lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  linux-cve-announce  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]
Message-Id: <20231214063717.992-1-mattc@purestorage.com>
Date:   Wed, 13 Dec 2023 23:37:17 -0700
From:   Matthew W Carlis <mattc@...estorage.com>
To:     helgaas@...nel.org
Cc:     bhelgaas@...gle.com, linux-kernel@...r.kernel.org,
        linux-pci@...r.kernel.org, mika.westerberg@...ux.intel.com,
        sathyanarayanan.kuppuswamy@...ux.intel.com
Subject: [PATCH v3] PCI/portdrv: Allow AER service only for Root Ports & RCECs

Hello Any Interested

Recently found that this patch had the affect of requiring us to set
pcie_ports_dpc_native in order to use the kernel DPC driver with PCIe switch
downstream ports. The kernel check for the DPC capability in portdrv.c has;
if pci_aer_available() and (dpc-native or using AER port service driver on
the device). I wonder if we couldn't do away with the requirement of the
AER service being used on the port if pci_aer_available() & host->native_aer
don't lie. I'm still trying to decide exactly what the condition ought to
look like, but it might draw from the AER service check above it. For example:

        if (pci_find_ext_capability(dev, PCI_EXT_CAP_ID_DPC) &&
-           pci_aer_available() &&
-           (pcie_ports_dpc_native || (services & PCIE_PORT_SERVICE_AER)))
+           dev->aer_cap && pci_aer_available() &&
+           (pcie_ports_dpc_native || host->native_aer))
                services |= PCIE_PORT_SERVICE_DPC;

Thanks,
-Matt


Powered by blists - more mailing lists

Powered by Openwall GNU/*/Linux Powered by OpenVZ