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Groups > linux.kernel > #1525085
| From | Auger Eric <eric.auger@redhat.com> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | Re: [RFC v3 00/10] KVM PCIe/MSI passthrough on ARM/ARM64 and IOVA reserved regions |
| Date | 2016-11-18 09:40 +0100 |
| Message-ID | <sEMSd-4GA-15@gated-at.bofh.it> (permalink) |
| References | <sDLER-5lG-1@gated-at.bofh.it> <sEMSd-4GA-17@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
Hi Bharat, On 18/11/2016 06:34, Bharat Bhushan wrote: > Hi Eric, > > Have you sent out QEMU side patches based on this new approach? In case I missed please point me the patches? Upstream QEMU works fine for PCIe/MSI passthrough on ARM since mach virt address space does not collide with fixed MSI region. Thanks Eric > > 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 > > _______________________________________________ > linux-arm-kernel mailing list > linux-arm-kernel@lists.infradead.org > http://lists.infradead.org/mailman/listinfo/linux-arm-kernel >
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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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