Re: [PATCH v6 0/3] PCIe Host request to reserve IOVA

[Srinath Mannam]

Hi Lorenzo,

Thanks a lot.

Regards,
Srinath.

On Fri, May 3, 2019 at 9:23 PM Lorenzo Pieralisi
<lorenzo.pieralisi@xxxxxxx> wrote:
>
> On Fri, May 03, 2019 at 07:35:31PM +0530, Srinath Mannam wrote:
> > This patch set will reserve IOVA addresses for DMA memory holes.
> >
> > The IPROC host controller allows only a few ranges of physical address
> > as inbound PCI addresses which are listed through dma-ranges DT property.
> > Added dma_ranges list field of PCI host bridge structure to hold these
> > allowed inbound address ranges in sorted order.
> >
> > Process this list and reserve IOVA addresses that are not present in its
> > resource entries (ie DMA memory holes) to prevent allocating IOVA
> > addresses that cannot be allocated as inbound addresses.
> >
> > This patch set is based on Linux-5.1-rc3.
> >
> > Changes from v5:
> >   - Addressed Robin Murphy, Lorenzo review comments.
> >     - Error handling in dma ranges list processing.
> >     - Used commit messages given by Lorenzo to all patches.
> >
> > Changes from v4:
> >   - Addressed Bjorn, Robin Murphy and Auger Eric review comments.
> >     - Commit message modification.
> >     - Change DMA_BIT_MASK to "~(dma_addr_t)0".
> >
> > Changes from v3:
> >   - Addressed Robin Murphy review comments.
> >     - pcie-iproc: parse dma-ranges and make sorted resource list.
> >     - dma-iommu: process list and reserve gaps between entries
> >
> > Changes from v2:
> >   - Patch set rebased to Linux-5.0-rc2
> >
> > Changes from v1:
> >   - Addressed Oza review comments.
> >
> > Srinath Mannam (3):
> >   PCI: Add dma_ranges window list
> >   iommu/dma: Reserve IOVA for PCIe inaccessible DMA address
> >   PCI: iproc: Add sorted dma ranges resource entries to host bridge
> >
> >  drivers/iommu/dma-iommu.c           | 35 ++++++++++++++++++++++++++---
> >  drivers/pci/controller/pcie-iproc.c | 44 ++++++++++++++++++++++++++++++++++++-
> >  drivers/pci/probe.c                 |  3 +++
> >  include/linux/pci.h                 |  1 +
> >  4 files changed, 79 insertions(+), 4 deletions(-)
>
> I have applied the series to pci/iova-dma-ranges, targeting v5.2,
> thanks.
>
> Lorenzo