Re: [PATCH V3] PCI: Extend ACS configurability

From: Jason Gunthorpe
Date: Thu Jun 13 2024 - 19:36:37 EST


On Thu, Jun 13, 2024 at 05:05:20PM -0500, Bjorn Helgaas wrote:

> It's unfortunate that this requires so much expert knowledge to use,
> but I guess we don't really have a good alternative. The only way I
> can think of to help would be some kind of white paper or examples in
> Documentation/PCI/.

So far I am seeing the system supplier supply the appropriate
instructions.. It is already this way for set_pci, and yes, it is a
huge PITA.

At one point Steven Bates was talking about some ACPI tables to give
the OS more information but I don't think that went anywhere..

Jason