[ofa-general] Re: Re: OFED HA related question

[Tang, Changqing]

> -----Original Message-----
> > > On Wed, May 16, 2007 at 07:03:13PM -0700, Roland Dreier wrote:
> > > >  > Also does ibv_dereg_mr() work when fatal error occurs ?
> > > > 
> > > > It will probably fail but you should try to destroy all your 
> > > > resources I guess.
> > > > 
> > > This is very good question. Application should be able to unpin 
> > > memory even if HCA is completely dead.
> > 
> > This is only safe after you reset the HCA, otherwise it might be 
> > writing over this memory.
> > 
> Right. Good point. So to recover memory after HCA failure 
> event we need to reset HCA and only after that unpin memory. 
> What current mthca driver does in case it cannot unregister 
> memory from HCA? Does it proceed to unpin it?

Sorry, also how to reset HCA in application ?

--CQ


> 
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> 			Gleb.
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