Hi Gerald,
On Fri, Apr 28, 2017 at 08:06:12PM +0200, Gerald Schaefer wrote:
> On Fri, 28 Apr 2017 16:55:13 +0200
> Joerg Roedel wrote:
> Also, IIRC, add_device will get called before attach_dev. Currently we
> allow to attach more than one device (apparently from different buses) to
> one domain
On Fri, Apr 28, 2017 at 05:25:20PM +0200, Sebastian Ott wrote:
> On Fri, 28 Apr 2017, Joerg Roedel wrote:
> > That sounds special :) So will every function of a single device end up
> > as a seperate device on a seperate root-bus?
>
> Yes. That's true even for multi-function and SRIOV.
Okay, so i
On Fri, 28 Apr 2017 16:55:13 +0200
Joerg Roedel wrote:
> > I am however a bit confused now, about how we would have allowed group
> > sharing with the current s390 IOMMU code, or IOW in which scenario would
> > iommu_group_get() in the add_device callback find a shareable iommu-group?
>
> The
On Fri, 28 Apr 2017, Joerg Roedel wrote:
> On Fri, Apr 28, 2017 at 02:46:34PM +0200, Gerald Schaefer wrote:
> > On Thu, 27 Apr 2017 23:03:25 +0200
> > Joerg Roedel wrote:
> >
> > > > Well, there is a separate zpci_dev for each pci_dev on s390,
> > > > and each of those has its own separate dma-ta
Hi Gerald,
On Fri, Apr 28, 2017 at 02:46:34PM +0200, Gerald Schaefer wrote:
> On Thu, 27 Apr 2017 23:03:25 +0200
> Joerg Roedel wrote:
>
> > > Well, there is a separate zpci_dev for each pci_dev on s390,
> > > and each of those has its own separate dma-table (thus not shared).
> >
> > Is that
Hi Joerg,
I guess we are a bit special on s390 (again), see below. Sebastian is more
familiar with the base s390 PCI code, he may correct me if I'm wrong.
On Thu, 27 Apr 2017 23:03:25 +0200
Joerg Roedel wrote:
> > Well, there is a separate zpci_dev for each pci_dev on s390,
> > and each of thos
Hi Gerald,
thanks for your reply. I have some more questions, please see below.
On Thu, Apr 27, 2017 at 08:10:18PM +0200, Gerald Schaefer wrote:
> Well, there is a separate zpci_dev for each pci_dev on s390,
> and each of those has its own separate dma-table (thus not shared).
Is that true for
On Thu, 27 Apr 2017 17:28:23 +0200
Joerg Roedel wrote:
> Hey,
>
> here are two patches for the s390 PCI and IOMMU code. It is
> based on the assumption that every pci_dev that points to
> the same zpci_dev shares a single dma-table (and thus a
> single address space).
Well, there is a separate
Hey,
here are two patches for the s390 PCI and IOMMU code. It is
based on the assumption that every pci_dev that points to
the same zpci_dev shares a single dma-table (and thus a
single address space).
If this assupmtion is true (as it looks to me from reading
the code) then the iommu-group setup
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