andrey/rCore-Tutorial-v3
1
0
Fork 0
mirror of https://github.com/rcore-os/rCore-Tutorial-v3.git synced 2024-11-24 10:26:25 +04:00
Code Issues Projects Releases Wiki Activity

Fix end_va bug in translated_byte_buffer

Browse Source
This commit is contained in:
Yifan Wu 2021-03-23 19:19:21 +08:00
parent 902e0a2f69
commit 3ea60ee964
1 changed files with 5 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
os/src/mm/page_table.rs
View File

@ -166,7 +166,11 @@ pub fn translated_byte_buffer(token: usize, ptr: *const u8, len: usize) -> Vec<&
vpn.step();
let mut end_va: VirtAddr = vpn.into();
end_va = end_va.min(VirtAddr::from(end));
v.push(&mut ppn.get_bytes_array()[start_va.page_offset()..end_va.page_offset()]);
if end_va.page_offset() == 0 {
v.push(&mut ppn.get_bytes_array()[start_va.page_offset()..]);
} else {
v.push(&mut ppn.get_bytes_array()[start_va.page_offset()..end_va.page_offset()]);
}
start = end_va.into();
}
v