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    SubjectRe: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions
    Hi Eric,

    in you repo "https://github.com/eauger/linux/tree/v4.9-rc5-reserved-rfc-v3"
    there is 11th patch "pci: Enable overrides for missing ACS capabilities"
    is this patch part of some other series?

    thanks
    Ganapat

    On Wed, Nov 30, 2016 at 3:19 PM, Auger Eric <eric.auger@redhat.com> wrote:
    > Hi,
    >
    > On 15/11/2016 14:09, Eric Auger wrote:
    >> Following LPC discussions, we now report reserved regions through
    >> iommu-group sysfs reserved_regions attribute file.
    >>
    >> Reserved regions are populated through the IOMMU get_resv_region callback
    >> (former get_dm_regions), now implemented by amd-iommu, intel-iommu and
    >> arm-smmu.
    >>
    >> The intel-iommu reports the [FEE0_0000h - FEF0_000h] MSI window as an
    >> IOMMU_RESV_NOMAP reserved region.
    >>
    >> arm-smmu reports the MSI window (arbitrarily located at 0x8000000 and
    >> 1MB large) and the PCI host bridge windows.
    >>
    >> The series integrates a not officially posted patch from Robin:
    >> "iommu/dma: Allow MSI-only cookies".
    >>
    >> This series currently does not address IRQ safety assessment.
    >
    > I will respin this series taking into account Joerg's comment. Does
    > anyone have additional comments or want to put forward some conceptual
    > issues with the current direction and with this implementation?
    >
    > As for the IRQ safety assessment, in a first step I would propose to
    > remove the IOMMU_CAP_INTR_REMAP from arm-smmus and consider the
    > assignment as unsafe. Any objection?
    >
    > Thanks
    >
    > Eric
    >
    >
    >> Best Regards
    >>
    >> Eric
    >>
    >> Git: complete series available at
    >> https://github.com/eauger/linux/tree/v4.9-rc5-reserved-rfc-v3
    >>
    >> History:
    >> RFC v2 -> v3:
    >> - switch to an iommu-group sysfs API
    >> - use new dummy allocator provided by Robin
    >> - dummy allocator initialized by vfio-iommu-type1 after enumerating
    >> the reserved regions
    >> - at the moment ARM MSI base address/size is left unchanged compared
    >> to v2
    >> - we currently report reserved regions and not usable IOVA regions as
    >> requested by Alex
    >>
    >> RFC v1 -> v2:
    >> - fix intel_add_reserved_regions
    >> - add mutex lock/unlock in vfio_iommu_type1
    >>
    >>
    >> Eric Auger (10):
    >> iommu/dma: Allow MSI-only cookies
    >> iommu: Rename iommu_dm_regions into iommu_resv_regions
    >> iommu: Add new reserved IOMMU attributes
    >> iommu: iommu_alloc_resv_region
    >> iommu: Do not map reserved regions
    >> iommu: iommu_get_group_resv_regions
    >> iommu: Implement reserved_regions iommu-group sysfs file
    >> iommu/vt-d: Implement reserved region get/put callbacks
    >> iommu/arm-smmu: Implement reserved region get/put callbacks
    >> vfio/type1: Get MSI cookie
    >>
    >> drivers/iommu/amd_iommu.c | 20 +++---
    >> drivers/iommu/arm-smmu.c | 52 +++++++++++++++
    >> drivers/iommu/dma-iommu.c | 116 ++++++++++++++++++++++++++-------
    >> drivers/iommu/intel-iommu.c | 50 ++++++++++----
    >> drivers/iommu/iommu.c | 141 ++++++++++++++++++++++++++++++++++++----
    >> drivers/vfio/vfio_iommu_type1.c | 26 ++++++++
    >> include/linux/dma-iommu.h | 7 ++
    >> include/linux/iommu.h | 49 ++++++++++----
    >> 8 files changed, 391 insertions(+), 70 deletions(-)
    >>
    >
    > _______________________________________________
    > linux-arm-kernel mailing list
    > linux-arm-kernel@lists.infradead.org
    > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel

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