/* * 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); } void force_flush_all_skas(void) { fix_range(current->mm, 0, host_task_size, 1); }