Messages in this thread Patch in this message | | | From | John Garry <> | Subject | [PATCH 6/6] scsi: hisi_sas: Set max optimal DMA size for v3 hw | Date | Fri, 19 Mar 2021 21:25:48 +0800 |
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For IOMMU strict mode, more than doubles throughput in some scenarios.
Signed-off-by: John Garry <john.garry@huawei.com> --- drivers/scsi/hisi_sas/hisi_sas_v3_hw.c | 2 ++ 1 file changed, 2 insertions(+)
diff --git a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c index 4580e081e489..2f77b418bbeb 100644 --- a/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c +++ b/drivers/scsi/hisi_sas/hisi_sas_v3_hw.c @@ -4684,6 +4684,8 @@ hisi_sas_v3_probe(struct pci_dev *pdev, const struct pci_device_id *id) goto err_out_regions; } + dma_set_max_opt_size(dev, PAGE_SIZE * HISI_SAS_SGE_PAGE_CNT); + shost = hisi_sas_shost_alloc_pci(pdev); if (!shost) { rc = -ENOMEM; -- 2.26.2
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