Re: [PATCH 05/13] PCI: Add ACS egress control vector accessor

[email protected] Sun, 02 Aug 2026 15:39:29 +0000
Newsgroups org.kernel.vger.linux-pci
Message-ID <[email protected]>
> From: Leon Romanovsky <[email protected]>
> 
> Whether ACS P2P Egress Control routes, redirects, or blocks a peer-to-peer
> request depends on the Egress Control Vector bit for the target port, not
> on the enable bit alone (PCIe r7.0, sec 6.12.3).
> 
> Provide a helper to read that bit for a peer Root or Switch Downstream
> Port. Report an unreadable or uncovered vector as an error rather than as
> a clear bit, so callers do not mistake it for permission to route
> directly.
> 
> Signed-off-by: Leon Romanovsky <[email protected]>

Sashiko has reviewed this patch and found no issues. It looks great!

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Sashiko AI review ยท https://sashiko.dev/#/patchset/[email protected]?part=5