mirror of
https://github.com/edk2-porting/linux-next.git
synced 2024-12-23 20:53:53 +08:00
1da177e4c3
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
86 lines
2.0 KiB
C
86 lines
2.0 KiB
C
/*
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* Copyright (C) 2002 Jeff Dike (jdike@karaya.com)
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* Copyright 2003 PathScale, Inc.
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* Licensed under the GPL
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*/
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#include "linux/stddef.h"
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#include "linux/sched.h"
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#include "linux/mm.h"
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#include "asm/page.h"
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#include "asm/pgtable.h"
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#include "asm/mmu.h"
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#include "user_util.h"
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#include "mem_user.h"
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#include "mem.h"
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#include "skas.h"
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#include "os.h"
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#include "tlb.h"
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static void do_ops(int fd, struct host_vm_op *ops, int last)
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{
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struct host_vm_op *op;
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int i;
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for(i = 0; i <= last; i++){
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op = &ops[i];
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switch(op->type){
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case MMAP:
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map(fd, op->u.mmap.addr, op->u.mmap.len,
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op->u.mmap.r, op->u.mmap.w, op->u.mmap.x,
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op->u.mmap.fd, op->u.mmap.offset);
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break;
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case MUNMAP:
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unmap(fd, (void *) op->u.munmap.addr,
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op->u.munmap.len);
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break;
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case MPROTECT:
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protect(fd, op->u.mprotect.addr, op->u.mprotect.len,
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op->u.mprotect.r, op->u.mprotect.w,
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op->u.mprotect.x);
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break;
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default:
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printk("Unknown op type %d in do_ops\n", op->type);
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break;
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}
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}
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}
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static void fix_range(struct mm_struct *mm, unsigned long start_addr,
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unsigned long end_addr, int force)
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{
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int fd = mm->context.skas.mm_fd;
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fix_range_common(mm, start_addr, end_addr, force, fd, do_ops);
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}
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void __flush_tlb_one_skas(unsigned long addr)
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{
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flush_tlb_kernel_range_common(addr, addr + PAGE_SIZE);
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}
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void flush_tlb_range_skas(struct vm_area_struct *vma, unsigned long start,
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unsigned long end)
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{
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if(vma->vm_mm == NULL)
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flush_tlb_kernel_range_common(start, end);
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else fix_range(vma->vm_mm, start, end, 0);
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}
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void flush_tlb_mm_skas(struct mm_struct *mm)
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{
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/* Don't bother flushing if this address space is about to be
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* destroyed.
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*/
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if(atomic_read(&mm->mm_users) == 0)
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return;
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fix_range(mm, 0, host_task_size, 0);
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flush_tlb_kernel_range_common(start_vm, end_vm);
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}
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void force_flush_all_skas(void)
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{
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fix_range(current->mm, 0, host_task_size, 1);
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}
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