == current->active_mm)
- __flush_tlb();
-}
-
-static inline void flush_tlb_page(struct vm_area_struct *vma,
- unsigned long addr)
-{
- if (vma->vm_mm == current->active_mm)
- __flush_tlb_one(addr);
-}
-
-static inline void flush_tlb_range(struct vm_area_struct *vma,
- unsigned long start, unsigned long end)
-{
- if (vma->vm_mm == current->active_mm)
- __flush_tlb();
-}
-
-static inline void native_flush_tlb_others(const cpumask_t *cpumask,
- struct mm_struct *mm,
- unsigned long va)
-{
-}
-
-static inline void reset_lazy_tlbstate(void)
-{
-}
-
-#else /* SMP */
-
-#include <asm/smp.h>
-
-#define local_flush_tlb() __flush_tlb()
-
-extern void flush_tlb_all(void);
-extern void flush_tlb_current_task(void);
-extern void flush_tlb_mm(struct mm_struct *);
-extern void flush_tlb_page(struct vm_area_struct *, unsigned long);
-
-#define flush_tlb() flush_tlb_current_task()
-
-static inline void flush_tlb_range(struct vm_area_struct *vma,
- unsigned long start, unsigned long end)
-{
- flush_tlb_mm(vma->vm_mm);
-}
-
-void native_flush_tlb_others(const cpumask_t *cpumask, struct mm_struct *mm,
- unsigned long va);
-
-#define TLBSTATE_OK 1
-#define TLBSTATE_LAZY 2
-
-#ifdef CONFIG_X86_32
-struct tlb_state {
- struct mm_struct *active_mm;
- int state;
- char __cacheline_padding[L1_CACHE_BYTES-8];
-};
-DECLARE_PER_CPU(struct tlb_state, cpu_tlbstate);
-
-void reset_lazy_tlbstate(void);
-#else
-static inline void reset_lazy_tlbstate(void)
-{
-}
-#endif
-
-#endif /* SMP */
-
-#ifndef CONFIG_PARAVIRT
-#define flush_tlb_others(mask, mm, va) native_flush_tlb_others(&mask, mm, va)
-#endif
-
-static inline void flush_tlb_kernel_range(unsigned long start,
- unsigned long end)
-{
- flush_tlb_all();
-}
-
-#endif /* ASM_X86__TLBFLUSH_H */