From: Dave Hansen <dave@linux.vnet.ibm.com>
To: Stefan Roscher <ossrosch@linux.vnet.ibm.com>
Cc: LinuxPPC-Dev <linuxppc-dev@ozlabs.org>,
LKML <linux-kernel@vger.kernel.org>,
general@lists.openfabrics.org
Subject: Re: [PATCH]IB/ehca:reject dynamic memory add/remove
Date: Mon, 13 Oct 2008 10:09:26 -0700 [thread overview]
Message-ID: <1223917766.29877.17.camel@nimitz> (raw)
In-Reply-To: <200810131310.34413.ossrosch@linux.vnet.ibm.com>
On Mon, 2008-10-13 at 13:10 +0200, Stefan Roscher wrote:
> Since the ehca device driver does not support dynamic memory add and remove
> operations, the driver must explicitly reject such requests in order to prevent
> unpredictable behaviors related to memory regions already occupied and being
> used by InfiniBand applications.
> The solution is to add a memory notifier to the ehca device driver and if a request
> for dynamic memory add or remove comes in, ehca will always reject it.
Why doesn't the driver support it?
This seems like an awfully extreme action to take. Do you have plans to
support this in the driver soon?
-- Dave
next prev parent reply other threads:[~2008-10-13 17:12 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-10-13 11:10 [PATCH]IB/ehca:reject dynamic memory add/remove Stefan Roscher
2008-10-13 17:09 ` Dave Hansen [this message]
[not found] ` <200810141423.48111.stefan.roscher@vnet.de.ibm.com>
2008-10-14 12:29 ` Dave Hansen
2008-10-14 15:13 ` Dave Hansen
2008-10-22 22:54 ` Roland Dreier
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