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

[Leonid Keller]

You can apply it, if you feel that useful.

> -----Original Message-----
> From: Fab Tillier [mailto:ftillier at silverstorm.com] 
> Sent: Thursday, February 09, 2006 8:10 PM
> To: Leonid Keller
> Cc: openib-windows at openib.org
> Subject: RE: [Openib-windows] RE: [PATCH] Support 32-bit 
> kernel bypass on 64-bitkernel
> 
> 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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> 
>