linux-kernel - Re: [ofa-general] Re: [PATCH 00 of 33] Set of ipath patches for 2.6.22

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Message-ID: <461D6593.1050009@pathscale.com>
Date:	Wed, 11 Apr 2007 15:47:47 -0700
From:	Robert Walsh <rjwalsh@...hscale.com>
To:	Roland Dreier <rdreier@...co.com>
Cc:	Bryan O'Sullivan <bos@...hscale.com>,
	openib-general@...nfabrics.org, linux-kernel@...r.kernel.org
Subject: Re: [ofa-general] Re: [PATCH 00 of 33] Set of ipath patches for 2.6.22

Roland Dreier wrote:
>  > BTW: any idea how this ever got triggered?  The only way I can see is
>  > if you're either not using libipathverbs and libibverbs and you just
>  > create the CQ some other way, which seems unlikely.  Do you know how
>  > Jason triggered this bug?
> 
> Yes, it was because he was using 32-bit userspace and so it was
> impossible to libipathverbs to mmap the address the kernel driver was
> looking for.  So the mmap failed and the pending mmap never got taken
> off the list.

Oh, OK.  Got it.  That problem is on my list, too, along with the other 
pending_mmap-related cleanups you suggested.  Hopefully I'll have a 
patch finished tonight.
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