Re: [RESEND][PATCH 07/10][SCSI]mpt2sas: Added Reply Descriptor Post Queue (RDPQ) Array support

From: Martin K. Petersen
Date: Wed Apr 26 2017 - 18:26:28 EST



Sreekanth,

> We need to satisfy this condition on those system where 32 bit dma
> consistent mask is not supported and it only supports 64 bit dma
> consistent mask. So on these system we can't set
> pci_set_consistent_dma_mask() to DMA_BIT_MASK(32).

Which systems are you talking about?

It seems a bit unrealistic to require all devices to support 64-bit DMA.

--
Martin K. Petersen Oracle Linux Engineering