diff options
Diffstat (limited to 'util/mmap-alloc.c')
-rw-r--r-- | util/mmap-alloc.c | 25 |
1 files changed, 25 insertions, 0 deletions
diff --git a/util/mmap-alloc.c b/util/mmap-alloc.c index 2f55f5e94f..3ec029a9ea 100644 --- a/util/mmap-alloc.c +++ b/util/mmap-alloc.c @@ -40,6 +40,31 @@ size_t qemu_fd_getpagesize(int fd) return getpagesize(); } +size_t qemu_mempath_getpagesize(const char *mem_path) +{ +#ifdef CONFIG_LINUX + struct statfs fs; + int ret; + + do { + ret = statfs(mem_path, &fs); + } while (ret != 0 && errno == EINTR); + + if (ret != 0) { + fprintf(stderr, "Couldn't statfs() memory path: %s\n", + strerror(errno)); + exit(1); + } + + if (fs.f_type == HUGETLBFS_MAGIC) { + /* It's hugepage, return the huge page size */ + return fs.f_bsize; + } +#endif + + return getpagesize(); +} + void *qemu_ram_mmap(int fd, size_t size, size_t align, bool shared) { /* |