diff options
Diffstat (limited to 'include/qemu')
| -rw-r--r-- | include/qemu/userfaultfd.h | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/include/qemu/userfaultfd.h b/include/qemu/userfaultfd.h new file mode 100644 index 0000000000..6b74f92792 --- /dev/null +++ b/include/qemu/userfaultfd.h @@ -0,0 +1,35 @@ +/* + * Linux UFFD-WP support + * + * Copyright Virtuozzo GmbH, 2020 + * + * Authors: + * Andrey Gruzdev <andrey.gruzdev@virtuozzo.com> + * + * This work is licensed under the terms of the GNU GPL, version 2 or + * later. See the COPYING file in the top-level directory. + */ + +#ifndef USERFAULTFD_H +#define USERFAULTFD_H + +#include "qemu/osdep.h" +#include "exec/hwaddr.h" +#include <linux/userfaultfd.h> + +int uffd_query_features(uint64_t *features); +int uffd_create_fd(uint64_t features, bool non_blocking); +void uffd_close_fd(int uffd_fd); +int uffd_register_memory(int uffd_fd, void *addr, uint64_t length, + uint64_t mode, uint64_t *ioctls); +int uffd_unregister_memory(int uffd_fd, void *addr, uint64_t length); +int uffd_change_protection(int uffd_fd, void *addr, uint64_t length, + bool wp, bool dont_wake); +int uffd_copy_page(int uffd_fd, void *dst_addr, void *src_addr, + uint64_t length, bool dont_wake); +int uffd_zero_page(int uffd_fd, void *addr, uint64_t length, bool dont_wake); +int uffd_wakeup(int uffd_fd, void *addr, uint64_t length); +int uffd_read_events(int uffd_fd, struct uffd_msg *msgs, int count); +bool uffd_poll_events(int uffd_fd, int tmo); + +#endif /* USERFAULTFD_H */ |