feat: implement synchronisation to protecting access to PTEs of SPTs during eviction

2024-12-05 16:51:15 +00:00
parent e779e8ac7c
commit d03e253046
6 changed files with 114 additions and 45 deletions
--- a/src/userprog/syscall.c
+++ b/src/userprog/syscall.c
@@ -440,8 +440,8 @@ syscall_mmap (int fd, void *addr)
      off_t read_bytes = file_size - ofs < PGSIZE ? file_size - ofs : PGSIZE;
      off_t zero_bytes = PGSIZE - read_bytes;

-      if (page_insert (file, ofs, addr + ofs, read_bytes, zero_bytes, true,
-                       PAGE_FILE) == NULL)
+      if (page_insert_file (file, ofs, addr + ofs, read_bytes, zero_bytes, true,
+                            PAGE_MMAP) == NULL)
        return MMAP_FAILURE;
    }

@@ -450,7 +450,6 @@ syscall_mmap (int fd, void *addr)
  if (mmap == NULL)
      return MMAP_FAILURE;

-
  return mmap->mapping;
 }