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/Linux-v4.19/arch/s390/mm/
Dgmap.c1372 unsigned long r3o, *r3e, *sgt; in gmap_unshadow_sgt() local
1376 r3e = gmap_table_walk(sg, raddr, 2); /* get region-3 pointer */ in gmap_unshadow_sgt()
1377 if (!r3e || !(*r3e & _REGION_ENTRY_ORIGIN)) in gmap_unshadow_sgt()
1380 r3o = (unsigned long) (r3e - ((raddr & _REGION3_INDEX) >> _REGION3_SHIFT)); in gmap_unshadow_sgt()
1382 sgt = (unsigned long *)(*r3e & _REGION_ENTRY_ORIGIN); in gmap_unshadow_sgt()
1383 *r3e = _REGION3_ENTRY_EMPTY; in gmap_unshadow_sgt()