linux-kernel - Re: [PATCH 2/5] ehca: Generate event when SRQ limit reached

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Message-Id: <200707301703.00111.hnguyen@linux.vnet.ibm.com>
Date:	Mon, 30 Jul 2007 17:02:59 +0200
From:	Hoang-Nam Nguyen <hnguyen@...ux.vnet.ibm.com>
To:	Roland Dreier <rdreier@...co.com>
Cc:	linux-kernel@...r.kernel.org, linuxppc-dev@...abs.org,
	openib-general@...nib.org, raisch@...ibm.com,
	stefan.roscher@...ibm.com, fenkes@...ibm.com
Subject: Re: [PATCH 2/5] ehca: Generate event when SRQ limit reached

Hi,
> BTW, does your SRQ-capable hardware support generating the "last WQE
> reached" event?  There's not any reliable way to avoid problems when
> destroying QPs attached to an SRQ without it, and the IB spec requires
> CAs that support SRQs to generate it (o11-5.2.5 in chapter 11 of vol 1).
> 
> I don't see any code in ehca to generate the event, and IPoIB CM at
> least will be very unhappy when using SRQs if the event is not
> generated.
Thanks for this good catch. We're investigating how to implement this.
Will keep you updated.
Regards
Nam

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