| commit | 1c9fe4409ce3e9c78b1ed96ee8ed699d4f03bf33 | [log] [tgz] |
|---|---|---|
| author | Andy Lutomirski <luto@kernel.org> | Wed Sep 06 19:54:54 2017 -0700 |
| committer | Linus Torvalds <torvalds@linux-foundation.org> | Wed Sep 06 20:12:57 2017 -0700 |
| tree | b0a9e9d2d4a7062dc6f20c463109af14e56c9c7e | |
| parent | 72c0098d92cedb11c7e0151e84918840a4e96b31 [diff] |
x86/mm: Document how CR4.PCIDE restore works While debugging a problem, I thought that using cr4_set_bits_and_update_boot() to restore CR4.PCIDE would be helpful. It turns out to be counterproductive. Add a comment documenting how this works. Signed-off-by: Andy Lutomirski <luto@kernel.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>