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 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
