mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-13 08:46:45 +07:00
100 lines
2.3 KiB
C
100 lines
2.3 KiB
C
#ifndef _ASM_IA64_TLBFLUSH_H
|
|
#define _ASM_IA64_TLBFLUSH_H
|
|
|
|
/*
|
|
* Copyright (C) 2002 Hewlett-Packard Co
|
|
* David Mosberger-Tang <davidm@hpl.hp.com>
|
|
*/
|
|
|
|
|
|
#include <linux/mm.h>
|
|
|
|
#include <asm/intrinsics.h>
|
|
#include <asm/mmu_context.h>
|
|
#include <asm/page.h>
|
|
|
|
/*
|
|
* Now for some TLB flushing routines. This is the kind of stuff that
|
|
* can be very expensive, so try to avoid them whenever possible.
|
|
*/
|
|
|
|
/*
|
|
* Flush everything (kernel mapping may also have changed due to
|
|
* vmalloc/vfree).
|
|
*/
|
|
extern void local_flush_tlb_all (void);
|
|
|
|
#ifdef CONFIG_SMP
|
|
extern void smp_flush_tlb_all (void);
|
|
extern void smp_flush_tlb_mm (struct mm_struct *mm);
|
|
# define flush_tlb_all() smp_flush_tlb_all()
|
|
#else
|
|
# define flush_tlb_all() local_flush_tlb_all()
|
|
#endif
|
|
|
|
static inline void
|
|
local_finish_flush_tlb_mm (struct mm_struct *mm)
|
|
{
|
|
if (mm == current->active_mm)
|
|
activate_context(mm);
|
|
}
|
|
|
|
/*
|
|
* Flush a specified user mapping. This is called, e.g., as a result of fork() and
|
|
* exit(). fork() ends up here because the copy-on-write mechanism needs to write-protect
|
|
* the PTEs of the parent task.
|
|
*/
|
|
static inline void
|
|
flush_tlb_mm (struct mm_struct *mm)
|
|
{
|
|
if (!mm)
|
|
return;
|
|
|
|
set_bit(mm->context, ia64_ctx.flushmap);
|
|
mm->context = 0;
|
|
|
|
if (atomic_read(&mm->mm_users) == 0)
|
|
return; /* happens as a result of exit_mmap() */
|
|
|
|
#ifdef CONFIG_SMP
|
|
smp_flush_tlb_mm(mm);
|
|
#else
|
|
local_finish_flush_tlb_mm(mm);
|
|
#endif
|
|
}
|
|
|
|
extern void flush_tlb_range (struct vm_area_struct *vma, unsigned long start, unsigned long end);
|
|
|
|
/*
|
|
* Page-granular tlb flush.
|
|
*/
|
|
static inline void
|
|
flush_tlb_page (struct vm_area_struct *vma, unsigned long addr)
|
|
{
|
|
#ifdef CONFIG_SMP
|
|
flush_tlb_range(vma, (addr & PAGE_MASK), (addr & PAGE_MASK) + PAGE_SIZE);
|
|
#else
|
|
if (vma->vm_mm == current->active_mm)
|
|
ia64_ptcl(addr, (PAGE_SHIFT << 2));
|
|
else
|
|
vma->vm_mm->context = 0;
|
|
#endif
|
|
}
|
|
|
|
/*
|
|
* Flush the TLB entries mapping the virtually mapped linear page
|
|
* table corresponding to address range [START-END).
|
|
*/
|
|
static inline void
|
|
flush_tlb_pgtables (struct mm_struct *mm, unsigned long start, unsigned long end)
|
|
{
|
|
/*
|
|
* Deprecated. The virtual page table is now flushed via the normal gather/flush
|
|
* interface (see tlb.h).
|
|
*/
|
|
}
|
|
|
|
#define flush_tlb_kernel_range(start, end) flush_tlb_all() /* XXX fix me */
|
|
|
|
#endif /* _ASM_IA64_TLBFLUSH_H */
|