Re: [PATCH v4 10/18] PCI: Account for ACS egress control in isolation checks

Jason Gunthorpe <[email protected]>
Newsgroups org.kernel.vger.linux-doc,dev.linux.lists.iommu,org.kernel.vger.linux-kernel,org.kernel.vger.linux-pci
Message-ID <178761377056.3197084.2573998749847027711.b4-review@b4>
> pci_acs_enabled() treats P2P Request Redirect as effective whenever its
> control bit is set. PCIe r7.0, sec 6.12.3, table 6-11 lets an enabled
> Egress Control Vector override it: a clear vector bit routes the request
> directly.

This may well all be correct, but I'd prefer not to touch grouping in
this series working on p2pdma.. The grouping logic is already not
doing a good job with the spec and we can't change it because it
creates regression.

-- 
Jason
lmpx.com only provides a reader for public news (NNTP) servers. It is not affiliated with the servers or forums shown here and is not responsible for the content of articles, which is written by their respective authors.