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@xxxxxxxxxxxxxxxxxxxxxxxxxx [mailto:iommu- > bounces@xxxxxxxxxxxxxxxxxxxxxxxxxx] On Behalf Of Eric Auger > Sent: Tuesday, November 15, 2016 6:39 PM > To: eric.auger@xxxxxxxxxx; eric.auger.pro@xxxxxxxxx; > christoffer.dall@xxxxxxxxxx; marc.zyngier@xxxxxxx; > robin.murphy@xxxxxxx; alex.williamson@xxxxxxxxxx; > will.deacon@xxxxxxx; joro@xxxxxxxxxx; tglx@xxxxxxxxxxxxx; > jason@xxxxxxxxxxxxxx; linux-arm-kernel@xxxxxxxxxxxxxxxxxxx > Cc: drjones@xxxxxxxxxx; kvm@xxxxxxxxxxxxxxx; punit.agrawal@xxxxxxx; > linux-kernel@xxxxxxxxxxxxxxx; iommu@xxxxxxxxxxxxxxxxxxxxxxxxxx; > pranav.sawargaonkar@xxxxxxxxx > 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@xxxxxxxxxxxxxxxxxxxxxxxxxx > https://lists.linuxfoundation.org/mailman/listinfo/iommu -- To unsubscribe from this list: send the line "unsubscribe kvm" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
