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

I have tested this series on NXP platform.

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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