On Wed, Nov 30, 2016 at 3:44 PM, Auger Eric <eric.auger@xxxxxxxxxx> wrote: > Hi Ganapat, > > On 30/11/2016 11:04, Ganapatrao Kulkarni wrote: >> 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? > > Actually this is a very old patch from Alex aimed at working around lack > of PCIe ACS support: https://lkml.org/lkml/2013/5/30/513 > i have tried this patchset on thunderx-83xx for vfio and it works for me! i was wondering is this patch required? i guess not. please cc me when you respin this patchset. thanks Ganapat > Thanks > > Eric >> >> thanks >> Ganapat >> >> On Wed, Nov 30, 2016 at 3:19 PM, Auger Eric <eric.auger@xxxxxxxxxx> 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@xxxxxxxxxxxxxxxxxxx >>> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel -- 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
