Re: [PATCH v1 1/5] PCI/P2PDMA: Don't enforce ACS check for functions of same device

2024-10-16 Thread Logan Gunthorpe
On 2024-10-15 23:29, Kasireddy, Vivek wrote: > I think it would make sense to limit the passing criteria for device > functions' > compatibility to Intel GPUs for now. These are the devices I am currently > testing that we know are P2P compatible. Would this be OK? Yes, this sounds good to me.

RE: [PATCH v1 1/5] PCI/P2PDMA: Don't enforce ACS check for functions of same device

2024-10-15 Thread Kasireddy, Vivek
Hi Logan, > > On 2024-10-11 20:40, Vivek Kasireddy wrote: > > Functions of the same PCI device (such as a PF and a VF) share the > > same bus and have a common root port and typically, the PF provisions > > resources for the VF. Therefore, they can be considered compatible > > as far as P2P acces

Re: [PATCH v1 1/5] PCI/P2PDMA: Don't enforce ACS check for functions of same device

2024-10-15 Thread Logan Gunthorpe
On 2024-10-11 20:40, Vivek Kasireddy wrote: > Functions of the same PCI device (such as a PF and a VF) share the > same bus and have a common root port and typically, the PF provisions > resources for the VF. Therefore, they can be considered compatible > as far as P2P access is considered. > >

[PATCH v1 1/5] PCI/P2PDMA: Don't enforce ACS check for functions of same device

2024-10-11 Thread Vivek Kasireddy
Functions of the same PCI device (such as a PF and a VF) share the same bus and have a common root port and typically, the PF provisions resources for the VF. Therefore, they can be considered compatible as far as P2P access is considered. Currently, although the distance (2) is correctly calculat