On 05/21/2012 10:59 AM, Alex Williamson wrote:
On Mon, 2012-05-21 at 09:31 -0400, Don Dutile wrote:
On 05/18/2012 10:47 PM, Alex Williamson wrote:
On Fri, 2012-05-18 at 19:00 -0400, Don Dutile wrote:
On 05/18/2012 06:02 PM, Alex Williamson wrote:
On Wed, 2012-05-16 at 09:29 -0400, Don Dutile
On Mon, 2012-05-21 at 09:31 -0400, Don Dutile wrote:
> On 05/18/2012 10:47 PM, Alex Williamson wrote:
> > On Fri, 2012-05-18 at 19:00 -0400, Don Dutile wrote:
> >> On 05/18/2012 06:02 PM, Alex Williamson wrote:
> >>> On Wed, 2012-05-16 at 09:29 -0400, Don Dutile wrote:
> On 05/15/2012 05:09 PM
On 05/18/2012 10:47 PM, Alex Williamson wrote:
On Fri, 2012-05-18 at 19:00 -0400, Don Dutile wrote:
On 05/18/2012 06:02 PM, Alex Williamson wrote:
On Wed, 2012-05-16 at 09:29 -0400, Don Dutile wrote:
On 05/15/2012 05:09 PM, Alex Williamson wrote:
On Tue, 2012-05-15 at 13:56 -0600, Bjorn Helga
On Fri, 2012-05-18 at 19:00 -0400, Don Dutile wrote:
> On 05/18/2012 06:02 PM, Alex Williamson wrote:
> > On Wed, 2012-05-16 at 09:29 -0400, Don Dutile wrote:
> >> On 05/15/2012 05:09 PM, Alex Williamson wrote:
> >>> On Tue, 2012-05-15 at 13:56 -0600, Bjorn Helgaas wrote:
> On Mon, May 14, 201
On 05/18/2012 06:02 PM, Alex Williamson wrote:
On Wed, 2012-05-16 at 09:29 -0400, Don Dutile wrote:
On 05/15/2012 05:09 PM, Alex Williamson wrote:
On Tue, 2012-05-15 at 13:56 -0600, Bjorn Helgaas wrote:
On Mon, May 14, 2012 at 4:49 PM, Alex Williamson
wrote:
On Mon, 2012-05-14 at 16:02 -06
On Wed, 2012-05-16 at 10:21 -0600, Alex Williamson wrote:
> On Wed, 2012-05-16 at 09:29 -0400, Don Dutile wrote:
> > On 05/15/2012 05:09 PM, Alex Williamson wrote:
> > > On Tue, 2012-05-15 at 13:56 -0600, Bjorn Helgaas wrote:
> > >> pci_acs_enabled(02:00.0) = 00:02.0 (acs_dev = 00:02.0, 02:00.0 has
On Wed, 2012-05-16 at 09:29 -0400, Don Dutile wrote:
> On 05/15/2012 05:09 PM, Alex Williamson wrote:
> > On Tue, 2012-05-15 at 13:56 -0600, Bjorn Helgaas wrote:
> >> On Mon, May 14, 2012 at 4:49 PM, Alex Williamson
> >> wrote:
> >>> On Mon, 2012-05-14 at 16:02 -0600, Bjorn Helgaas wrote:
>
On 05/15/2012 05:09 PM, Alex Williamson wrote:
On Tue, 2012-05-15 at 13:56 -0600, Bjorn Helgaas wrote:
On Mon, May 14, 2012 at 4:49 PM, Alex Williamson
wrote:
On Mon, 2012-05-14 at 16:02 -0600, Bjorn Helgaas wrote:
On Fri, May 11, 2012 at 4:56 PM, Alex Williamson
wrote:
In a PCIe environm
On Tue, 2012-05-15 at 13:56 -0600, Bjorn Helgaas wrote:
> On Mon, May 14, 2012 at 4:49 PM, Alex Williamson
> wrote:
> > On Mon, 2012-05-14 at 16:02 -0600, Bjorn Helgaas wrote:
> >> On Fri, May 11, 2012 at 4:56 PM, Alex Williamson
> >> wrote:
> >> > In a PCIe environment, transactions aren't alway
> I tried to work through some examples to develop some intuition about this:
Sorry, gmail inserted line breaks that ruined this picture. Here's a
URL for it:
http://www.asciiflow.com/#3736558963405980039
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On Mon, May 14, 2012 at 4:49 PM, Alex Williamson
wrote:
> On Mon, 2012-05-14 at 16:02 -0600, Bjorn Helgaas wrote:
>> On Fri, May 11, 2012 at 4:56 PM, Alex Williamson
>> wrote:
>> > In a PCIe environment, transactions aren't always required to
>> > reach the root bus before being re-routed. Peer-
On Mon, 2012-05-14 at 16:02 -0600, Bjorn Helgaas wrote:
> On Fri, May 11, 2012 at 4:56 PM, Alex Williamson
> wrote:
> > In a PCIe environment, transactions aren't always required to
> > reach the root bus before being re-routed. Peer-to-peer DMA
> > may actually not be seen by the IOMMU in these
On Fri, May 11, 2012 at 4:56 PM, Alex Williamson
wrote:
> In a PCIe environment, transactions aren't always required to
> reach the root bus before being re-routed. Peer-to-peer DMA
> may actually not be seen by the IOMMU in these cases. For
> IOMMU groups, we want to provide IOMMU drivers a way
In a PCIe environment, transactions aren't always required to
reach the root bus before being re-routed. Peer-to-peer DMA
may actually not be seen by the IOMMU in these cases. For
IOMMU groups, we want to provide IOMMU drivers a way to detect
these restrictions. Provided with a PCI device, pci_a
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