diff options
| author | ryo <ryo@NetBSD.org> | 2022-01-31 09:16:09 +0000 |
|---|---|---|
| committer | ryo <ryo@NetBSD.org> | 2022-01-31 09:16:09 +0000 |
| commit | 4b1de1f06c73279d79ffbb2d76bd6bab3d210919 (patch) | |
| tree | b976294e604316c67f14922751097e0526a3ae05 /sys/dev/microcode/run | |
| parent | 5835b9452d46c287d81f7d9874f4a9dc40a173b3 (diff) | |
add support Hardware updates to Access flag and Dirty state (FEAT_HAFDBS)
- The DBM bit of the PTE is now used to determine if it is writable, and
the AF bit is treated entirely as a reference bit. A valid PTE is always
treated as readable. There can be no valid PTE that is not readable.
- LX_BLKPAG_OS_{READ,WRITE} are used only for debugging purposes,
and has been superseded by LX_BLKPAG_AF and LX_BLKPAG_DBM.
- Improve comment
The need for reference/modify emulation has been eliminated,
and access/permission faults have been reduced, however,
there has been little change in overall performance.
Diffstat (limited to 'sys/dev/microcode/run')
0 files changed, 0 insertions, 0 deletions
