From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
"jejb\@kernel.org" <jejb@kernel.org>,
"linux-scsi\@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"linux-kernel\@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Christoph Hellwig <hch@infradead.org>
Subject: Re: [RESEND][PATCH 07/10][SCSI]mpt2sas: Added Reply Descriptor Post Queue (RDPQ) Array support
Date: Wed, 26 Apr 2017 18:25:23 -0400 [thread overview]
Message-ID: <yq1mvb2ajsc.fsf@oracle.com> (raw)
In-Reply-To: <CAK=zhgq=DfOZGjLcid4qJA+L_Vs4UjOHAmJza5Zh-V7u=LxcsQ@mail.gmail.com> (Sreekanth Reddy's message of "Tue, 25 Apr 2017 17:21:07 +0530")
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
WARNING: multiple messages have this Message-ID (diff)
From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: Sreekanth Reddy <sreekanth.reddy@broadcom.com>
Cc: "Martin K. Petersen" <martin.petersen@oracle.com>,
"jejb@kernel.org" <jejb@kernel.org>,
"linux-scsi@vger.kernel.org" <linux-scsi@vger.kernel.org>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
Christoph Hellwig <hch@infradead.org>
Subject: Re: [RESEND][PATCH 07/10][SCSI]mpt2sas: Added Reply Descriptor Post Queue (RDPQ) Array support
Date: Wed, 26 Apr 2017 18:25:23 -0400 [thread overview]
Message-ID: <yq1mvb2ajsc.fsf@oracle.com> (raw)
In-Reply-To: <CAK=zhgq=DfOZGjLcid4qJA+L_Vs4UjOHAmJza5Zh-V7u=LxcsQ@mail.gmail.com> (Sreekanth Reddy's message of "Tue, 25 Apr 2017 17:21:07 +0530")
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
next prev parent reply other threads:[~2017-04-26 22:26 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-06-25 10:34 [RESEND][PATCH 07/10][SCSI]mpt2sas: Added Reply Descriptor Post Queue (RDPQ) Array support Reddy, Sreekanth
2014-06-25 10:34 ` Reddy, Sreekanth
2014-07-22 3:10 ` Martin K. Petersen
2014-07-22 3:10 ` Martin K. Petersen
[not found] ` <CAK=zhgoQt5J=jh4jShAy5rBXNz34sN-tqf=uZDkY4zQJ9XhM5g@mail.gmail.com>
2014-07-23 1:25 ` Martin K. Petersen
2014-07-23 17:37 ` Sreekanth Reddy
2014-07-23 19:46 ` Martin K. Petersen
2014-07-25 12:57 ` Sreekanth Reddy
2014-07-25 19:43 ` Martin K. Petersen
2014-07-30 14:55 ` Sreekanth Reddy
2014-08-05 18:46 ` Martin K. Petersen
[not found] ` <CAK=zhgpqW-t11JKiBRRM7Z4TEMyaEUBX943qT8faaKPk6Pk4XA@mail.gmail.com>
[not found] ` <CAK=zhgpiyt9xukGCNDOpEDmWRwFSMCcEiUQ190BW0UgiLGVP6g@mail.gmail.com>
2014-08-11 13:17 ` Sreekanth Reddy
2014-08-12 2:32 ` Martin K. Petersen
2017-04-25 11:51 ` Sreekanth Reddy
2017-04-26 22:25 ` Martin K. Petersen [this message]
2017-04-26 22:25 ` Martin K. Petersen
2017-04-27 9:15 ` Kashyap Desai
2014-08-12 9:24 Sreekanth Reddy
2014-08-12 9:37 ` Joe Perches
2014-08-12 9:51 ` Sreekanth Reddy
2014-08-21 20:35 ` Martin K. Petersen
2014-08-23 15:04 [RESEND][PATCH 07/10] [SCSI] mpt2sas: " Sreekanth Reddy
2014-08-24 15:37 ` Christoph Hellwig
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