RE: [PATCH v2 3/3] iommu/vt-d: Fix ineffective devTLB invalidation for subdevices

Hi Baolu, Well received, all comments accepted. thanks. Regards, Yi Liu > From: Lu Baolu > Sent: Wednesday, December 23, 2020 6:10 PM > > Hi Yi, > > On 2020/12/23 14:27, Liu Yi L wrote: > > iommu_flush_dev_iotlb() is called to invalidate caches on device. It only > > loops the devices which

Re: [PATCH v2 3/3] iommu/vt-d: Fix ineffective devTLB invalidation for subdevices

Hi Yi, On 2020/12/23 14:27, Liu Yi L wrote: iommu_flush_dev_iotlb() is called to invalidate caches on device. It only loops the devices which are full-attached to the domain. For sub-devices, this is ineffective. This results in invalid caching entries left on the device. Fix it by adding loop

[PATCH v2 3/3] iommu/vt-d: Fix ineffective devTLB invalidation for subdevices

iommu_flush_dev_iotlb() is called to invalidate caches on device. It only loops the devices which are full-attached to the domain. For sub-devices, this is ineffective. This results in invalid caching entries left on the device. Fix it by adding loop for subdevices as well. Also, the domain->