Tateisi/rcore-tutorial
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Pipe OK.

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This commit is contained in:
Yifan Wu 2020-12-14 16:18:33 +08:00
parent e93a4a0b76
commit 2d34cab989
14 changed files with 218 additions and 18 deletions
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6
os/src/mm/page_table.rs
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@ -164,7 +164,11 @@ 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