From: Bart Van Assche <Bart.VanAssche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
To: "alex.estrin-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org"
<alex.estrin-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
"dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org"
<dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
Cc: "linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org"
<linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
"gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org"
<gregkh-hQyY1W1yCW8ekmWlsbkhG0B+6BGkLq7r@public.gmane.org>
Subject: Re: [PATCH v2 00/26] IB: Optimize DMA mapping
Date: Fri, 13 Jan 2017 21:59:32 +0000 [thread overview]
Message-ID: <1484344759.2679.26.camel@sandisk.com> (raw)
In-Reply-To: <F3529576D8E232409F431C309E29399336C5FF78-8k97q/ur5Z1cIJlls4ac1rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
On Fri, 2017-01-13 at 21:08 +0000, Estrin, Alex wrote:
> It didn't fix the failure... Apparently there is an issue with generic
> mapping itself.
Hello Alex,
The generic mapping code in lib/dma-virt.c works fine with at least the rxe
driver. Additionally, as far as I can see the mapping code in lib/dma-virt.c
is identical to the mapping in drivers/infiniband/sw/rdmavt/dma.c. What is
not clear to me however is how my patches can have caused the SDMA engine
error messages? As far as I can see the code in
drivers/infiniband/hw/hfi1/sdma.c uses PCI DMA mapping operations instead of
the generic dma_virt_ops. Is that correct?
Thanks,
Bart.--
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WARNING: multiple messages have this Message-ID (diff)
From: Bart Van Assche <Bart.VanAssche@sandisk.com>
To: "alex.estrin@intel.com" <alex.estrin@intel.com>,
"dledford@redhat.com" <dledford@redhat.com>
Cc: "linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"linux-rdma@vger.kernel.org" <linux-rdma@vger.kernel.org>,
"gregkh@linuxfoundation.org" <gregkh@linuxfoundation.org>
Subject: Re: [PATCH v2 00/26] IB: Optimize DMA mapping
Date: Fri, 13 Jan 2017 21:59:32 +0000 [thread overview]
Message-ID: <1484344759.2679.26.camel@sandisk.com> (raw)
In-Reply-To: <F3529576D8E232409F431C309E29399336C5FF78@CRSMSX102.amr.corp.intel.com>
On Fri, 2017-01-13 at 21:08 +0000, Estrin, Alex wrote:
> It didn't fix the failure... Apparently there is an issue with generic
> mapping itself.
Hello Alex,
The generic mapping code in lib/dma-virt.c works fine with at least the rxe
driver. Additionally, as far as I can see the mapping code in lib/dma-virt.c
is identical to the mapping in drivers/infiniband/sw/rdmavt/dma.c. What is
not clear to me however is how my patches can have caused the SDMA engine
error messages? As far as I can see the code in
drivers/infiniband/hw/hfi1/sdma.c uses PCI DMA mapping operations instead of
the generic dma_virt_ops. Is that correct?
Thanks,
Bart.
next prev parent reply other threads:[~2017-01-13 21:59 UTC|newest]
Thread overview: 85+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-01-12 19:06 [PATCH v2 00/26] IB: Optimize DMA mapping Bart Van Assche
2017-01-12 19:06 ` Bart Van Assche
2017-01-12 19:06 ` [PATCH v2 01/26] treewide: Constify most dma_map_ops structures Bart Van Assche
2017-01-12 19:06 ` Bart Van Assche
2017-01-12 19:06 ` [PATCH v2 02/26] treewide: Move dma_ops from struct dev_archdata into struct device Bart Van Assche
2017-01-12 19:06 ` Bart Van Assche
[not found] ` <20170112190718.6728-3-bart.vanassche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2017-01-19 9:10 ` Greg Kroah-Hartman
2017-01-19 9:10 ` Greg Kroah-Hartman
2017-01-12 19:06 ` [PATCH v2 04/26] treewide: Consolidate get_dma_ops() implementations Bart Van Assche
2017-01-12 19:06 ` Bart Van Assche
2017-01-12 19:07 ` [PATCH v2 10/26] IB: Use dma_virt_ops instead of duplicating it Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
2017-01-12 19:07 ` [PATCH v2 11/26] RDS: IB: Remove an unused structure member Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
2017-01-12 19:07 ` [PATCH v2 12/26] IB: Convert ib_dma_*_coherent() argument type from u64 into dma_addr_t Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
2017-01-12 19:07 ` [PATCH v2 13/26] IB/core: Inline ib_dma_map_*() functions Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
2017-01-12 19:07 ` [PATCH v2 14/26] IB/mlx4: " Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
2017-01-12 19:07 ` [PATCH v2 17/26] IB/iser: " Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
[not found] ` <20170112190718.6728-18-bart.vanassche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2017-01-13 21:26 ` Sagi Grimberg
2017-01-13 21:26 ` Sagi Grimberg
2017-01-12 19:07 ` [PATCH v2 18/26] IB/isert: " Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
2017-01-13 21:26 ` Sagi Grimberg
2017-01-12 19:07 ` [PATCH v2 19/26] IB/srp: " Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
2017-01-12 19:07 ` [PATCH v2 20/26] IB/srpt: " Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
2017-01-12 19:07 ` [PATCH v2 21/26] staging/lustre: " Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
2017-01-12 19:07 ` [PATCH v2 22/26] nvme-rdma: " Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
2017-01-12 19:07 ` [PATCH v2 23/26] net/9p: " Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
2017-01-12 19:07 ` [PATCH v2 24/26] net/rds: " Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
[not found] ` <20170112190718.6728-25-bart.vanassche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2017-01-12 19:18 ` santosh.shilimkar-QHcLZuEGTsvQT0dZR+AlfA
2017-01-12 19:18 ` santosh.shilimkar
2017-01-12 19:07 ` [PATCH v2 25/26] xprtrdma: " Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
2017-01-12 19:19 ` Chuck Lever
2017-01-12 19:07 ` [PATCH v2 26/26] IB/core: Remove " Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
[not found] ` <20170112190718.6728-1-bart.vanassche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2017-01-12 19:06 ` [PATCH v2 03/26] treewide: Consolidate set_dma_ops() implementations Bart Van Assche
2017-01-12 19:06 ` Bart Van Assche
2017-01-12 19:06 ` Bart Van Assche
2017-01-12 19:06 ` Bart Van Assche
2017-01-12 19:06 ` [PATCH v2 05/26] lib/dma-noop: Clarify a comment Bart Van Assche
2017-01-12 19:06 ` Bart Van Assche
2017-01-12 19:06 ` [PATCH v2 06/26] lib/dma-noop: Only build dma_noop_ops for m32r and s390 Bart Van Assche
2017-01-12 19:06 ` Bart Van Assche
[not found] ` <20170112190718.6728-7-bart.vanassche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2017-01-13 8:38 ` Christian Borntraeger
2017-01-13 8:38 ` Christian Borntraeger
2017-01-12 19:06 ` [PATCH v2 07/26] lib/dma-virt: Add dma_virt_ops Bart Van Assche
2017-01-12 19:06 ` Bart Van Assche
2017-01-12 19:07 ` [PATCH v2 08/26] IB/hf1: Remove DMA mapping code Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
2017-01-12 19:07 ` [PATCH v2 09/26] IB/qib: " Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
2017-01-12 19:07 ` [PATCH v2 15/26] IB/mlx5: Inline ib_dma_map_*() functions Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
2017-01-12 19:07 ` [PATCH v2 16/26] IB/IPoIB: " Bart Van Assche
2017-01-12 19:07 ` Bart Van Assche
[not found] ` <20170112190718.6728-17-bart.vanassche-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2017-01-13 11:33 ` Yuval Shaia
2017-01-13 11:33 ` Yuval Shaia
2017-01-13 18:27 ` [PATCH v2 00/26] IB: Optimize DMA mapping Estrin, Alex
2017-01-13 18:27 ` Estrin, Alex
2017-01-13 20:18 ` Bart Van Assche
2017-01-13 21:08 ` Estrin, Alex
[not found] ` <F3529576D8E232409F431C309E29399336C5FF78-8k97q/ur5Z1cIJlls4ac1rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2017-01-13 21:59 ` Bart Van Assche [this message]
2017-01-13 21:59 ` Bart Van Assche
[not found] ` <1484344759.2679.26.camel-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2017-01-14 2:05 ` Estrin, Alex
2017-01-14 2:05 ` Estrin, Alex
[not found] ` <F3529576D8E232409F431C309E29399336C6006C-8k97q/ur5Z1cIJlls4ac1rfspsVTdybXVpNB7YpNyf8@public.gmane.org>
2017-01-17 21:48 ` Bart Van Assche
2017-01-17 21:48 ` Bart Van Assche
2017-01-17 22:00 ` Bart Van Assche
[not found] ` <1484690386.2729.8.camel-XdAiOPVOjttBDgjK7y7TUQ@public.gmane.org>
2017-01-17 22:27 ` Jason Gunthorpe
2017-01-17 22:27 ` Jason Gunthorpe
2017-01-17 22:33 ` Bart Van Assche
2017-01-17 22:50 ` Jason Gunthorpe
2017-01-13 21:26 ` Sagi Grimberg
2017-01-13 21:26 ` Sagi Grimberg
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