On 2022/3/29 12:54, Jason Wang wrote:
在 2022/3/28 下午4:45, Yi Liu 写道:
On 2022/3/21 13:54, Jason Wang wrote:
This patch introduce ECAP_PASID via "x-pasid-mode". Based on the
existing support for scalable mode, we need to implement the following
missing parts:
1) tag VTDAddressSpace with PASID and support IOMMU/DMA translation
with PASID
should it be tagging with bdf+pasid?
The problem is BDF is programmable by the guest. So we may end up
duplicated BDFs. That's why the code uses struct PCIBus.
how about the devfn? will it also change? taggiing addressspace with
BDF+PASID mostly suits the spec since the PASID table is per-bdf. If
bus number may change, using PCIBus is fine.
Regards,
Yi Liu
