86 lines
2.0 KiB
C
86 lines
2.0 KiB
C
|
/*
|
||
|
|
* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
|
||
|
|
* Copyright 2003 PathScale, Inc.
|
||
|
|
* Licensed under the GPL
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "linux/stddef.h"
|
||
|
|
#include "linux/sched.h"
|
||
|
|
#include "linux/mm.h"
|
||
|
|
#include "asm/page.h"
|
||
|
|
#include "asm/pgtable.h"
|
||
|
|
#include "asm/mmu.h"
|
||
|
|
#include "user_util.h"
|
||
|
|
#include "mem_user.h"
|
||
|
|
#include "mem.h"
|
||
|
|
#include "skas.h"
|
||
|
|
#include "os.h"
|
||
|
|
#include "tlb.h"
|
||
|
|
|
||
|
|
static void do_ops(int fd, struct host_vm_op *ops, int last)
|
||
|
|
{
|
||
|
|
struct host_vm_op *op;
|
||
|
|
int i;
|
||
|
|
|
||
|
|
for(i = 0; i <= last; i++){
|
||
|
|
op = &ops[i];
|
||
|
|
switch(op->type){
|
||
|
|
case MMAP:
|
||
|
|
map(fd, op->u.mmap.addr, op->u.mmap.len,
|
||
|
|
op->u.mmap.r, op->u.mmap.w, op->u.mmap.x,
|
||
|
|
op->u.mmap.fd, op->u.mmap.offset);
|
||
|
|
break;
|
||
|
|
case MUNMAP:
|
||
|
|
unmap(fd, (void *) op->u.munmap.addr,
|
||
|
|
op->u.munmap.len);
|
||
|
|
break;
|
||
|
|
case MPROTECT:
|
||
|
|
protect(fd, op->u.mprotect.addr, op->u.mprotect.len,
|
||
|
|
op->u.mprotect.r, op->u.mprotect.w,
|
||
|
|
op->u.mprotect.x);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
printk("Unknown op type %d in do_ops\n", op->type);
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
static void fix_range(struct mm_struct *mm, unsigned long start_addr,
|
||
|
|
unsigned long end_addr, int force)
|
||
|
|
{
|
||
|
|
int fd = mm->context.skas.mm_fd;
|
||
|
|
|
||
|
|
fix_range_common(mm, start_addr, end_addr, force, fd, do_ops);
|
||
|
|
}
|
||
|
|
|
||
|
|
void __flush_tlb_one_skas(unsigned long addr)
|
||
|
|
{
|
||
|
|
flush_tlb_kernel_range_common(addr, addr + PAGE_SIZE);
|
||
|
|
}
|
||
|
|
|
||
|
|
void flush_tlb_range_skas(struct vm_area_struct *vma, unsigned long start,
|
||
|
|
unsigned long end)
|
||
|
|
{
|
||
|
|
if(vma->vm_mm == NULL)
|
||
|
|
flush_tlb_kernel_range_common(start, end);
|
||
|
|
else fix_range(vma->vm_mm, start, end, 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
void flush_tlb_mm_skas(struct mm_struct *mm)
|
||
|
|
{
|
||
|
|
/* Don't bother flushing if this address space is about to be
|
||
|
|
* destroyed.
|
||
|
|
*/
|
||
|
|
if(atomic_read(&mm->mm_users) == 0)
|
||
|
|
return;
|
||
|
|
|
||
|
|
fix_range(mm, 0, host_task_size, 0);
|
||
|
|
flush_tlb_kernel_range_common(start_vm, end_vm);
|
||
|
|
}
|
||
|
|
|
||
|
|
void force_flush_all_skas(void)
|
||
|
|
{
|
||
|
|
fix_range(current->mm, 0, host_task_size, 1);
|
||
|
|
}
|