linux-kernel - RE: [ofa-general] Re: [ewg] Re: [PATCH] IB/ehca: Serialize HCA-related hCalls on POWER5

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Message-ID: <OFD36374CC.9307FC29-ONC12573B0.00763BCF-C12573B0.0076A3D3@de.ibm.com>
Date:	Thu, 13 Dec 2007 22:35:52 +0100
From:	Joachim Fenkes <FENKES@...ibm.com>
To:	"Caitlin Bestler" <Caitlin.Bestler@...erion.com>
Cc:	"Arnd Bergmann" <arnd@...db.de>,
	"OF-General" <general@...ts.openfabrics.org>,
	"LKML" <linux-kernel@...r.kernel.org>, linuxppc-dev@...abs.org,
	"Or Gerlitz" <ogerlitz@...taire.com>,
	"Roland Dreier" <rdreier@...co.com>,
	Stefan Roscher <stefan.roscher@...ibm.com>
Subject: RE: [ofa-general] Re: [ewg] Re: [PATCH] IB/ehca: Serialize HCA-related
 hCalls on POWER5

"Caitlin Bestler" <Caitlin.Bestler@...erion.com> wrote on 13.12.2007 
22:08:34:

> To clarify, an FMR Work Request is simply posted to the SendQ like
> any other Work Request (of course the QP has to be privileged, or
> it will complete in error). An SQ Post should never block.

This would require hardware support, wouldn't it? eHCA2 doesn't have this 
kind of support, so FMR WRs are not an option here.

J.
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