Re: [PATCH 07/13] PCI/P2PDMA: Derive peer-to-peer routing from ACS control bits
Logan Gunthorpe <[email protected]> Tue, 4 Aug 2026 15:55:10 -0600
| Newsgroups | gmane.linux.kernel,gmane.linux.kernel.pci,gmane.linux.documentation |
|---|---|
| Message-ID | <[email protected]> |
On 2026-08-02 09:09, Leon Romanovsky wrote: > From: Leon Romanovsky <[email protected]> > > The redirect test reports an upstream redirect for any ACS redirect or > egress control bit. PCIe r7.0, sec 6.12.3, table 6-11 ties the outcome to > the control bits and the target vector, and an enabled egress control bit > alone does not redirect. Compute the result from the control bits so the > vector can be honored next, using the host-bridge route while the peer > target is unknown. > > Signed-off-by: Leon Romanovsky <[email protected]> Ok, thanks, this is not the simplest thing to understand but I've followed through this and the next 3 patches and I think it makes sense to me. Reviewed-by: Logan Gunthorpe <[email protected]> Logan