SEGFLUSH(2)SEGFLUSH(2)NAMEsegflush - flush instruction and data caches
int segflush(void *va, ulong len)
Segflush invalidates any instruction cache and writes back any data
cache associated with pages contained in a segment. All subsequent new
pages in the segment will also be flushed when first referenced.
Va is an address within the segment to be flushed; it is rounded down
to the nearest page boundary. Len specifies the length in bytes of the
memory to flush; va+len is rounded up to the nearest page boundary.
Segflush works correctly when the memory straddles multiple segments.
Correct use of segflush depends on an understanding of the cache archi‐
tecture of the specific machine.
SEE ALSOsegattach(2), segbrk(2)