> -Original Message-
> From: Joerg Roedel [mailto:j...@8bytes.org]
> Sent: Tuesday, February 05, 2013 6:36 PM
> To: Sethi Varun-B16395
> Cc: Stuart Yoder; iommu@lists.linux-foundation.org; linux-
> ker...@vger.kernel.org; Wood Scott-B07421
> Subject: Re: [PATCH 5/5] iommu: Add DOMAIN_ATTR
On Mon, 04 Feb 2013 13:28:04 -0700
Alex Williamson wrote:
> On Mon, 2013-02-04 at 10:36 -0800, Stephen Hemminger wrote:
> > > I think drivers/pci/search.c is identical between 3.7 and 3.8-rc1. Is
> > > this the first time you've turned on the IOMMU on that box?
> >
> > It exists in 3.7 and earl
On Mon, 04 Feb 2013 15:41:24 -0700
Alex Williamson wrote:
> +
> + if (pci_is_pcie(parent) &&
> + (pci_pcie_type(parent) == PCI_EXP_TYPE_ROOT_PORT ||
> + pci_pcie_type(parent) == PCI_EXP_TYPE_DOWNSTREAM)) {
> + pr_warn("WARNING: Your hardware is broken, device %s a
> I think drivers/pci/search.c is identical between 3.7 and 3.8-rc1. Is
> this the first time you've turned on the IOMMU on that box?
It exists in 3.7 and earlier kernels, just haven't turned on same config.
> It's the same warning as in this bugzilla:
> https://bugzilla.kernel.org/show_bug.cgi
On Tue, Feb 5, 2013 at 6:31 AM, Joerg Roedel wrote:
> Hi Shuah,
>
> On Fri, Feb 01, 2013 at 11:31:59AM -0700, Shuah Khan wrote:
>> Yes, 3.7 has the same window of opportunity for this race condition,
>> however I couldn't figure out why it doesn't happen on 3.7. On 3.7 the
>> window between amd_io
Hi Shuah,
On Fri, Feb 01, 2013 at 11:31:59AM -0700, Shuah Khan wrote:
> Yes, 3.7 has the same window of opportunity for this race condition,
> however I couldn't figure out why it doesn't happen on 3.7. On 3.7 the
> window between amd_iommu_init_hardware() and amd_iommu_init_dma_ops()
> might actu
On Mon, Feb 04, 2013 at 05:31:51PM -0600, Stuart Yoder wrote:
> On Mon, Feb 4, 2013 at 12:56 PM, Joerg Roedel wrote:
> > On Mon, Feb 04, 2013 at 12:10:51PM -0600, Stuart Yoder wrote:
> >> On Mon, Feb 4, 2013 at 7:18 AM, Joerg Roedel wrote:
> >> > +static inline int iommu_domain_window_enable(stru
On Mon, Feb 04, 2013 at 09:54:07PM +0100, Hiroshi Doyu wrote:
> Hiroshi Doyu wrote @ Mon, 04 Feb 2013 22:39:21 +0200 (EET):
>
> > > Upon reflection, that comment probably isn't correct, since the only way
> > > to know where each register range begins, relative to the register
> > > numbers that
On Tue, Feb 05, 2013 at 10:52:03AM +, Sethi Varun-B16395 wrote:
> DOMAIN_ATTR_PAMU_ENABLE is required to enable a particular DMA window.
> My point is about the domain geometry, which is incomplete in case of
> PAMU without the number of subwindows. Geometry parameters are used
> for initializi
DOMAIN_ATTR_PAMU_ENABLE is required to enable a particular DMA window. My point
is about the domain geometry, which is incomplete in case of PAMU without the
number of subwindows. Geometry parameters are used for initializing the PAMU
window settings. Individual subwindows can only be enabled, o
Joerg Roedel,
From: Joerg Roedel
Subject: Re: [PATCH v6 1/4] iommu/shmobile: Add iommu driver for Renesas IPMMU
modules
Date: Fri, 1 Feb 2013 14:54:57 +0100
> On Mon, Jan 21, 2013 at 07:54:26PM +0900, Hideki EIRAKU wrote:
>> This is the Renesas IPMMU driver and IOMMU API implementation.
>>
>>
Hi,
On Tue, Feb 05, 2013 at 09:14:40AM +, Sethi Varun-B16395 wrote:
> In case of PAMU, geometry would be meaningless without specifying the
> number of subwindows. If the API user specifies a geometry but fails
> to specify the number of required subwindows, we would assume a
> default (max su
Hi Stuart,
On Mon, Feb 04, 2013 at 09:37:20PM -0600, Stuart Yoder wrote:
> + DOMAIN_ATTR_ENABLE,
> + DOMAIN_ATTR_FSL_PAMUV1,
> Instead of advertising those constraints somehow, it seem easier just
> to advertise that this IOMMU is a PAMU v1. The attribute would be
> read only and woul
Hi Joerg,
In case of PAMU, geometry would be meaningless without specifying the number of
subwindows. If the API user specifies a geometry but fails to specify the
number of required subwindows, we would assume a default (max supported) value,
which may be incorrect. It's going to be really ugly
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