Re: [PATCH rdma-rc 0/4] Remove mlx5 support for IB_DEVICE_LOCAL_DMA_LKEY

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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@xxxxxxxxxxxxxxxxxxxx>

Jason
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