LXR qemu/include/qemu/userfaultfd.h

   1/*
   2 * Linux UFFD-WP support
   3 *
   4 * Copyright Virtuozzo GmbH, 2020
   5 *
   6 * Authors:
   7 *  Andrey Gruzdev   <andrey.gruzdev@virtuozzo.com>
   8 *
   9 * This work is licensed under the terms of the GNU GPL, version 2 or
  10 * later.  See the COPYING file in the top-level directory.
  11 */
  12
  13#ifndef USERFAULTFD_H
  14#define USERFAULTFD_H
  15
  16#include "qemu/osdep.h"
  17#include "exec/hwaddr.h"
  18#include <linux/userfaultfd.h>
  19
  20int uffd_query_features(uint64_t *features);
  21int uffd_create_fd(uint64_t features, bool non_blocking);
  22void uffd_close_fd(int uffd_fd);
  23int uffd_register_memory(int uffd_fd, void *addr, uint64_t length,
  24        uint64_t mode, uint64_t *ioctls);
  25int uffd_unregister_memory(int uffd_fd, void *addr, uint64_t length);
  26int uffd_change_protection(int uffd_fd, void *addr, uint64_t length,
  27        bool wp, bool dont_wake);
  28int uffd_copy_page(int uffd_fd, void *dst_addr, void *src_addr,
  29        uint64_t length, bool dont_wake);
  30int uffd_zero_page(int uffd_fd, void *addr, uint64_t length, bool dont_wake);
  31int uffd_wakeup(int uffd_fd, void *addr, uint64_t length);
  32int uffd_read_events(int uffd_fd, struct uffd_msg *msgs, int count);
  33bool uffd_poll_events(int uffd_fd, int tmo);
  34
  35#endif /* USERFAULTFD_H */
  36