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From: Chris Wright <chrisw@sous-sol.org>
To: Neil Horman <nhorman@tuxdriver.com>
Cc: Joerg Roedel <joro@8bytes.org>, Neil Horman <nhorman@redhat.com>,
	kexec@lists.infradead.org, linux-kernel@vger.kernel.org,
	hbabu@us.ibm.com, iommu@lists.linux-foundation.org,
	"Eric W. Biederman" <ebiederm@xmission.com>,
	Vivek Goyal <vgoyal@redhat.com>
Subject: Re: [PATCH] amd iommu: force flush of iommu prior during shutdown
Date: Thu, 1 Apr 2010 17:30:34 -0700	[thread overview]
Message-ID: <20100402003034.GX29241@sequoia.sous-sol.org> (raw)
In-Reply-To: <20100402000012.GA8930@hmsreliant.think-freely.org>

* Neil Horman (nhorman@tuxdriver.com) wrote:
> On Thu, Apr 01, 2010 at 10:14:34PM +0200, Joerg Roedel wrote:
> > On Thu, Apr 01, 2010 at 01:11:49PM -0400, Neil Horman wrote:
> > > On Thu, Apr 01, 2010 at 05:56:43PM +0200, Joerg Roedel wrote:
> > 
> > > > The possible fix will be to enable the hardware earlier in the
> > > > initialization path.
> > > > 
> > > That sounds like a reasonable theory, I'll try hack something together
> > > shortly.
> > 
> > Great. So the problem might be already fixed when I am back in the
> > office ;-)
> > 
> Don't hold your breath, but I'll try my best :)

The problem we had before was a combo of not clearing PDE and not having
the command buffer set up properly.  Now we have basically the same
problem.  The attach is running too early, so the invalidate commands
are falling on deaf ears.

thanks,
-chris

  reply	other threads:[~2010-04-02  0:31 UTC|newest]

Thread overview: 41+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-03-31 15:24 Neil Horman
2010-03-31 15:54 ` Vivek Goyal
2010-03-31 18:28   ` Neil Horman
2010-03-31 18:57     ` Eric W. Biederman
2010-03-31 19:18       ` Neil Horman
2010-03-31 19:51         ` Eric W. Biederman
2010-03-31 20:27           ` Neil Horman
2010-04-01  4:04             ` Eric W. Biederman
2010-04-01 12:49               ` Neil Horman
2010-04-01 14:29             ` Joerg Roedel
2010-04-01 14:47               ` Neil Horman
2010-04-01 15:56                 ` Joerg Roedel
2010-04-01 17:11                   ` Neil Horman
2010-04-01 20:14                     ` Joerg Roedel
2010-04-02  0:00                       ` Neil Horman
2010-04-02  0:30                         ` Chris Wright [this message]
2010-04-02  1:23                           ` [PATCH 1/2] x86/amd-iommu: enable iommu before attaching devices Chris Wright
2010-04-02  1:31                             ` [PATCH 2/2] x86/amd-iommu: warn when issuing command to uninitiailed cmd buffer Chris Wright
2010-04-02  1:35                             ` [PATCH 1/2] x86/amd-iommu: enable iommu before attaching devices Neil Horman
2010-04-02  1:38                               ` Chris Wright
2010-04-02  9:11                             ` Joerg Roedel
2010-04-02 23:59                               ` Chris Wright
2010-04-02 15:59                             ` Vivek Goyal
2010-04-02 22:38                               ` Chris Wright
2010-04-02 22:55                                 ` Eric W. Biederman
2010-04-02 23:57                                   ` Chris Wright
2010-04-03 17:38                               ` Joerg Roedel
2010-04-05 14:17                                 ` Vivek Goyal
2010-04-05 14:32                                   ` Joerg Roedel
2010-04-05 15:34                             ` Neil Horman
2010-03-31 18:43   ` [PATCH] amd iommu: force flush of iommu prior during shutdown Eric W. Biederman
2010-03-31 21:25 ` Chris Wright
2010-04-01  1:13   ` Neil Horman
2010-04-01  1:39     ` Chris Wright
2010-04-01  2:24     ` Vivek Goyal
2010-04-01 12:53       ` Neil Horman
2010-04-01 15:02         ` Vivek Goyal
2010-04-01 15:13           ` Neil Horman
2010-04-01  2:44   ` Vivek Goyal
2010-04-01  7:10     ` Chris Wright
2010-04-01 12:56       ` Neil Horman

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