summaryrefslogtreecommitdiffstats
path: root/kernel/drivers/infiniband/hw/qib
diff options
context:
space:
mode:
Diffstat (limited to 'kernel/drivers/infiniband/hw/qib')
-rw-r--r--kernel/drivers/infiniband/hw/qib/qib_keys.c4
-rw-r--r--kernel/drivers/infiniband/hw/qib/qib_verbs.c14
-rw-r--r--kernel/drivers/infiniband/hw/qib/qib_verbs.h2
3 files changed, 16 insertions, 4 deletions
diff --git a/kernel/drivers/infiniband/hw/qib/qib_keys.c b/kernel/drivers/infiniband/hw/qib/qib_keys.c
index ad843c786..5afaa2185 100644
--- 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);
diff --git a/kernel/drivers/infiniband/hw/qib/qib_verbs.c b/kernel/drivers/infiniband/hw/qib/qib_verbs.c
index 4a3599890..9dd5d9a05 100644
--- a/kernel/drivers/infiniband/hw/qib/qib_verbs.c
+++ b/kernel/drivers/infiniband/hw/qib/qib_verbs.c
@@ -40,6 +40,7 @@
#include <linux/rculist.h>
#include <linux/mm.h>
#include <linux/random.h>
+#include <linux/vmalloc.h>
#include "qib.h"
#include "qib_common.h"
@@ -2089,10 +2090,16 @@ int qib_register_ib_device(struct qib_devdata *dd)
* the LKEY). The remaining bits act as a generation number or tag.
*/
spin_lock_init(&dev->lk_table.lock);
+ /* insure generation is at least 4 bits see keys.c */
+ if (ib_qib_lkey_table_size > MAX_LKEY_TABLE_BITS) {
+ qib_dev_warn(dd, "lkey bits %u too large, reduced to %u\n",
+ ib_qib_lkey_table_size, MAX_LKEY_TABLE_BITS);
+ ib_qib_lkey_table_size = MAX_LKEY_TABLE_BITS;
+ }
dev->lk_table.max = 1 << ib_qib_lkey_table_size;
lk_tab_size = dev->lk_table.max * sizeof(*dev->lk_table.table);
dev->lk_table.table = (struct qib_mregion __rcu **)
- __get_free_pages(GFP_KERNEL, get_order(lk_tab_size));
+ vmalloc(lk_tab_size);
if (dev->lk_table.table == NULL) {
ret = -ENOMEM;
goto err_lk;
@@ -2265,7 +2272,7 @@ err_tx:
sizeof(struct qib_pio_header),
dev->pio_hdrs, dev->pio_hdrs_phys);
err_hdrs:
- free_pages((unsigned long) dev->lk_table.table, get_order(lk_tab_size));
+ vfree(dev->lk_table.table);
err_lk:
kfree(dev->qp_table);
err_qpt:
@@ -2319,8 +2326,7 @@ void qib_unregister_ib_device(struct qib_devdata *dd)
sizeof(struct qib_pio_header),
dev->pio_hdrs, dev->pio_hdrs_phys);
lk_tab_size = dev->lk_table.max * sizeof(*dev->lk_table.table);
- free_pages((unsigned long) dev->lk_table.table,
- get_order(lk_tab_size));
+ vfree(dev->lk_table.table);
kfree(dev->qp_table);
}
diff --git a/kernel/drivers/infiniband/hw/qib/qib_verbs.h b/kernel/drivers/infiniband/hw/qib/qib_verbs.h
index bfc8948fd..44ca28c83 100644
--- a/kernel/drivers/infiniband/hw/qib/qib_verbs.h
+++ b/kernel/drivers/infiniband/hw/qib/qib_verbs.h
@@ -647,6 +647,8 @@ struct qib_qpn_table {
struct qpn_map map[QPNMAP_ENTRIES];
};
+#define MAX_LKEY_TABLE_BITS 23
+
struct qib_lkey_table {
spinlock_t lock; /* protect changes in this struct */
u32 next; /* next unused index (speeds search) */