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From: Muli Ben-Yehuda <muli@il.ibm.com>
To: Chandru <chandru@in.ibm.com>
Cc: Andrew Morton <akpm@linux-foundation.org>,
	linux-kernel@vger.kernel.org,
	Alexis Bruemmer <alexisb@us.ibm.com>
Subject: Re: [RFC] [Patch] calgary iommu: Use the first kernel's tce tables in kdump
Date: Tue, 15 Jul 2008 13:52:53 +0300	[thread overview]
Message-ID: <20080715105253.GB7245@il.ibm.com> (raw)
In-Reply-To: <200807151415.27845.chandru@in.ibm.com>

On Tue, Jul 15, 2008 at 02:15:27PM +0530, Chandru wrote:
> kdump kernel fails to boot with calgary iommu and aacraid driver on a x366 
> box. The ongoing dma's of aacraid from the first kernel continue to exist 
> until the driver is loaded in the kdump kernel. Calgary is initialized prior 
> to aacraid and creation of new tce tables causes wrong dma's to occur. Here 
> we try to get the tce tables of the first kernel in kdump kernel and use 
> them. While in the kdump kernel we do not allocate new tce tables but instead 
> read the base addres register contents of calgary iommu and use the tables 
> that the registers point to. With these changes the kdump kernel and hence 
> aacraid now boots normally.
> 
> Signed-off-by: Chandru Siddalingappa <chandru@in.ibm.com>

Acked-by: Muli Ben-Yehuda <muli@il.ibm.com>

Cheers,
Muli

  reply	other threads:[~2008-07-15 10:54 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2007-10-09 20:40 chandru
2007-10-09 21:06 ` Muli Ben-Yehuda
2007-10-10  5:30   ` Vivek Goyal
2007-10-14  5:41     ` Muli Ben-Yehuda
2007-10-15  6:29       ` Vivek Goyal
2007-12-24  5:15         ` Chandru
2008-03-10 13:20           ` Chandru
2008-03-10 16:09             ` Andrew Morton
2008-06-21 12:11               ` Chandru
2008-06-21 12:25                 ` Mark Salyzyn
2008-06-23 19:29                 ` Muli Ben-Yehuda
2008-07-15  8:45                   ` Chandru
2008-07-15 10:52                     ` Muli Ben-Yehuda [this message]
2008-07-17 23:14                     ` Andrew Morton
2008-07-20  9:42                       ` Muli Ben-Yehuda
2008-03-11 13:29             ` Vivek Goyal
2008-03-12  5:08               ` Chandru
2008-03-12  9:58                 ` Muli Ben-Yehuda
2008-03-12 18:08                   ` Vivek Goyal
2008-03-13 15:49                     ` Muli Ben-Yehuda
2007-10-10  5:37 ` Vivek Goyal

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