Re: [PATCH for-next 03/10] IB/core: Support accessing SA in virtualized environment

[Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>]

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On 03/01/2016 02:46 PM, Eli Cohen wrote:
> On Tue, Mar 01, 2016 at 12:31:53PM -0700, Jason Gunthorpe wrote:
>>
>> I mean opensm supports the GUID Alias scheme for virtualization, this
>> new virtualization scheme is not compatible, and we shouldn't have the
>> kernel drop support for existing working SMs, by, eg, replacing the
>> mlx4 guid alias scheme with this new scheme.
>>
>> I'm guessing a user controlled switch is going to be necessary here to
>> pick GUID alias or port port virtualization.
>>
> 
> The alias GUID mechanism remains and can be used with mlx4 devices.
> With this scheme the admin configures the port and node GUIDs using
> iprout2 which ends up in the hardware driver configuring the deivce. A
> virtualization aware SM can read this configuration through MADs.
> 

If the alias GUID mechanism is to be retained, then we need another NDO
entry point for setting P_Keys on alias GUID VFs.  If we are going to
switch over to using iproute2, then the solution needs to be complete.

-- 
Doug Ledford <dledford-H+wXaHxf7aLQT0dZR+AlfA@public.gmane.org>
              GPG KeyID: 0E572FDD



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