From: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
To: Sagi Grimberg <sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Cc: Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>,
linux-rdma-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Chuck Lever <chuck.lever-QHcLZuEGTsvQT0dZR+AlfA@public.gmane.org>,
Eli Cohen <eli-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
Subject: Re: [PATCH rdma-rc 0/4] Remove mlx5 support for IB_DEVICE_LOCAL_DMA_LKEY
Date: Mon, 21 Sep 2015 10:41:27 -0600 [thread overview]
Message-ID: <20150921164127.GD3993@obsidianresearch.com> (raw)
In-Reply-To: <1442742767-8755-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
On Sun, Sep 20, 2015 at 12:52:43PM +0300, Sagi Grimberg wrote:
> The Connect-IB device has a specific issue with memory registration using
> the reserved lkey (device global_dma_lkey). This caused user-space memory
> registration which usually uses cached pre-registered memory keys to fail
> due to a device access error during registration. kernel-space memory
> registrations used an internal instance a physical memory key allocated with
> the private pd context, so this error didn't happen there.
I didn't read in super detail, but this all looks very sane to me.
Reviewed-By: Jason Gunthorpe <jgunthorpe-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
Jason
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prev parent reply other threads:[~2015-09-21 16:41 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-09-20 9:52 [PATCH rdma-rc 0/4] Remove mlx5 support for IB_DEVICE_LOCAL_DMA_LKEY Sagi Grimberg
2015-09-20 9:52 ` [PATCH rdma-rc 1/4] xprtrdma: Remove ib_get_dma_mr calls Sagi Grimberg
2015-09-20 9:52 ` Sagi Grimberg
2015-09-20 10:12 ` Sagi Grimberg
2015-09-20 10:12 ` Sagi Grimberg
[not found] ` <1442742767-8755-1-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2015-09-20 9:52 ` [PATCH rdma-rc 2/4] IB/iser: Add module parameter for always register memory Sagi Grimberg
[not found] ` <1442742767-8755-3-git-send-email-sagig-VPRAkNaXOzVWk0Htik3J/w@public.gmane.org>
2015-09-21 16:39 ` Jason Gunthorpe
[not found] ` <20150921163922.GC3993-ePGOBjL8dl3ta4EC/59zMFaTQe2KTcn/@public.gmane.org>
2015-09-21 16:42 ` Sagi Grimberg
2015-09-20 9:52 ` [PATCH rdma-rc 3/4] IB/mlx5: Remove support for IB_DEVICE_LOCAL_DMA_LKEY Sagi Grimberg
2015-09-20 9:52 ` [PATCH rdma-rc 4/4] IB/mlx5: Remove pa_lkey usages Sagi Grimberg
2015-09-21 16:41 ` Jason Gunthorpe [this message]
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