Re: [PATCH v5 4/7] PCI/ATS: Add PRI support for PCIe VF devices

2019-08-12 Thread Bjorn Helgaas
On Thu, Aug 01, 2019 at 05:06:01PM -0700, sathyanarayanan.kuppusw...@linux.intel.com wrote: > From: Kuppuswamy Sathyanarayanan > > When IOMMU tries to enable Page Request Interface (PRI) for VF device > in iommu_enable_dev_iotlb(), it always fails because PRI support for > PCIe VF device is curr

Re: [PATCH v5 4/7] PCI/ATS: Add PRI support for PCIe VF devices

2019-08-12 Thread sathyanarayanan kuppuswamy
Hi, On 8/12/19 1:04 PM, Bjorn Helgaas wrote: On Thu, Aug 01, 2019 at 05:06:01PM -0700, sathyanarayanan.kuppusw...@linux.intel.com wrote: From: Kuppuswamy Sathyanarayanan When IOMMU tries to enable Page Request Interface (PRI) for VF device in iommu_enable_dev_iotlb(), it always fails because

Re: [PATCH v5 4/7] PCI/ATS: Add PRI support for PCIe VF devices

2019-08-12 Thread Bjorn Helgaas
On Thu, Aug 01, 2019 at 05:06:01PM -0700, sathyanarayanan.kuppusw...@linux.intel.com wrote: > From: Kuppuswamy Sathyanarayanan > > When IOMMU tries to enable Page Request Interface (PRI) for VF device > in iommu_enable_dev_iotlb(), it always fails because PRI support for > PCIe VF device is curr

[PATCH v5 4/7] PCI/ATS: Add PRI support for PCIe VF devices

2019-08-01 Thread sathyanarayanan . kuppuswamy
From: Kuppuswamy Sathyanarayanan When IOMMU tries to enable Page Request Interface (PRI) for VF device in iommu_enable_dev_iotlb(), it always fails because PRI support for PCIe VF device is currently broken. Current implementation expects the given PCIe device (PF & VF) to implement PRI capabilit