These changes are a raw update to a vanilla kernel 4.1.10, with the

[kvmfornfv.git] / kernel / drivers / infiniband / hw / qib / qib_keys.c

diff --git a/kernel/drivers/infiniband/hw/qib/qib_keys.c b/kernel/drivers/infiniband/hw/qib/qib_keys.c
index ad843c7..5afaa21 100644 (file)
--- a/kernel/drivers/infiniband/hw/qib/qib_keys.c
+++ b/kernel/drivers/infiniband/hw/qib/qib_keys.c
@@ -86,6 +86,10 @@ int qib_alloc_lkey(struct qib_mregion *mr, int dma_region)
         * unrestricted LKEY.
         */
        rkt->gen++;
+       /*
+        * bits are capped in qib_verbs.c to insure enough bits
+        * for generation number
+        */
        mr->lkey = (r << (32 - ib_qib_lkey_table_size)) |
                ((((1 << (24 - ib_qib_lkey_table_size)) - 1) & rkt->gen)
                 << 8);