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authorMax Gurtovoy <maxg@mellanox.com>2017-08-28 12:52:27 +0300
committerChristoph Hellwig <hch@lst.de>2017-08-30 15:46:10 +0300
commitb925a2dc165e5ec2330ca1256704faef8ed96913 (patch)
tree544fd60925f8a4e8742b6cbf59f3d66d36d90fbe /drivers/nvme
parente9d8a0fdeacd843c85dcef480cdb2ab76bcdb6e4 (diff)
downloadlinux-b925a2dc165e5ec2330ca1256704faef8ed96913.tar.xz
nvme-rdma: default MR page size to 4k
Due to various page sizes in the system (IOMMU/device/kernel), we set the fabrics controller page size to 4k and block layer boundaries accordinglly. In architectures that uses different kernel page size we'll have a mismatch to the MR page size that may cause a mapping error. Update the MR page size to correspond to the core ctrl settings. Signed-off-by: Max Gurtovoy <maxg@mellanox.com> Reviewed-by: Sagi Grimberg <sagi@grimberg.me> Signed-off-by: Christoph Hellwig <hch@lst.de>
Diffstat (limited to 'drivers/nvme')
-rw-r--r--drivers/nvme/host/rdma.c8
1 files changed, 6 insertions, 2 deletions
diff --git a/drivers/nvme/host/rdma.c b/drivers/nvme/host/rdma.c
index da04df1af231..a03299d77922 100644
--- a/drivers/nvme/host/rdma.c
+++ b/drivers/nvme/host/rdma.c
@@ -920,7 +920,11 @@ static int nvme_rdma_map_sg_fr(struct nvme_rdma_queue *queue,
struct nvme_keyed_sgl_desc *sg = &c->common.dptr.ksgl;
int nr;
- nr = ib_map_mr_sg(req->mr, req->sg_table.sgl, count, NULL, PAGE_SIZE);
+ /*
+ * Align the MR to a 4K page size to match the ctrl page size and
+ * the block virtual boundary.
+ */
+ nr = ib_map_mr_sg(req->mr, req->sg_table.sgl, count, NULL, SZ_4K);
if (nr < count) {
if (nr < 0)
return nr;
@@ -1583,7 +1587,7 @@ static int nvme_rdma_configure_admin_queue(struct nvme_rdma_ctrl *ctrl)
goto out_cleanup_queue;
ctrl->ctrl.max_hw_sectors =
- (ctrl->max_fr_pages - 1) << (PAGE_SHIFT - 9);
+ (ctrl->max_fr_pages - 1) << (ilog2(SZ_4K) - 9);
error = nvme_init_identify(&ctrl->ctrl);
if (error)