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authorryo <ryo@NetBSD.org>2022-01-31 09:16:09 +0000
committerryo <ryo@NetBSD.org>2022-01-31 09:16:09 +0000
commit4b1de1f06c73279d79ffbb2d76bd6bab3d210919 (patch)
treeb976294e604316c67f14922751097e0526a3ae05 /sys/dev/microcode/tools
parent5835b9452d46c287d81f7d9874f4a9dc40a173b3 (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 - LX_BLKPAG_OS_{READ,WRITE} are used only for debugging purposes, and has been superseded by LX_BLKPAG_AF and LX_BLKPAG_DBM.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/tools')
0 files changed, 0 insertions, 0 deletions