• Martin Schwidefsky's avatar
    s390/mm: implement dirty bits for large segment table entries · 152125b7
    Martin Schwidefsky authored
    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: default avatarMartin Schwidefsky <schwidefsky@de.ibm.com>
    152125b7
pgtable.c 39.4 KB