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Groups > linux.kernel > #1522654
| From | Eric Auger <eric.auger@redhat.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions |
| Date | 2016-11-15 14:10 +0100 |
| Message-ID | <sDLER-5lG-1@gated-at.bofh.it> (permalink) |
| Organization | linux.* mail to news gateway |
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
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[RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:10 +0100 [RFC v3 02/10] iommu: Rename iommu_dm_regions into iommu_resv_regions Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:10 +0100 [RFC v3 01/10] iommu/dma: Allow MSI-only cookies Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:10 +0100 [RFC v3 05/10] iommu: Do not map reserved regions Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:20 +0100 [RFC v3 08/10] iommu/vt-d: Implement reserved region get/put callbacks Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:20 +0100 [RFC v3 10/10] vfio/type1: Get MSI cookie Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:20 +0100 [RFC v3 09/10] iommu/arm-smmu: Implement reserved region get/put callbacks Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:20 +0100 [RFC v3 03/10] iommu: Add new reserved IOMMU attributes Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:20 +0100 [RFC v3 06/10] iommu: iommu_get_group_resv_regions Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:20 +0100 [RFC v3 07/10] iommu: Implement reserved_regions iommu-group sysfs file Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:20 +0100 [RFC v3 04/10] iommu: iommu_alloc_resv_region Eric Auger <eric.auger@redhat.com> - 2016-11-15 14:20 +0100 Re: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions Auger Eric <eric.auger@redhat.com> - 2016-11-18 09:40 +0100 RE: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions Bharat Bhushan <bharat.bhushan@nxp.com> - 2016-11-18 11:10 +0100
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