[Openib-windows] RE: [PATCH] Support 32-bit kernel bypass on 64-bitkernel

[Fab Tillier]

Hi Leonid,

What's the status of this patch?  Are you going to apply it, do you want me to,
or is there more discussion needed?

Thanks,

- Fab

> -----Original Message-----
> From: Tillier, Fabian
> Sent: Thursday, February 02, 2006 10:38 PM
> To: 'Leonid Keller'
> Cc: openib-windows at openib.org
> Subject: [Openib-windows] RE: [PATCH] Support 32-bit kernel bypass on 64-
> bitkernel
> 
> Hi Loenid,
> 
> >  Hi Fab,
> > I'd like first to understand the reasons of adding of this patch.
> > I mean, we are preparing now a new release, which will support the work
> > of 32-bit applications over a 64-bit kernel.
> 
> You mean the new HCA driver?  The rest of the stack already supports 32-bit
> apps
> on 64-bit kernels, so the only missing link is the HCA driver.  There are 32-
> bit
> MPI apps where the value of IB is lost due to the lack of kernel bypass when
> using WSD, hence the patch.  If you're talking about the new HCA driver, is
> updated source in SVN somewhere?
> 
> > Therefore I don't see as worth an effort of adding and testing of your
> > patch.
> > What do you think ?
> 
> If the current HCA driver is going to reach its end of life, there's no harm
> in
> putting the patch in - it only changes the HCA driver, and allows us to have
> support for 32-bit apps now.  It's a minor change, and gives us a smaller
> change
> than switching HCA drivers altogether.  It also gives us a reference point
> against which to compare the new HCA driver, which can't hurt.
> 
> - Fab
> 
> 
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