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Groups > linux.kernel > #1533183
| From | Ganapatrao Kulkarni <gpkulkarni@gmail.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions |
| Date | 2016-11-30 11:10 +0100 |
| Message-ID | <sJ9ZU-4JS-33@gated-at.bofh.it> (permalink) |
| References | <sDLER-5lG-1@gated-at.bofh.it> <sJ9Qe-4q9-15@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
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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Re: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions Auger Eric <eric.auger@redhat.com> - 2016-11-30 11:00 +0100
Re: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions Ganapatrao Kulkarni <gpkulkarni@gmail.com> - 2016-11-30 11:10 +0100
Re: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions Auger Eric <eric.auger@redhat.com> - 2016-11-30 11:20 +0100
Re: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions Ganapatrao Kulkarni <gpkulkarni@gmail.com> - 2016-11-30 12:00 +0100
Re: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions Robin Murphy <robin.murphy@arm.com> - 2016-11-30 15:00 +0100
Re: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions Will Deacon <will.deacon@arm.com> - 2016-11-30 11:40 +0100
Re: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions Auger Eric <eric.auger@redhat.com> - 2016-11-30 15:10 +0100
Re: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions Robin Murphy <robin.murphy@arm.com> - 2016-11-30 15:50 +0100
Re: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions Shanker Donthineni <shankerd@codeaurora.org> - 2016-12-07 20:00 +0100
Re: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions Auger Eric <eric.auger@redhat.com> - 2016-12-08 08:40 +0100
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