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

    Have you sent out QEMU side patches based on this new approach? In case I missed please point me the patches?

    Thanks
    -Bharat

    > -----Original Message-----
    > From: iommu-bounces@lists.linux-foundation.org [mailto:iommu-
    > bounces@lists.linux-foundation.org] On Behalf Of Eric Auger
    > Sent: Tuesday, November 15, 2016 6:39 PM
    > To: eric.auger@redhat.com; eric.auger.pro@gmail.com;
    > christoffer.dall@linaro.org; marc.zyngier@arm.com;
    > robin.murphy@arm.com; alex.williamson@redhat.com;
    > will.deacon@arm.com; joro@8bytes.org; tglx@linutronix.de;
    > jason@lakedaemon.net; linux-arm-kernel@lists.infradead.org
    > Cc: drjones@redhat.com; kvm@vger.kernel.org; punit.agrawal@arm.com;
    > linux-kernel@vger.kernel.org; iommu@lists.linux-foundation.org;
    > pranav.sawargaonkar@gmail.com
    > Subject: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and
    > IOVA reserved regions
    >
    > 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.
    >
    > 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(-)
    >
    > --
    > 1.9.1
    >
    > _______________________________________________
    > iommu mailing list
    > iommu@lists.linux-foundation.org
    > https://lists.linuxfoundation.org/mailman/listinfo/iommu

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