From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: John Garry <john.garry@huawei.com>
Cc: jejb@linux.vnet.ibm.com, martin.petersen@oracle.com,
linuxarm@huawei.com, linux-scsi@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: Re: [PATCH 0/7] hisi_sas: Misc bugfixes and an optimisation patch
Date: Wed, 10 Oct 2018 21:58:25 -0400 [thread overview]
Message-ID: <yq18t354532.fsf@oracle.com> (raw)
In-Reply-To: <1537801594-207139-1-git-send-email-john.garry@huawei.com> (John Garry's message of "Mon, 24 Sep 2018 23:06:27 +0800")
John,
> However it does block us in future from enabling SCSI MQ in the driver.
We're going to remove the legacy I/O path so I'm not particularly keen
on merging something that's going in the opposite direction.
> This is because the IPTT index must be a unique value per HBA. However,
> if we switched to SCSI MQ, the block layer tag becomes unique per queue,
> and not per HBA.
That doesn't sound right.
--
Martin K. Petersen Oracle Linux Engineering
WARNING: multiple messages have this Message-ID (diff)
From: "Martin K. Petersen" <martin.petersen@oracle.com>
To: John Garry <john.garry@huawei.com>
Cc: <jejb@linux.vnet.ibm.com>, <martin.petersen@oracle.com>,
<linuxarm@huawei.com>, <linux-scsi@vger.kernel.org>,
<linux-kernel@vger.kernel.org>
Subject: Re: [PATCH 0/7] hisi_sas: Misc bugfixes and an optimisation patch
Date: Wed, 10 Oct 2018 21:58:25 -0400 [thread overview]
Message-ID: <yq18t354532.fsf@oracle.com> (raw)
In-Reply-To: <1537801594-207139-1-git-send-email-john.garry@huawei.com> (John Garry's message of "Mon, 24 Sep 2018 23:06:27 +0800")
John,
> However it does block us in future from enabling SCSI MQ in the driver.
We're going to remove the legacy I/O path so I'm not particularly keen
on merging something that's going in the opposite direction.
> This is because the IPTT index must be a unique value per HBA. However,
> if we switched to SCSI MQ, the block layer tag becomes unique per queue,
> and not per HBA.
That doesn't sound right.
--
Martin K. Petersen Oracle Linux Engineering
next prev parent reply other threads:[~2018-10-11 1:58 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-09-24 15:06 [PATCH 0/7] hisi_sas: Misc bugfixes and an optimisation patch John Garry
2018-09-24 15:06 ` John Garry
2018-09-24 15:06 ` [PATCH 1/7] scsi: hisi_sas: Feed back linkrate(max/min) when re-attached John Garry
2018-09-24 15:06 ` John Garry
2018-09-24 15:06 ` [PATCH 2/7] scsi: hisi_sas: Move evaluation of hisi_hba in hisi_sas_task_prep() John Garry
2018-09-24 15:06 ` John Garry
2018-09-24 15:06 ` [PATCH 3/7] scsi: hisi_sas: Fix the race between IO completion and timeout for SMP/internal IO John Garry
2018-09-24 15:06 ` John Garry
2018-09-24 15:06 ` [PATCH 4/7] scsi: hisi_sas: Free slot later in slot_complete_vx_hw() John Garry
2018-09-24 15:06 ` John Garry
2018-09-24 15:06 ` [PATCH 5/7] scsi: hisi_sas: unmask interrupts ent72 and ent74 John Garry
2018-09-24 15:06 ` John Garry
2018-09-24 15:06 ` [PATCH 6/7] scsi: hisi_sas: Use block layer tag instead for IPTT John Garry
2018-09-24 15:06 ` John Garry
2018-09-24 15:06 ` [PATCH 7/7] scsi: hisi_sas: Update v3 hw AIP_LIMIT and CFG_AGING_TIME register values John Garry
2018-09-24 15:06 ` John Garry
2018-10-04 15:30 ` [PATCH 0/7] hisi_sas: Misc bugfixes and an optimisation patch John Garry
2018-10-04 15:30 ` John Garry
2018-10-11 1:58 ` Martin K. Petersen [this message]
2018-10-11 1:58 ` Martin K. Petersen
2018-10-11 6:36 ` Christoph Hellwig
2018-10-11 9:59 ` John Garry
2018-10-11 9:59 ` John Garry
2018-10-11 10:15 ` Christoph Hellwig
2018-10-11 13:12 ` John Garry
2018-10-11 13:12 ` John Garry
2018-10-11 13:32 ` Ming Lei
2018-10-11 14:07 ` John Garry
2018-10-11 14:07 ` John Garry
2018-10-11 23:36 ` Ming Lei
2018-10-12 9:02 ` John Garry
2018-10-12 9:02 ` John Garry
2018-10-12 13:30 ` Ming Lei
2018-10-12 13:30 ` Ming Lei
2018-10-12 10:47 ` John Garry
2018-10-12 10:47 ` John Garry
2018-10-16 4:28 ` Martin K. Petersen
2018-10-16 4:28 ` Martin K. Petersen
2018-10-16 8:28 ` John Garry
2018-10-16 8:28 ` John Garry
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