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| author |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-07-24 11:03:41 +0200 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2014-08-01 14:55:05 +0200 |
| commit | 152125b7a882df36a55a8eadbea6d0edf1461ee7 (patch) | |
| tree | 247d93a58d6ff9ff9ccbe66840acaa240069d879 /crypto | |
| parent | KVM: s390/mm: Fix page table locking vs. split pmd lock (diff) | |
| download | linux-dev-152125b7a882df36a55a8eadbea6d0edf1461ee7.tar.xz linux-dev-152125b7a882df36a55a8eadbea6d0edf1461ee7.zip | |
s390/mm: implement dirty bits for large segment table entries
The large segment table entry format has block of bits for the
ACC/F values for the large page. These bits are valid only if
another bit (AV bit 0x10000) of the segment table entry is set.
The ACC/F bits do not have a meaning if the AV bit is off.
This allows to put the THP splitting bit, the segment young bit
and the new segment dirty bit into the ACC/F bits as long as
the AV bit stays off. The dirty and young information is only
available if the pmd is large.
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'crypto')
0 files changed, 0 insertions, 0 deletions