diff mbox series

[v2,15/15] scsi: hisi_sas: Set max optimal DMA size for v3 hw

Message ID 1620656249-68890-16-git-send-email-john.garry@huawei.com
State New
Headers show
Series dma mapping/iommu: Allow IOMMU IOVA rcache range to be configured | expand

Commit Message

John Garry May 10, 2021, 2:17 p.m. UTC 
For IOMMU strict mode, gives a big performance boost in some scenarios.

Signed-off-by: John Garry <john.garry@huawei.com>

---
 drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 5 +++++
 1 file changed, 5 insertions(+)

-- 
2.26.2
diff mbox series

Patch

diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
index 499c770d405c..365fc9de4be2 100644
--- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
+++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c
@@ -4675,6 +4675,11 @@  hisi_sas_v3_probe(struct pci_dev *pdev, const struct pci_device_id *id)
 	struct sas_ha_struct *sha;
 	int rc, phy_nr, port_nr, i;
 
+	rc = dma_set_max_opt_size(dev, PAGE_SIZE * HISI_SAS_SGE_PAGE_CNT);
+	/* We can live with other errors */
+	if (rc == -EPROBE_DEFER)
+		return rc;
+
 	rc = pci_enable_device(pdev);
 	if (rc)
 		goto err_out;